From e5f6cad039bc55ee965ae780b586b28a284e8bfc Mon Sep 17 00:00:00 2001
From: "Serik.Uvaissov" <Uvaissov@gmail.com>
Date: Fri, 10 Jul 2020 22:21:48 +0600
Subject: [PATCH] m4bank test-app inited

---
 android/app/build.gradle                      |  75 +-
 android/app/src/main/AndroidManifest.xml      |   3 +
 .../src/main/assets/sounds/card_prompt.aac    | Bin 0 -> 3438 bytes
 .../app/src/main/assets/sounds/card_read.wav  | Bin 0 -> 23416 bytes
 android/app/src/main/assets/sounds/error.wav  | Bin 0 -> 63128 bytes
 .../bank/ActivationCallbackHandlerImpl.java   |  65 ++
 .../AlipayPaymentCallbackHandlerImpl.java     | 175 ++++
 .../AuthorizationCallbackHandlerImpl.java     |  42 +
 .../bank/CardPaymentCallbackHandlerImpl.java  | 465 ++++++++++
 .../bank/CardReadingCallbackHandlerImpl.java  | 217 +++++
 .../bank/CardRefundCallbackHandlerImpl.java   | 336 ++++++++
 .../bank/CashPaymentCallbackHandlerImpl.java  | 187 ++++
 .../CheckConnectionCallbackHandlerImpl.java   |  24 +
 .../bank/CloseDayCallbackHandlerImpl.java     |  52 ++
 .../bank/CustomApplication.java               |  21 +
 .../bank/CustomSSLSocketFactory.java          |  81 ++
 .../bank/CustomTrustManager.java              |  40 +
 .../bank/DataCreatorUtils.java                | 144 ++++
 .../EasyAlipayRefundCallbackHandlerImpl.java  | 152 ++++
 .../EasyCardReversalCallbackHandlerImpl.java  | 363 ++++++++
 .../EasyCashRefundCallbackHandlerImpl.java    | 153 ++++
 .../EasyEcomRefundCallbackHandlerImpl.java    | 157 ++++
 .../bank/EasyReversalCallbackHandlerImpl.java | 177 ++++
 .../bank/EcomPaymentCallbackHandlerImpl.java  | 174 ++++
 .../bank/GetLicenseCallbackHandlerImpl.java   |  34 +
 .../GetMerchantUsersCallbackHandlerImpl.java  |  38 +
 .../GetSerialNumberCallbackHandlerImpl.java   | 103 +++
 ...TransactionDetailsCallbackHandlerImpl.java |  84 ++
 ...ctionListForRefundCallbackHandlerImpl.java |  62 ++
 .../LoadTerminalKeysCallbackHandlerImpl.java  | 133 +++
 .../bank/LogOutCallbackHandlerImpl.java       |  29 +
 .../bank/M4BankActivity.java                  | 814 ++++++++++++++++++
 .../bank/PrintingCallbackHandlerImpl.java     |  77 ++
 .../ReconciliationPrinterDataBuilder.java     |  73 ++
 .../ResendReceiptCallbackHandlerImpl.java     |  64 ++
 .../bank/ReversalCallbackHandlerImpl.java     | 154 ++++
 ...rtCurrentOperationCallbackHandlerImpl.java | 309 +++++++
 .../bank/ScanBarCodeCallbackHandlerImpl.java  |  72 ++
 ...endRegisterRequestCallbackHandlerImpl.java |  24 +
 .../SessionExpiringCallbackHandlerImpl.java   |  11 +
 .../bank/TerminalKeyTypeMpos.java             |   5 +
 .../bank/XReportCallbackHandlerImpl.java      |  72 ++
 .../builders/SslConfigurationBuilder.java     |  50 ++
 .../bank/gui/CustomKeyBoardDilalog.java       | 129 +++
 .../bank/gui/SelectDialogCallback.java        |  10 +
 .../bank/gui/SelectElementDialog.java         |  65 ++
 .../bank/managing/PreferencesManager.java     |  37 +
 .../bank/permissions/PermissionsManager.java  |  11 +
 .../permissions/PermissionsManagerImpl.java   |  65 ++
 .../aman_kassa_flutter/MainActivity.kt        |   5 +-
 .../app/src/main/res/layout/activity_main.xml | 476 ++++++++++
 .../main/res/layout/custom_dialog_list.xml    |  30 +
 .../app/src/main/res/layout/layout_pin.xml    | 138 +++
 android/app/src/main/res/layout/list_item.xml |  14 +
 android/app/src/main/res/values/colors.xml    |   6 +
 android/app/src/main/res/values/dimens.xml    |   5 +
 android/app/src/main/res/values/strings.xml   | 105 ++-
 android/build.gradle                          | 100 +++
 lib/views/login/login_view.dart               |  50 +-
 59 files changed, 6503 insertions(+), 54 deletions(-)
 create mode 100644 android/app/src/main/assets/sounds/card_prompt.aac
 create mode 100644 android/app/src/main/assets/sounds/card_read.wav
 create mode 100644 android/app/src/main/assets/sounds/error.wav
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/ActivationCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/AlipayPaymentCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/AuthorizationCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/CardPaymentCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/CardReadingCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/CardRefundCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/CashPaymentCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/CheckConnectionCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/CloseDayCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/CustomApplication.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/CustomSSLSocketFactory.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/CustomTrustManager.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/DataCreatorUtils.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyAlipayRefundCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyCardReversalCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyCashRefundCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyEcomRefundCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyReversalCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/EcomPaymentCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetLicenseCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetMerchantUsersCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetSerialNumberCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetTransactionDetailsCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetTransactionListForRefundCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/LoadTerminalKeysCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/LogOutCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/M4BankActivity.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/PrintingCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/ReconciliationPrinterDataBuilder.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/ResendReceiptCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/ReversalCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/RevertCurrentOperationCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/ScanBarCodeCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/SendRegisterRequestCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/SessionExpiringCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/TerminalKeyTypeMpos.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/XReportCallbackHandlerImpl.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/builders/SslConfigurationBuilder.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/gui/CustomKeyBoardDilalog.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/gui/SelectDialogCallback.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/gui/SelectElementDialog.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/managing/PreferencesManager.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/permissions/PermissionsManager.java
 create mode 100644 android/app/src/main/java/com/example/aman_kassa_flutter/bank/permissions/PermissionsManagerImpl.java
 create mode 100644 android/app/src/main/res/layout/activity_main.xml
 create mode 100644 android/app/src/main/res/layout/custom_dialog_list.xml
 create mode 100644 android/app/src/main/res/layout/layout_pin.xml
 create mode 100644 android/app/src/main/res/layout/list_item.xml
 create mode 100644 android/app/src/main/res/values/colors.xml
 create mode 100644 android/app/src/main/res/values/dimens.xml

diff --git a/android/app/build.gradle b/android/app/build.gradle
index 4b3c5e0..6513ac1 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -46,7 +46,7 @@ android {
 
     defaultConfig {
         applicationId "com.example.aman_kassa_flutter"
-        minSdkVersion 18
+        minSdkVersion 21
         targetSdkVersion 28
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
@@ -80,38 +80,49 @@ dependencies {
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test:runner:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
-    //m4bank dependencies
-    //implementation (group: 'm4bank', name: 'zlibrary', version: '2093', ext: 'aar')
-    implementation("m4bank:zlibrary:2093@aar")
-    implementation (group: 'm4bank', name: 'cardreaderlib', version: '725')
-    implementation (group: 'm4bank', name: 'connectionreaders', version: '725')
-    //implementation deps.okhttp.core
-    //implementation deps.okhttp.logger
-    implementation("com.squareup.okhttp3:okhttp:4.7.2")
-    implementation("com.squareup.okhttp3:logging-interceptor:4.7.2")
 
-    //implementation deps.retrofit.core
-    //implementation deps.retrofit.converterGson
-    //implementation deps.retrofit.rxjava2Adapter
-    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
-    //implementation deps.rx.core
-    //implementation deps.rx.android
-    //implementation deps.logback.core
-    //implementation(deps.logback.classic) {
-    //    exclude group: 'com.google.android', module: 'android'
-    //}
-    implementation 'ch.qos.logback:logback-core:1.2.3'
-    implementation ('ch.qos.logback:logback-classic:1.2.3') {
+    //m4bank dependencies
+    implementation deps.zlibrary
+    implementation deps.hardware.terminalCommon.values()
+    implementation deps.hardware.aisino.aisino_common
+    implementation deps.hardware.aisino.vm20.values()
+    implementation deps.hardware.wangpos.values()
+    implementation deps.hardware.roam.values()
+    implementation deps.hardware.spirelib
+    implementation deps.hardware.icmp.values()
+    implementation deps.hardware.atol.values()
+//    if (buildType.buildType == 'NFC') {
+//        implementation deps.hardware.softpos.softpaylibrary
+//        implementation deps.hardware.softpos.softpay_dependencies
+//    } else {
+//        implementation deps.hardware.aisino.a90.values()
+//    }
+    //implementation deps.hardware.softpos.softpaylibrary
+    //implementation deps.hardware.softpos.softpay_dependencies
+    implementation deps.hardware.aisino.a90.values()
+
+    implementation deps.hardware.shtrih.values()
+    implementation deps.hardware.redlib
+    implementation deps.hardware.sunmi
+    implementation deps.hardware.d200lib
+
+    //Implementation okhhtp library
+    implementation deps.okhttp.values()
+    //Implementation retrofit library
+    implementation deps.retrofit.values()
+    //Implementation rxJava library
+    implementation deps.rx.values()
+    //Implementation logback
+    implementation deps.logback.core
+    implementation(deps.logback.classic) {
         exclude group: 'com.google.android', module: 'android'
     }
-    //implementation deps.greendao
-    implementation 'org.greenrobot:greendao:3.3.0'
-    //implementation deps.timber
-    implementation 'com.jakewharton.timber:timber:4.7.1'
-    //implementation deps.paperdb
-    implementation 'io.paperdb:paperdb:2.6'
-    //implementation deps.retro_stream
-    implementation 'net.sourceforge.streamsupport:android-retrostreams:1.7.2'
-    //useWebsockets = true
-    //implementation deps.websockets
+    //Implementation other libraries
+    implementation deps.timber
+    implementation deps.paperdb
+    implementation deps.greendao
+
+    implementation deps.retro_stream
+
+    implementation deps.websockets // Only for useWebsockets parameter
 }
diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index db4b2b5..c081f83 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="com.example.aman_kassa_flutter">
     <!--
          io.flutter.app.FlutterApplication is an android.app.Application that
@@ -14,12 +15,14 @@
     <uses-permission android:name="android.permission.CAMERA" />
 
     <application
+        tools:replace="android:label"
         android:name="io.flutter.app.FlutterApplication"
         android:icon="@mipmap/ic_launcher"
         android:label="Аман Касса"
         android:roundIcon="@mipmap/ic_launcher_rounded"
         android:usesCleartextTraffic="true">
         <activity android:name=".bank.BankActivity" android:theme="@android:style/Theme.Black.NoTitleBar"></activity>
+        <activity android:name=".bank.M4BankActivity" android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.NoActionBar"></activity>
         <activity
             android:name=".MainActivity"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
diff --git a/android/app/src/main/assets/sounds/card_prompt.aac b/android/app/src/main/assets/sounds/card_prompt.aac
new file mode 100644
index 0000000000000000000000000000000000000000..c97b4f512929906c5cfb3941ea58c5eb09a615a2
GIT binary patch
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diff --git a/android/app/src/main/assets/sounds/card_read.wav b/android/app/src/main/assets/sounds/card_read.wav
new file mode 100644
index 0000000000000000000000000000000000000000..ec84dea8d40cbd2b8f83c1e104bad4f5607ac19c
GIT binary patch
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HcmV?d00001

diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ActivationCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ActivationCallbackHandlerImpl.java
new file mode 100644
index 0000000..1dd29bc
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ActivationCallbackHandlerImpl.java
@@ -0,0 +1,65 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.library.external.authorization.ActivationCallbackHandler;
+import ru.m4bank.mpos.service.data.dynamic.objects.ActivationType;
+import timber.log.Timber;
+
+public class ActivationCallbackHandlerImpl implements ActivationCallbackHandler {
+    private final M4BankActivity activity;
+
+    public ActivationCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onActivationTypeAndInfoRequested() {
+        Timber.i("FIRST STEP STARTED");
+        activity.getClientInterface().getAuthorizationManager().sendActivationFirstStepData(ActivationType.EMAIL, "dm@centercorptech.net");
+    }
+
+    @Override
+    public void onActivationCodeRequested(Integer codeLifetime) {
+        Timber.i("FIRST STEP COMPLETED");
+        Timber.i("SECOND STEP STARTED");
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("ADD activation code:");
+
+        EditText editext = new EditText(activity);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            activity.getClientInterface().getAuthorizationManager().sendActivationCode(editext.getText().toString());
+            dialog.dismiss();
+        });
+
+        builder.setView(editext);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+    @Override
+    public void onActivationConfirmRequested() {
+        Timber.i("SECOND STEP COMPLETED");
+        Timber.i("LAST STEP STARTED");
+        activity.getClientInterface().getAuthorizationManager().confirmActivation("1234", null);
+    }
+
+
+    @Override
+    public void onCompleted(Result result) {
+        Timber.i("COMPLETED WITH RESULT - " + result.getResultType());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        Timber.i("WRONG API CALLED");
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/AlipayPaymentCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/AlipayPaymentCallbackHandlerImpl.java
new file mode 100644
index 0000000..54d631e
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/AlipayPaymentCallbackHandlerImpl.java
@@ -0,0 +1,175 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.AlipayPaymentCallbackHandler;
+import ru.m4bank.mpos.service.data.FiscalStatusData;
+import ru.m4bank.mpos.service.data.dynamic.objects.AdditionalTransactionData;
+import ru.m4bank.mpos.service.data.dynamic.objects.AlipayCodeType;
+import ru.m4bank.mpos.service.data.dynamic.objects.IdentityCodeType;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.hardware.error.ErrorHandler;
+import ru.m4bank.mpos.service.result.PrinterResult;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.TransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionExecutionStatus;
+import ru.m4bank.mpos.service.transactions.data.error.TransactionErrorData;
+import timber.log.Timber;
+
+public class AlipayPaymentCallbackHandlerImpl implements AlipayPaymentCallbackHandler<Result> {
+
+    private final M4BankActivity activity;
+
+    public AlipayPaymentCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onWorkFlowDataRequested() {
+        Timber.d("WorkFlow requested");
+    }
+
+    @Override
+    public void onTransactionAmountRequested() {
+        activity.getClientInterface().getTransactionManager().setTransactionAmount(activity.getAmount());
+    }
+
+    @Override
+    public void onTransactionDataRequested() {
+        activity.getClientInterface().getTransactionManager().setAdditionalTransactionData(new AdditionalTransactionData.Builder(null).build());
+    }
+
+    @Override
+    public void onTransactionBarCodeRequested() {
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("ADD QRCODE:");
+
+        EditText editext = new EditText(activity);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            activity.getClientInterface().getTransactionManager().setTransactionBarCode(new IdentityCodeType(AlipayCodeType.QRCODE, editext.getText().toString()));
+            dialog.dismiss();
+        });
+
+        builder.setView(editext);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()),
+                Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionInit() {
+        activity.getClientInterface().getTransactionManager().processOnlineTransaction(false);
+    }
+
+
+    @Override
+    public void onTransactionExecutionStatusChanged(TransactionExecutionStatus newStatus) {
+
+    }
+
+    @Override
+    public void onError(ErrorHandler errorHandler, TransactionErrorData transactionErrorData) {
+
+    }
+
+    @Override
+    public void onErrorWithPossibilityToRetry(ErrorHandler errorHandler) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription() == null ? "" : errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+        activity.getClientInterface().getTransactionManager().tryToRepeatExecuteLastRequestInTransaction();
+    }
+
+    @Override
+    public void onTransactionDataReceivedError(TransactionData data) {
+
+    }
+
+    @Override
+    public void onUserInformationRequested(boolean signNeeded) {
+        activity.getClientInterface()
+                .getTransactionManager()
+                .sendTransactionUserData("signature", "phone", "email");
+    }
+
+    @Override
+    public void onTransactionDataReceived(TransactionData data) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction data has been received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionCompleted() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Operation has been successfully completed", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void notAuthorized() {
+
+    }
+
+    @Override
+    public void onTransactionDetailsReceived(Transaction transaction) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction details received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onSuccessStatusTransaction(Transaction transaction) {
+
+    }
+
+    @Override
+    public void onErrorStatusTransaction() {
+
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRequestedReportZ() {
+
+    }
+
+    @Override
+    public void onCompletedPrinting(PrinterResult printerResult) {
+
+    }
+
+    @Override
+    public void onStatusFiscalModule(FiscalStatusData fiscalStatusData) {
+
+    }
+
+    @Override
+    public void onPrinterForRegistrationGettingCompleted() {
+
+    }
+
+    @Override
+    public void onNoBoundedPrinterFound() {
+
+    }
+
+    @Override
+    public void onPrinterToUseSelectionRequested(List printerList) {
+
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/AuthorizationCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/AuthorizationCallbackHandlerImpl.java
new file mode 100644
index 0000000..c22d49e
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/AuthorizationCallbackHandlerImpl.java
@@ -0,0 +1,42 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.widget.Toast;
+import ru.m4bank.mpos.library.external.authorization.AuthorizationCallbackHandler;
+import ru.m4bank.mpos.service.authorization.network.AuthorizationResponse;
+
+
+public class AuthorizationCallbackHandlerImpl implements AuthorizationCallbackHandler {
+    private final M4BankActivity activity;
+
+    public AuthorizationCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onLoginAndPasswordRequested() {
+        activity.getClientInterface().getAuthorizationManager().sendLoginAndPassword(activity.getLogin(), activity.getPassword());
+    }
+
+
+    @Override
+    public void onCompleted(ru.m4bank.mpos.service.result.Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()),
+                Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCompleted(ru.m4bank.mpos.service.result.Result result, AuthorizationResponse authorizationResponse) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()),
+                Toast.LENGTH_SHORT).show());
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CardPaymentCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CardPaymentCallbackHandlerImpl.java
new file mode 100644
index 0000000..2f3de82
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CardPaymentCallbackHandlerImpl.java
@@ -0,0 +1,465 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import com.example.aman_kassa_flutter.bank.gui.CustomKeyBoardDilalog;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.CardPaymentCallbackHandler;
+import ru.m4bank.mpos.service.commons.data.ResultType;
+import ru.m4bank.mpos.service.data.FiscalStatusData;
+import ru.m4bank.mpos.service.data.PrinterBaseData;
+import ru.m4bank.mpos.service.data.PrinterErrorData;
+import ru.m4bank.mpos.service.data.dynamic.objects.AdditionalTransactionData;
+import ru.m4bank.mpos.service.data.dynamic.objects.GoodsData;
+import ru.m4bank.mpos.service.data.dynamic.objects.Reader;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.data.dynamic.objects.VendorData;
+import ru.m4bank.mpos.service.data.dynamic.objects.printer.enums.AccountingSubject;
+import ru.m4bank.mpos.service.data.dynamic.objects.printer.enums.TaxRate;
+import ru.m4bank.mpos.service.data.dynamic.objects.result.ResultCode;
+import ru.m4bank.mpos.service.hardware.error.AllError;
+import ru.m4bank.mpos.service.hardware.error.ErrorHandler;
+import ru.m4bank.mpos.service.hardware.external.cardreaderlib.data.ApplicationIdConv;
+import ru.m4bank.mpos.service.hardware.external.cardreaderlib.data.enums.TransactionTypeConv;
+import ru.m4bank.mpos.service.hardware.external.cardreaderlib.data.enums.VirtualKeyboardStyleTypeConv;
+import ru.m4bank.mpos.service.result.PrinterResult;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.ButtonKeyboardDto;
+import ru.m4bank.mpos.service.transactions.data.MessageButtonData;
+import ru.m4bank.mpos.service.transactions.data.TransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionExecutionStatus;
+import ru.m4bank.mpos.service.transactions.data.VirtualPinKeyboardData;
+import ru.m4bank.mpos.service.transactions.data.error.TransactionErrorData;
+import ru.m4bank.mpos.service.transactions.dto.OnlineCardDataDto;
+import timber.log.Timber;
+
+public class CardPaymentCallbackHandlerImpl implements CardPaymentCallbackHandler<Result> {
+    private final M4BankActivity activity;
+    private CustomKeyBoardDilalog customKeyBoardDilalog;
+    private TransactionTypeConv transactionTypeConv;
+
+    public CardPaymentCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+        customKeyBoardDilalog = new CustomKeyBoardDilalog();
+        transactionTypeConv = TransactionTypeConv.UNKNOWN;
+    }
+
+    public CardPaymentCallbackHandlerImpl setTransactionTypeConv(TransactionTypeConv transactionTypeConv) {
+        this.transactionTypeConv = transactionTypeConv;
+        return this;
+    }
+
+    @Override
+    public void onDeviceToConnectSelectionRequested(List<String> deviceList) {
+        Timber.d("onDeviceToConnectSelectionRequested");
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setTitle("Choose device");
+
+            Spinner deviceListSpinner = new Spinner(activity);
+            ArrayAdapter<String> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, deviceList);
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            deviceListSpinner.setAdapter(adapter);
+
+            builder.setPositiveButton("OK", (dialog, which) -> {
+                activity.getClientInterface()
+                        .getTransactionManager()
+                        .selectCardReader(deviceListSpinner.getSelectedItem().toString());
+                dialog.dismiss();
+            });
+
+            builder.setView(deviceListSpinner);
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onCardReaderForTransactionGettingCompleted() {
+        Timber.d("Reader has been received");
+    }
+
+    @Override
+    public void onNoBoundedDevicesFound() {
+        Timber.d("No bounded readers");
+    }
+
+    @Override
+    public void onDeviceToUseSelectionRequested(List<Reader> deviceList) {
+        Timber.d("onDeviceToUseSelectionRequested");
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setTitle("Choose device");
+
+            Spinner deviceListSpinner = new Spinner(activity);
+            ArrayAdapter<Reader> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(deviceList));
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            deviceListSpinner.setAdapter(adapter);
+
+            builder.setPositiveButton("OK", (dialog, which) -> {
+                activity.getClientInterface()
+                        .getTransactionManager()
+                        .setCardReaderToUse((Reader) deviceListSpinner.getSelectedItem());
+                dialog.dismiss();
+            });
+
+            builder.setView(deviceListSpinner);
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onTransactionAmountRequested() {
+        Timber.d("onTransactionAmountRequested");
+        activity.getClientInterface().getTransactionManager().setTransactionAmount(activity.getAmount());
+    }
+
+    @Override
+    public void onTransactionDataRequested() {
+        Timber.d("onTransactionDataRequested");
+        List<GoodsData> goodsDataList = new ArrayList<>();
+        goodsDataList.add(new GoodsData.Builder()
+                .setOriginalPrice(100000L)
+                .setRealPrice(100000L)
+                .setName("Принтер")
+                .setQuantity(1)
+                .setCode("000001")
+                .setUnits("00")
+                .setDiscount(0L)
+                .setTaxRate(TaxRate.Tax_18)
+                .setExponent(2)
+                .setAccountingSubject(AccountingSubject.PRODUCT)
+                .build());
+        goodsDataList.add(new GoodsData.Builder()
+                .setOriginalPrice(30065L)
+                .setRealPrice(30065L)
+                .setName("Услуга")
+                .setQuantity(3)
+                .setCode("000002")
+                .setUnits("00")
+                .setDiscount(0L)
+                .setTaxRate(TaxRate.Tax_18)
+                .setExponent(2)
+                .setAccountingSubject(AccountingSubject.PRODUCT)
+                .build());
+
+        HashMap<String, String> vendorDescription = new HashMap<>();
+        vendorDescription.put("vendor", "description");
+        vendorDescription.put("vendor1", "description1");
+        vendorDescription.put("vendor2", "description2");
+        vendorDescription.put("vendor3", "description3");
+        VendorData vendorData = new VendorData(vendorDescription);
+
+        AdditionalTransactionData additionalTransactionData = new AdditionalTransactionData.Builder(goodsDataList).vendorData(vendorData).build();
+        activity.getClientInterface().getTransactionManager().setAdditionalTransactionData(additionalTransactionData);
+    }
+
+    @Override
+    public void onWorkFlowDataRequested() {
+        Timber.d("WorkFlow requested");
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        Timber.d("onCompleted");
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        Timber.d("onWrongApiCalled");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onReceiveCardData(OnlineCardDataDto data, boolean shouldConfirmBeManuallyCalled) {
+        Timber.d("onReceiveCardData");
+        if (shouldConfirmBeManuallyCalled) {
+            activity.getClientInterface().getTransactionManager().processOnlineTransaction(false);
+        }
+    }
+
+    @Override
+    public void onTransactionInit() {
+        //Impossible
+        activity.getClientInterface().getTransactionManager().processOnlineTransaction(false);
+    }
+
+
+    @Override
+    public void onTransactionExecutionStatusChanged(TransactionExecutionStatus newStatus) {
+        Timber.d("onTransactionExecutionStatusChanged: " + newStatus.name());
+        activity.runOnUiThread(() -> Toast.makeText(activity, newStatus.name(), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onError(ErrorHandler errorHandler, TransactionErrorData transactionErrorData) {
+        if (transactionErrorData.getError() != null) {
+            activity.runOnUiThread(() -> Toast.makeText(activity, transactionErrorData.getError().getDescription(), Toast.LENGTH_LONG).show());
+        } else {
+            Timber.d("onError: %s, description: %s", ((AllError) errorHandler).name(), errorHandler.getDescription());
+            activity.runOnUiThread(() -> Toast.makeText(activity, String.format("onError: %s, description: %s", ((AllError) errorHandler).name(), errorHandler.getFinalDescription()), Toast.LENGTH_LONG).show());
+        }
+    }
+
+    @Override
+    public void onErrorWithPossibilityToRetry(ErrorHandler errorHandler) {
+        Timber.d("onErrorWithPossibilityToRetry: %s, description: %s", ((AllError) errorHandler).name(), errorHandler.getDescription());
+        activity.runOnUiThread(() -> Toast.makeText(activity, String.format("onError: %s, description: %s", ((AllError) errorHandler).name(), errorHandler.getFinalDescription()), Toast.LENGTH_LONG).show());
+        activity.getClientInterface().getTransactionManager().tryToRepeatExecuteLastRequestInTransaction();
+    }
+
+    @Override
+    public void onTransactionDataReceivedError(TransactionData data) {
+        Timber.d("onTransactionDataReceivedError");
+    }
+
+    @Override
+    public void onUserInformationRequested(boolean signNeeded) {
+        Timber.d("onUserInformationRequested");
+        if (transactionTypeConv != TransactionTypeConv.CANCEL) {
+            activity.getClientInterface()
+                    .getTransactionManager()
+                    .sendTransactionUserData("signature", "phone", "vsa@centercorptech.net");
+        } else {
+            onTransactionCompleted();
+        }
+    }
+
+    @Override
+    public void onTransactionDataReceived(TransactionData data) {
+        Timber.d("onTransactionDataReceived");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction data has been received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionCompleted() {
+        Timber.d("onTransactionCompleted");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Operation has been successfully completed", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onRequiredHostAddress() {
+        Timber.d("onRequiredHostAddress");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Set Host Address", Toast.LENGTH_LONG)
+                .show());
+        activity.getClientInterface().getTransactionManager().setHostAddress("213.79.122.128", "8011");
+    }
+
+    @Override
+    public void onDisconnectedEventReceivedOrCanNotEstablishConnection(boolean reconnectAvailable, String description) {
+        Timber.d("onDisconnectedEventReceivedOrCanNotEstablishConnection");
+        if (reconnectAvailable) {
+            activity.runOnUiThread(() -> {
+                AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+                builder.setMessage("Connection to cardreader has been lost, try to reconnect and repeat last operation?");
+                builder.setCancelable(false);
+                builder.setPositiveButton("Yes", (dialog, which) -> activity.getClientInterface().tryToReconnectAndRepeatLast());
+                builder.setNegativeButton("No", (dialog, which) -> activity.getClientInterface().cancel());
+                builder.create().show();
+            });
+        }
+    }
+
+    @Override
+    public void onConnectingProcessStarted(String deviceName) {
+        Timber.d("Connecting process started: %s", deviceName);
+    }
+
+    @Override
+    public void onReconnectNeededToProcess() {
+        Timber.d("onReconnectNeededToProcess");
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setMessage("Connection to cardreader has been lost, try to reconnect and continue?");
+            builder.setCancelable(false);
+            builder.setPositiveButton("Yes", (dialog, which) -> activity.getClientInterface().getTransactionManager().tryToReconnectToCardReader());
+            builder.setNegativeButton("No", (dialog, which) -> activity.getClientInterface().cancel());
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onReconciliationRequiredToProcess() {
+        Timber.d("onReconciliationRequiredToProcess");
+        Timber.d("Reconciliation required!!!");
+        activity.getClientInterface().getTransactionManager().makeReconciliationDuringTransaction();
+    }
+
+    @Override
+    public void onReconciliationCompleted(Result result) {
+        Timber.d("onReconciliationCompleted");
+        Timber.d("Reconciliation completed!!!");
+        if (result.getResultType() == ResultType.SUCCESSFUL) {
+            activity.getClientInterface().getTransactionManager().continueTransactionAfterReconciliation();
+        } else {
+            activity.runOnUiThread(() -> Toast.makeText(activity, "Reconciliation failed " + result.getDescription(), Toast.LENGTH_LONG)
+                    .show());
+        }
+    }
+
+    @Override
+    public void notAuthorized() {
+        Timber.d("notAuthorized");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "notAuthorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionDetailsReceived(Transaction transaction) {
+        Timber.d("onTransactionDetailsReceived");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction details received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onSuccessStatusTransaction(Transaction transaction) {
+        Timber.d("onSuccessStatusTransaction");
+    }
+
+    @Override
+    public void onErrorStatusTransaction() {
+        Timber.d("onErrorStatusTransaction");
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        Timber.d("onRepeat");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRequestedReportZ() {
+        Timber.d("onRequestedReportZ");
+    }
+
+    @Override
+    public void onCompletedPrinting(PrinterResult<PrinterErrorData, PrinterBaseData> printerErrorDataPrinterBaseDataPrinterResult) {
+        Timber.d("onCompletedPrinting");
+    }
+
+    @Override
+    public void onStatusFiscalModule(FiscalStatusData fiscalStatusData) {
+        Timber.d("onStatusFiscalModule");
+    }
+
+    @Override
+    public void onPrinterForRegistrationGettingCompleted() {
+        Timber.d("onPrinterForRegistrationGettingCompleted");
+    }
+
+    @Override
+    public void onNoBoundedPrinterFound() {
+        Timber.d("onNoBoundedPrinterFound");
+
+    }
+
+    @Override
+    public void onPrinterToUseSelectionRequested(List<String> printerList) {
+        Timber.d("onPrinterToUseSelectionRequested");
+    }
+
+    @Override
+    public void onRequiredReversal(String description, ResultCode resultCode) {
+        Timber.d("onRequiredReversal: %s, resultCode: %s", description, resultCode.name());
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setMessage("Revert last of operation?");
+            builder.setCancelable(false);
+            builder.setPositiveButton("Yes", (dialog, which) -> activity.getClientInterface().getTransactionManager().revertCurrentOperation(new RevertCurrentOperationCallbackHandlerImpl(activity)));
+            builder.setNegativeButton("No", (dialog, which) -> activity.getClientInterface().getTransactionManager().clearLastTransactionInformation());
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onRequiredApplicationSelection(List<ApplicationIdConv> list) {
+        Timber.d("onRequiredApplicationSelection");
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setTitle("Choose application identifier");
+
+            Spinner deviceListSpinner = new Spinner(activity);
+            ArrayAdapter<ApplicationIdConv> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, list);
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            deviceListSpinner.setAdapter(adapter);
+
+            builder.setPositiveButton("OK", (dialog, which) -> {
+                activity.getClientInterface()
+                        .getTransactionManager()
+                        .setTransactionApplicationIdentifier((ApplicationIdConv) deviceListSpinner.getSelectedItem());
+                dialog.dismiss();
+            });
+
+            builder.setView(deviceListSpinner);
+            builder.create().show();
+        });
+    }
+
+
+    @Override
+    public void onActivityUpdateUiThread() {
+        Timber.d("onActivityUpdateUiThread");
+        activity.getClientInterface().getTransactionManager().addPinpadClickListener(activity);
+    }
+
+    @Override
+    public void onCreatePinPadButtons() {
+        Timber.d("onCreatePinPadButtons");
+        customKeyBoardDilalog.createDialog(activity);
+        customKeyBoardDilalog.show(activity);
+        ButtonKeyboardDto buttonKeyboardDto = new ButtonKeyboardDto.Build(
+                customKeyBoardDilalog.getBtnb1(),
+                customKeyBoardDilalog.getBtnb2(),
+                customKeyBoardDilalog.getBtnb3(),
+                customKeyBoardDilalog.getBtnb4(),
+                customKeyBoardDilalog.getBtnb5(),
+                customKeyBoardDilalog.getBtnb6(),
+                customKeyBoardDilalog.getBtnb7(),
+                customKeyBoardDilalog.getBtnb8(),
+                customKeyBoardDilalog.getBtnb9(),
+                customKeyBoardDilalog.getBtnb0(),
+                customKeyBoardDilalog.getBtncancel(),
+                customKeyBoardDilalog.getBtnconfirm(),
+                customKeyBoardDilalog.getBtnclean(),
+                activity.getWindowManager().getDefaultDisplay().getRotation()
+        ).build();
+        activity.getClientInterface().getTransactionManager().addPinPadButtons(buttonKeyboardDto);
+    }
+
+    @Override
+    public void onShowPinPadKeyBoard(MessageButtonData messageButtonData) {
+        Timber.d("onShowPinPadKeyBoard");
+        customKeyBoardDilalog.setText(messageButtonData);
+    }
+
+    @Override
+    public void onUpdateElementPin(int count) {
+        Timber.d("onUpdateElementPin");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "count = " + count, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCloseKeyboard() {
+        Timber.d("onCloseKeyboard");
+        customKeyBoardDilalog.close(activity);
+    }
+
+    @Override
+    public void onRequiredAdditionalVirtualKeyboardSettings(VirtualKeyboardStyleTypeConv virtualKeyboardStyleTypeConv) {
+        activity.showSelectStyleDialog(additionalData ->
+                activity.getClientInterface().getTransactionManager().addVirtualPinKeyboardData(additionalData));
+    }
+
+    public interface SelectStyleListener {
+        void onSelectStyle(VirtualPinKeyboardData virtualPinKeyboardData);
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CardReadingCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CardReadingCallbackHandlerImpl.java
new file mode 100644
index 0000000..09167f7
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CardReadingCallbackHandlerImpl.java
@@ -0,0 +1,217 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import com.example.aman_kassa_flutter.bank.gui.CustomKeyBoardDilalog;
+
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.CardReadingCallbackHandler;
+import ru.m4bank.mpos.service.commons.utils.ArrayUtils;
+import ru.m4bank.mpos.service.data.dynamic.objects.Reader;
+import ru.m4bank.mpos.service.hardware.error.ErrorHandler;
+import ru.m4bank.mpos.service.hardware.external.cardreaderlib.data.ApplicationIdConv;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.SimpleCardTransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionExecutionStatus;
+import ru.m4bank.mpos.service.transactions.data.error.TransactionErrorData;
+import timber.log.Timber;
+
+public class CardReadingCallbackHandlerImpl implements CardReadingCallbackHandler<Result> {
+    private final M4BankActivity activity;
+    private CustomKeyBoardDilalog customKeyBoardDilalog;
+
+    public CardReadingCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+        customKeyBoardDilalog = new CustomKeyBoardDilalog();
+    }
+
+    @Override
+    public void onDeviceToConnectSelectionRequested(List<String> deviceList) {
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setTitle("Choose device");
+
+            Spinner deviceListSpinner = new Spinner(activity);
+            ArrayAdapter<String> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, deviceList);
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            deviceListSpinner.setAdapter(adapter);
+
+            builder.setPositiveButton("OK", (dialog, which) -> {
+                activity.getClientInterface()
+                        .getTransactionManager()
+                        .selectCardReader(deviceListSpinner.getSelectedItem().toString());
+                dialog.dismiss();
+            });
+
+            builder.setView(deviceListSpinner);
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onCardReaderForTransactionGettingCompleted() {
+        Timber.d("Reader has been received");
+    }
+
+    @Override
+    public void onNoBoundedDevicesFound() {
+        Timber.d("No bounded readers");
+    }
+
+    @Override
+    public void onDeviceToUseSelectionRequested(List<Reader> deviceList) {
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setTitle("Choose device");
+
+            Spinner deviceListSpinner = new Spinner(activity);
+            ArrayAdapter<Reader> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, ArrayUtils.newArrayList(deviceList));
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            deviceListSpinner.setAdapter(adapter);
+
+            builder.setPositiveButton("OK", (dialog, which) -> {
+                activity.getClientInterface()
+                        .getTransactionManager()
+                        .setCardReaderToUse((Reader) deviceListSpinner.getSelectedItem());
+                dialog.dismiss();
+            });
+
+            builder.setView(deviceListSpinner);
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + result.getDescription(), Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionInit() {
+
+    }
+
+
+    @Override
+    public void onTransactionExecutionStatusChanged(TransactionExecutionStatus newStatus) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, newStatus.name(), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onError(ErrorHandler errorHandler, TransactionErrorData errorData) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+    }
+
+    @Override
+    public void onErrorWithPossibilityToRetry(ErrorHandler errorHandler) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+        activity.getClientInterface().getTransactionManager().tryToRepeatExecuteLastRequestInTransaction();
+    }
+
+    @Override
+    public void onTransactionDataReceivedError(TransactionData data) {
+
+    }
+
+    @Override
+    public void onUserInformationRequested(boolean signNeeded) {
+        activity.getClientInterface()
+                .getTransactionManager()
+                .sendTransactionUserData("signature", "phone", "vsa@centercorptech.net");
+    }
+
+    @Override
+    public void onTransactionDataReceived(TransactionData data) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction data has been received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionCompleted() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Operation has been successfully completed", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onDisconnectedEventReceivedOrCanNotEstablishConnection(boolean reconnectAvailable, String description) {
+        if (reconnectAvailable) {
+            activity.runOnUiThread(() -> {
+                AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+                builder.setMessage("Connection to cardreader has been lost, try to reconnect and repeat last operation?");
+                builder.setCancelable(false);
+                builder.setPositiveButton("Yes", (dialog, which) -> activity.getClientInterface().tryToReconnectAndRepeatLast());
+                builder.setNegativeButton("No", (dialog, which) -> activity.getClientInterface().cancel());
+                builder.create().show();
+            });
+        }
+    }
+
+    @Override
+    public void onConnectingProcessStarted(String deviceName) {
+        Timber.d("Connecting process started");
+    }
+
+    @Override
+    public void onReconnectNeededToProcess() {
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setMessage("Connection to cardreader has been lost, try to reconnect and continue?");
+            builder.setCancelable(false);
+            builder.setPositiveButton("Yes", (dialog, which) -> activity.getClientInterface().getTransactionManager().tryToReconnectToCardReader());
+            builder.setNegativeButton("No", (dialog, which) -> activity.getClientInterface().cancel());
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void notAuthorized() {
+
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onReceiveCommonCardData(SimpleCardTransactionData simpleCardTransactionData) {
+        String pan = simpleCardTransactionData.getCardNumber();
+        String expDate = simpleCardTransactionData.getCardExpiryDate();
+        String cardHolderName = simpleCardTransactionData.getCardHolderName();
+        activity.runOnUiThread(() -> Toast.makeText(activity, "card data: " + pan + " - " + expDate + " - " + cardHolderName, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRequiredApplicationSelection(List<ApplicationIdConv> applicationOfList) {
+        //        activity.runOnUiThread(() -> {
+        //            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        //            builder.setTitle("Choose application identifier");
+        //
+        //            Spinner deviceListSpinner = new Spinner(activity);
+        //            ArrayAdapter<String> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, applicationOfList);
+        //            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        //            deviceListSpinner.setAdapter(adapter);
+        //
+        //            builder.setPositiveButton("OK", (dialog, which) -> {
+        //                activity.getClientInterface()
+        //                        .getTransactionManager()
+        //                        .setTransactionApplicationIdentifier(deviceListSpinner.getSelectedItem().toString());
+        //                dialog.dismiss();
+        //            });
+        //
+        //            builder.setView(deviceListSpinner);
+        //            builder.create().show();
+        //        });
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CardRefundCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CardRefundCallbackHandlerImpl.java
new file mode 100644
index 0000000..6175933
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CardRefundCallbackHandlerImpl.java
@@ -0,0 +1,336 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import com.example.aman_kassa_flutter.bank.gui.CustomKeyBoardDilalog;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.EasyCardRefundCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.GetTransactionsListCallbackHandler;
+import ru.m4bank.mpos.service.data.FiscalStatusData;
+import ru.m4bank.mpos.service.data.PrinterBaseData;
+import ru.m4bank.mpos.service.data.PrinterErrorData;
+import ru.m4bank.mpos.service.data.dynamic.objects.Reader;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.data.dynamic.objects.result.ResultCode;
+import ru.m4bank.mpos.service.data.dynamic.objects.transaction.RefundType;
+import ru.m4bank.mpos.service.hardware.error.AllError;
+import ru.m4bank.mpos.service.hardware.error.ErrorHandler;
+import ru.m4bank.mpos.service.hardware.external.cardreaderlib.data.ApplicationIdConv;
+import ru.m4bank.mpos.service.hardware.external.cardreaderlib.data.enums.VirtualKeyboardStyleTypeConv;
+import ru.m4bank.mpos.service.result.PrinterResult;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.ButtonKeyboardDto;
+import ru.m4bank.mpos.service.transactions.data.MessageButtonData;
+import ru.m4bank.mpos.service.transactions.data.TransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionExecutionStatus;
+import ru.m4bank.mpos.service.transactions.data.error.TransactionErrorData;
+import ru.m4bank.mpos.service.transactions.dto.OnlineCardDataDto;
+import timber.log.Timber;
+
+public class CardRefundCallbackHandlerImpl implements EasyCardRefundCallbackHandler<Result>, GetTransactionsListCallbackHandler<Result> {
+
+    private final M4BankActivity activity;
+    private Transaction transaction;
+    private CustomKeyBoardDilalog customKeyBoardDilalog;
+
+    public CardRefundCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+        customKeyBoardDilalog = new CustomKeyBoardDilalog();
+    }
+
+    @Override
+    public void onCardReaderForTransactionGettingCompleted() {
+        Timber.d("Reader has been received");
+    }
+
+    @Override
+    public void onNoBoundedDevicesFound() {
+        Timber.d("No bounded readers");
+    }
+
+    @Override
+    public void onDeviceToUseSelectionRequested(List<Reader> deviceList) {
+        Timber.d("onDeviceToUseSelectionRequested");
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("Choose device");
+
+        Spinner deviceListSpinner = new Spinner(activity);
+        ArrayAdapter<Reader> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(deviceList));
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        deviceListSpinner.setAdapter(adapter);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            activity.getClientInterface().getTransactionManager().setCardReaderToUse((Reader) deviceListSpinner.getSelectedItem());
+            dialog.dismiss();
+        });
+
+        builder.setView(deviceListSpinner);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+    @Override
+    public void onDeviceToConnectSelectionRequested(List<String> deviceList) {
+        Timber.d("onDeviceToConnectSelectionRequested");
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("Choose device");
+
+        Spinner deviceListSpinner = new Spinner(activity);
+        ArrayAdapter<String> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, deviceList);
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        deviceListSpinner.setAdapter(adapter);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            activity.getClientInterface().getTransactionManager().selectCardReader(deviceListSpinner.getSelectedItem().toString());
+            dialog.dismiss();
+        });
+
+        builder.setView(deviceListSpinner);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        Timber.d("onCompleted");
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()),
+                Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        Timber.d("onWrongApiCalled");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onReceiveCardData(OnlineCardDataDto data, boolean shouldConfirmBeManuallyCalled) {
+        Timber.d("onReceiveCardData");
+        if (shouldConfirmBeManuallyCalled) {
+            activity.getClientInterface().getTransactionManager().processOnlineTransaction(false);
+        }
+    }
+
+    @Override
+    public void onRequiredReversal(String description, ResultCode resultCode) {
+        Timber.d("onRequiredReversal: %s, resultCode: %s", description, resultCode.name());
+    }
+
+    @Override
+    public void onRequiredApplicationSelection(List<ApplicationIdConv> list) {
+        Timber.d("onRequiredApplicationSelection");
+    }
+
+    @Override
+    public void onTransactionInit() {
+
+    }
+
+
+    @Override
+    public void onTransactionExecutionStatusChanged(TransactionExecutionStatus newStatus) {
+        Timber.d("onTransactionExecutionStatusChanged: %s", newStatus.name());
+        activity.runOnUiThread(() -> Toast.makeText(activity, newStatus.name(), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onError(ErrorHandler errorHandler, TransactionErrorData transactionErrorData) {
+        Timber.d("onError: %s, description: %s", ((AllError) errorHandler).name(), errorHandler.getDescription());
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+    }
+
+    @Override
+    public void onErrorWithPossibilityToRetry(ErrorHandler errorHandler) {
+        Timber.d("onErrorWithPossibilityToRetry: %s, description: %s", ((AllError) errorHandler).name(), errorHandler.getDescription());
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+        activity.getClientInterface().getTransactionManager().tryToRepeatExecuteLastRequestInTransaction();
+    }
+
+    @Override
+    public void onTransactionDataReceivedError(TransactionData data) {
+        Timber.d("onTransactionDataReceivedError");
+    }
+
+    @Override
+    public void onUserInformationRequested(boolean signNeeded) {
+        Timber.d("onUserInformationRequested");
+        activity.getClientInterface().getTransactionManager().sendTransactionUserData("signature", "phone", "email");
+    }
+
+    @Override
+    public void onTransactionDataReceived(TransactionData data) {
+        Timber.d("onTransactionDataReceived");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction data has been received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionCompleted() {
+        Timber.d("onTransactionCompleted");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Operation has been successfully completed", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onDisconnectedEventReceivedOrCanNotEstablishConnection(boolean reconnectAvailable, String description) {
+        Timber.d("onDisconnectedEventReceivedOrCanNotEstablishConnection");
+    }
+
+    @Override
+    public void onConnectingProcessStarted(String name) {
+        Timber.d("onConnectingProcessStarted: %s", name);
+    }
+
+    @Override
+    public void onReconnectNeededToProcess() {
+        Timber.d("onReconnectNeededToProcess");
+    }
+
+    @Override
+    public void onReconciliationRequiredToProcess() {
+        Timber.d("onReconciliationRequiredToProcess");
+        Timber.d("Reconciliation required!!!");
+        activity.getClientInterface().getTransactionManager().makeReconciliationDuringTransaction();
+    }
+
+    @Override
+    public void onReconciliationCompleted(Result result) {
+        Timber.d("onReconciliationCompleted");
+        Timber.d("Reconciliation completed!!!");
+    }
+
+    @Override
+    public void notAuthorized() {
+        Timber.d("notAuthorized");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "notAuthorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        Timber.d("onRepeat");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRequestedReportZ() {
+        Timber.d("onRequestedReportZ");
+    }
+
+    @Override
+    public void onCompletedPrinting(PrinterResult<PrinterErrorData, PrinterBaseData> printerErrorDataPrinterBaseDataPrinterResult) {
+        Timber.d("onCompletedPrinting");
+    }
+
+    @Override
+    public void onStatusFiscalModule(FiscalStatusData fiscalStatusData) {
+        Timber.d("onStatusFiscalModule");
+    }
+
+    @Override
+    public void onPrinterForRegistrationGettingCompleted() {
+        Timber.d("onPrinterForRegistrationGettingCompleted");
+    }
+
+    @Override
+    public void onNoBoundedPrinterFound() {
+        Timber.d("onNoBoundedPrinterFound");
+    }
+
+    @Override
+    public void onPrinterToUseSelectionRequested(List<String> printerList) {
+        Timber.d("onPrinterToUseSelectionRequested");
+    }
+
+    @Override
+    public void onRefundDataRequested() {
+        Timber.d("onRefundDataRequested");
+        activity.getClientInterface().getTransactionManager().setRefundData(transaction, transaction.getAmount(), RefundType.General);
+    }
+
+    @Override
+    public void onTransactionsListReceived(List<Transaction> transactionList) {
+        Timber.d("onTransactionsListReceived");
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("Choose transaction");
+
+        Spinner transactionListSpinner = new Spinner(activity);
+        ArrayAdapter<Transaction> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(transactionList));
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        transactionListSpinner.setAdapter(adapter);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            transaction = (Transaction) transactionListSpinner.getSelectedItem();
+            activity.getClientInterface().getTransactionManager().makeCardRefund(this);
+            dialog.dismiss();
+        });
+
+        builder.setView(transactionListSpinner);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+    @Override
+    public void onActivityUpdateUiThread() {
+        Timber.d("onActivityUpdateUiThread");
+        activity.getClientInterface().getTransactionManager().addPinpadClickListener(activity);
+    }
+
+    @Override
+    public void onCreatePinPadButtons() {
+        Timber.d("onCreatePinPadButtons");
+        customKeyBoardDilalog.createDialog(activity);
+        customKeyBoardDilalog.show(activity);
+        ButtonKeyboardDto buttonKeyboardDto = new ButtonKeyboardDto.Build(
+                customKeyBoardDilalog.getBtnb1(),
+                customKeyBoardDilalog.getBtnb2(),
+                customKeyBoardDilalog.getBtnb3(),
+                customKeyBoardDilalog.getBtnb4(),
+                customKeyBoardDilalog.getBtnb5(),
+                customKeyBoardDilalog.getBtnb6(),
+                customKeyBoardDilalog.getBtnb7(),
+                customKeyBoardDilalog.getBtnb8(),
+                customKeyBoardDilalog.getBtnb9(),
+                customKeyBoardDilalog.getBtnb0(),
+                customKeyBoardDilalog.getBtncancel(),
+                customKeyBoardDilalog.getBtnconfirm(),
+                customKeyBoardDilalog.getBtnclean(),
+                activity.getWindowManager().getDefaultDisplay().getRotation()
+        ).build();
+        activity.getClientInterface().getTransactionManager().addPinPadButtons(buttonKeyboardDto);
+    }
+
+    @Override
+    public void onShowPinPadKeyBoard(MessageButtonData messageButtonData) {
+        Timber.d("onShowPinPadKeyBoard");
+        customKeyBoardDilalog.setText(messageButtonData);
+    }
+
+    @Override
+    public void onUpdateElementPin(int count) {
+        Timber.d("onUpdateElementPin");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "count = " + count, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCloseKeyboard() {
+        Timber.d("onCloseKeyboard");
+        customKeyBoardDilalog.close(activity);
+    }
+
+    @Override
+    public void onRequiredAdditionalVirtualKeyboardSettings(VirtualKeyboardStyleTypeConv virtualKeyboardStyleTypeConv) {
+        activity.showSelectStyleDialog(additionalData ->
+                activity.getClientInterface().getTransactionManager().addVirtualPinKeyboardData(additionalData));
+    }
+
+    @Override
+    public void onRequiredHostAddress() {
+        Timber.d("onRequiredHostAddress");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Set Host Address", Toast.LENGTH_LONG)
+                .show());
+        activity.getClientInterface().getTransactionManager().setHostAddress("213.79.122.128", "8011");
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CashPaymentCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CashPaymentCallbackHandlerImpl.java
new file mode 100644
index 0000000..95f6317
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CashPaymentCallbackHandlerImpl.java
@@ -0,0 +1,187 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.CashPaymentCallbackHandler;
+import ru.m4bank.mpos.service.data.FiscalStatusData;
+import ru.m4bank.mpos.service.data.dynamic.objects.AdditionalTransactionData;
+import ru.m4bank.mpos.service.data.dynamic.objects.GoodsData;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.data.dynamic.objects.printer.enums.AccountingSubject;
+import ru.m4bank.mpos.service.data.dynamic.objects.printer.enums.TaxRate;
+import ru.m4bank.mpos.service.hardware.error.ErrorHandler;
+import ru.m4bank.mpos.service.result.PrinterResult;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.TransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionExecutionStatus;
+import ru.m4bank.mpos.service.transactions.data.error.TransactionErrorData;
+import timber.log.Timber;
+
+public class CashPaymentCallbackHandlerImpl implements CashPaymentCallbackHandler<Result> {
+
+    private final M4BankActivity activity;
+
+    public CashPaymentCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onWorkFlowDataRequested() {
+        Timber.d("WorkFlow requested");
+    }
+
+    @Override
+    public void onTransactionAmountRequested() {
+        activity.getClientInterface().getTransactionManager().setTransactionAmount(activity.getAmount());
+    }
+
+    @Override
+    public void onTransactionDataRequested() {
+        List<GoodsData> goodsDataList = new ArrayList<>();
+        goodsDataList.add(new GoodsData.Builder()
+                .setOriginalPrice(100000L)
+                .setRealPrice(100000L)
+                .setName("Принтер")
+                .setQuantity(1)
+                .setCode("000001")
+                .setUnits("00")
+                .setDiscount(0L)
+                .setTaxRate(TaxRate.Tax_18)
+                .setExponent(2)
+                .setAccountingSubject(AccountingSubject.PRODUCT)
+                .build());
+        goodsDataList.add(new GoodsData.Builder()
+                .setOriginalPrice(30065L)
+                .setRealPrice(30065L)
+                .setName("Услуга")
+                .setQuantity(3)
+                .setCode("000002")
+                .setUnits("00")
+                .setDiscount(0L)
+                .setTaxRate(TaxRate.Tax_18)
+                .setExponent(2)
+                .setAccountingSubject(AccountingSubject.PRODUCT)
+                .build());
+
+        AdditionalTransactionData additionalTransactionData = new AdditionalTransactionData.Builder(goodsDataList).build();
+        activity.getClientInterface().getTransactionManager().setAdditionalTransactionData(additionalTransactionData);
+    }
+
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()),
+                Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionInit() {
+        Timber.d("onTransactionInit");
+        activity.getClientInterface().getTransactionManager().processOnlineTransaction(false);
+    }
+
+
+    @Override
+    public void onTransactionExecutionStatusChanged(TransactionExecutionStatus newStatus) {
+
+    }
+
+    @Override
+    public void onError(ErrorHandler errorHandler, TransactionErrorData transactionErrorData) {
+
+    }
+
+    @Override
+    public void onErrorWithPossibilityToRetry(ErrorHandler errorHandler) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+        activity.getClientInterface().getTransactionManager().tryToRepeatExecuteLastRequestInTransaction();
+    }
+
+    @Override
+    public void onTransactionDataReceivedError(TransactionData data) {
+
+    }
+
+    @Override
+    public void onUserInformationRequested(boolean signNeeded) {
+        activity.getClientInterface()
+                .getTransactionManager()
+                .sendTransactionUserData("signature", "phone", "email");
+    }
+
+    @Override
+    public void onTransactionDataReceived(TransactionData data) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction data has been received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionCompleted() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Operation has been successfully completed", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "notAuthorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionDetailsReceived(Transaction transaction) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction details received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onSuccessStatusTransaction(Transaction transaction) {
+
+    }
+
+    @Override
+    public void onErrorStatusTransaction() {
+
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRequestedReportZ() {
+
+    }
+
+    @Override
+    public void onCompletedPrinting(PrinterResult printerResult) {
+
+    }
+
+    @Override
+    public void onStatusFiscalModule(FiscalStatusData fiscalStatusData) {
+
+    }
+
+    @Override
+    public void onPrinterForRegistrationGettingCompleted() {
+
+    }
+
+    @Override
+    public void onNoBoundedPrinterFound() {
+
+    }
+
+    @Override
+    public void onPrinterToUseSelectionRequested(List printerList) {
+
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CheckConnectionCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CheckConnectionCallbackHandlerImpl.java
new file mode 100644
index 0000000..1e873c8
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CheckConnectionCallbackHandlerImpl.java
@@ -0,0 +1,24 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.widget.Toast;
+
+import ru.m4bank.mpos.library.external.configuration.CheckConnectionCallbackHandler;
+import ru.m4bank.mpos.service.result.CheckConnectionExternalResult;
+
+public class CheckConnectionCallbackHandlerImpl implements CheckConnectionCallbackHandler {
+    private final M4BankActivity activity;
+
+    public CheckConnectionCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onCompleted(CheckConnectionExternalResult result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()) + " " + result.isOnlineRegistration(), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CloseDayCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CloseDayCallbackHandlerImpl.java
new file mode 100644
index 0000000..79c2a62
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CloseDayCallbackHandlerImpl.java
@@ -0,0 +1,52 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.widget.Toast;
+
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.CloseDayCallbackHandler;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.handling.result.CloseDayResult;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.network.closeday.CloseDayResponseInfo;
+
+
+class CloseDayCallbackHandlerImpl implements CloseDayCallbackHandler<Result> {
+    private final M4BankActivity activity;
+
+    CloseDayCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+             .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionsListReceived(List<Transaction> transactionList, List<CloseDayResponseInfo> list1) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "onTransactionsListReceived - " + transactionList, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCompleted(CloseDayResult closeDayResult) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, closeDayResult.getResultType() + " " + (closeDayResult.getDescription() == null ? "" : closeDayResult.getDescription()), Toast.LENGTH_SHORT)
+                .show());
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CustomApplication.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CustomApplication.java
new file mode 100644
index 0000000..d4ab6ea
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CustomApplication.java
@@ -0,0 +1,21 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.Application;
+
+
+import timber.log.Timber;
+
+public class CustomApplication extends Application {
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        Thread.setDefaultUncaughtExceptionHandler((thread, ex) -> {
+            Timber.v(ex.getMessage());
+            for (StackTraceElement element : ex.getStackTrace()) {
+                Timber.v(element.toString());
+            }
+            ex.printStackTrace();
+            System.exit(0);
+        });
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CustomSSLSocketFactory.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CustomSSLSocketFactory.java
new file mode 100644
index 0000000..c7e82c5
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CustomSSLSocketFactory.java
@@ -0,0 +1,81 @@
+package com.example.aman_kassa_flutter.bank;
+
+import org.apache.http.conn.scheme.LayeredSocketFactory;
+import org.apache.http.params.HttpConnectionParams;
+import org.apache.http.params.HttpParams;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.Socket;
+import java.security.KeyStore;
+
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLSocket;
+import javax.net.ssl.TrustManager;
+
+public class CustomSSLSocketFactory implements LayeredSocketFactory {
+    private SSLContext sslcontext = null;
+    private KeyStore keyStore = null;
+
+    public CustomSSLSocketFactory() {
+    }
+
+    public CustomSSLSocketFactory(KeyStore keyStore) {
+        this.keyStore = keyStore;
+    }
+
+    private SSLContext createEasySSLContext() throws IOException {
+        try {
+            SSLContext context = SSLContext.getInstance("TLS");
+            context.init(null, new TrustManager[] { new CustomTrustManager(keyStore) }, null);
+            return context;
+        } catch (Exception e) {
+            throw new IOException(e.getMessage());
+        }
+    }
+
+    private SSLContext getSSLContext() throws IOException {
+        if (this.sslcontext == null) {
+            this.sslcontext = createEasySSLContext();
+        }
+        return this.sslcontext;
+    }
+
+    public Socket connectSocket(Socket sock, String host, int port,
+                                InetAddress localAddress, int localPort, HttpParams params)
+            throws IOException {
+        int connTimeout = HttpConnectionParams.getConnectionTimeout(params);
+        int soTimeout = HttpConnectionParams.getSoTimeout(params);
+
+        InetSocketAddress remoteAddress = new InetSocketAddress(host, port);
+        SSLSocket sslSocket = (SSLSocket) ((sock != null) ? sock : createSocket());
+
+        if ((localAddress != null) || (localPort > 0)) {
+            // we need to bind explicitly
+            if (localPort < 0) {
+                localPort = 0; // indicates "any"
+            }
+            InetSocketAddress isa = new InetSocketAddress(localAddress,
+                    localPort);
+            sslSocket.bind(isa);
+        }
+
+        sslSocket.connect(remoteAddress, connTimeout);
+        sslSocket.setSoTimeout(soTimeout);
+        return sslSocket;
+    }
+
+    public Socket createSocket() throws IOException {
+        return getSSLContext().getSocketFactory().createSocket();
+    }
+
+    public boolean isSecure(Socket socket) throws IllegalArgumentException {
+        return true;
+    }
+
+    public Socket createSocket(Socket socket, String host, int port,
+                               boolean autoClose) throws IOException {
+        return getSSLContext().getSocketFactory().createSocket(socket, host, port, autoClose);
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CustomTrustManager.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CustomTrustManager.java
new file mode 100644
index 0000000..f61f70d
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/CustomTrustManager.java
@@ -0,0 +1,40 @@
+package com.example.aman_kassa_flutter.bank;
+
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.cert.CertificateException;
+import java.security.cert.X509Certificate;
+
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.TrustManagerFactory;
+import javax.net.ssl.X509TrustManager;
+
+public class CustomTrustManager implements X509TrustManager {
+    private X509TrustManager standardTrustManager;
+
+    public CustomTrustManager(KeyStore keystore) throws NoSuchAlgorithmException, KeyStoreException {
+        super();
+        TrustManagerFactory factory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
+        factory.init(keystore);
+        TrustManager[] trustManagers = factory.getTrustManagers();
+        if (trustManagers.length == 0) {
+            throw new NoSuchAlgorithmException("no trust manager found");
+        }
+        standardTrustManager = (X509TrustManager)trustManagers[0];
+    }
+
+    public void checkClientTrusted(X509Certificate[] certificates, String authType) throws CertificateException {
+        standardTrustManager.checkClientTrusted(certificates, authType);
+    }
+
+    public void checkServerTrusted(X509Certificate[] certificates, String authType) throws CertificateException {
+        if ((certificates != null) && (certificates.length == 1)) {
+            certificates[0].checkValidity();
+        }
+    }
+
+    public X509Certificate[] getAcceptedIssuers() {
+        return this.standardTrustManager.getAcceptedIssuers();
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/DataCreatorUtils.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/DataCreatorUtils.java
new file mode 100644
index 0000000..697f443
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/DataCreatorUtils.java
@@ -0,0 +1,144 @@
+package com.example.aman_kassa_flutter.bank;
+
+import java.util.Calendar;
+import java.util.Date;
+
+import ru.m4bank.mpos.service.commons.Lists;
+import ru.m4bank.mpos.service.data.dynamic.objects.CurrencyEnum;
+import ru.m4bank.mpos.service.data.dynamic.objects.ExternalVerificationType;
+import ru.m4bank.mpos.service.data.dynamic.objects.GoodsData;
+import ru.m4bank.mpos.service.data.dynamic.objects.ProductsAndTransactionData;
+import ru.m4bank.mpos.service.data.dynamic.objects.TransactionStatus;
+import ru.m4bank.mpos.service.data.dynamic.objects.printer.enums.AccountingSubject;
+import ru.m4bank.mpos.service.data.dynamic.objects.printer.enums.TaxRate;
+import ru.m4bank.mpos.service.data.dynamic.objects.printer.enums.TaxSystem;
+import ru.m4bank.mpos.service.hardware.external.cardreaderlib.data.enums.CardTransTypeConv;
+import ru.m4bank.mpos.service.hardware.external.cardreaderlib.data.enums.TransactionTypeConv;
+import ru.m4bank.mpos.service.hardware.printer.dto.data.FiscalPrinterMerchantData;
+import ru.m4bank.mpos.service.hardware.printer.dto.data.PrinterInformationCheck;
+import ru.m4bank.mpos.service.hardware.printer.dto.data.TransactionSlipData;
+import ru.m4bank.mpos.service.transactions.data.AccountingSign;
+import ru.m4bank.mpos.service.transactions.data.CorrectionType;
+import ru.m4bank.mpos.service.transactions.data.external.CurrencyAmount;
+import ru.m4bank.mpos.service.transactions.data.external.ExternalCorrectionData;
+import ru.m4bank.mpos.service.transactions.data.external.ExternalFiscalData;
+import ru.m4bank.mpos.service.transactions.data.external.ExternalSlipData;
+import ru.m4bank.mpos.service.transactions.data.external.ExternalStubData;
+
+public class DataCreatorUtils {
+    public static ExternalCorrectionData makeCorrectionData() {
+        Calendar date = Calendar.getInstance();
+        date.set(2019, 3, 1);
+        return new ExternalCorrectionData.Builder()
+                .currencyAmount(makeCurrencyAmount())
+                .calculationSign(AccountingSign.INCOMING)
+                .correctionType(CorrectionType.INDEPENDENTLY)
+                .taxRate(TaxRate.Tax_20)
+                .cash(true)
+                .docNumber("ПС345454")
+                .docDate(date)
+                .docDescription(" ")
+                .stubData(makeStubData())
+                .build();
+    }
+
+    public static ExternalFiscalData makeFiscalData() {
+        return new ExternalFiscalData.Builder()
+                .cash(false)
+                .currency("643")
+                .phone("12345678")
+                .informationCheckData(makeInformationCheckData())
+                .productsAndTransactionData(makeProductsAndTransactionData())
+                .externalStubData(makeStubData())
+                .transactionTypeConv(TransactionTypeConv.PAYMENT)
+                .build();
+    }
+
+    public static ExternalSlipData makeSlipData(boolean newCheck) {
+        return new ExternalSlipData.Builder()
+                .currencyAmount(makeCurrencyAmount())
+                .cash(false)
+                .merchantData(makeMerchantData())
+                .newCheck(newCheck)
+                .transactionData(makeTransactionData())
+                .transactionType(TransactionTypeConv.PAYMENT)
+                .cashierName("Петров В.В.")
+                .build();
+    }
+
+    public static CurrencyAmount makeCurrencyAmount() {
+        return new CurrencyAmount.Builder().amount(10000).currencyCode(CurrencyEnum.RUS.getStringCurrency()).build();
+    }
+
+    public static FiscalPrinterMerchantData makeMerchantData() {
+        return new FiscalPrinterMerchantData.Builder()
+                .merchantAddress("улица Твардовского, Москва Россия")
+                .merchantId("1732056")
+                .merchantInn("123456489123")
+                .merchantName("Center of corporate technologies")
+                .build();
+    }
+
+    public static TransactionSlipData makeTransactionData() {
+        return new TransactionSlipData.Builder()
+                .applicationId("A40000100023056")
+                .authCode("447041")
+                .cardHolderName("IVANOV/I")
+                .currencyCode("643")
+                .hostResultCode("00")
+                .interaction(CardTransTypeConv.MAGNETIC_STRIPE)
+                .originalPan("************8888")
+                .pan("************8176")
+                .rrn("123456789")
+                .terminalNumber("00687879")
+                .terminalVerificationResults("00000")
+                .transactionDate(new Date())
+                .transactionStatus(TransactionStatus.APPROVED)
+                .typeCard("Mastercard")
+                .typeVerification(ExternalVerificationType.PIN)
+                .phone("88008008008562")
+                .build();
+    }
+
+    public static ExternalStubData makeStubData() {
+        return new ExternalStubData.Builder()
+                .shiftNumber("0001")
+                .factoryNumberKKT("0000000000")
+                .registerNumberKKT("00000000000000000")
+                .fiscalDocNumber("2780")
+                .fiscalMemoryNumber("9999078900003063")
+                .fiscalSign("32323933373534383633")
+                .formOfTaxation("УСН")
+                .merchantData(makeMerchantData())
+                .phone("12-12-12")
+                .productsAndTransactionData(makeProductsAndTransactionData())
+                .build();
+    }
+
+    private static ProductsAndTransactionData makeProductsAndTransactionData() {
+        return new ProductsAndTransactionData(
+                Lists.newArrayList(new GoodsData.Builder()
+                        .setOriginalPrice(1500L)
+                        .setRealPrice(1400L)
+                        .setName("Товар")
+                        .setQuantity(1)
+                        .setCode("1")
+                        .setUnits("00")
+                        .setExponent(2)
+                        .setDiscount(100L)
+                        .setTaxRate(TaxRate.Tax_10)
+                        .setAccountingSubject(AccountingSubject.OTHER)
+                        .build()),
+                1400L, 100L, 1, CurrencyEnum.RUS, TaxSystem.Common);
+    }
+
+    public static PrinterInformationCheck makeInformationCheckData() {
+        return new PrinterInformationCheck.Builder()
+                .setCheckNumber("00")
+                .setDocNumber("1")
+                .setPd("00")
+                .setDateAndTime(new Date())
+                .setInn("7777777777")
+                .build();
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyAlipayRefundCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyAlipayRefundCallbackHandlerImpl.java
new file mode 100644
index 0000000..3a155f3
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyAlipayRefundCallbackHandlerImpl.java
@@ -0,0 +1,152 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.EasyAlipayRefundCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.GetTransactionsListCallbackHandler;
+import ru.m4bank.mpos.service.data.FiscalStatusData;
+import ru.m4bank.mpos.service.data.PrinterBaseData;
+import ru.m4bank.mpos.service.data.PrinterErrorData;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.data.dynamic.objects.transaction.RefundType;
+import ru.m4bank.mpos.service.hardware.error.ErrorHandler;
+import ru.m4bank.mpos.service.result.PrinterResult;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.TransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionExecutionStatus;
+import ru.m4bank.mpos.service.transactions.data.error.TransactionErrorData;
+
+public class EasyAlipayRefundCallbackHandlerImpl implements EasyAlipayRefundCallbackHandler<Result>, GetTransactionsListCallbackHandler<Result> {
+
+    private final M4BankActivity activity;
+    private Transaction transaction;
+
+    public EasyAlipayRefundCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionInit() {
+
+    }
+
+    @Override
+    public void onTransactionExecutionStatusChanged(TransactionExecutionStatus newStatus) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, newStatus.name(), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onError(ErrorHandler errorHandler, TransactionErrorData transactionErrorData) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+    }
+
+    @Override
+    public void onErrorWithPossibilityToRetry(ErrorHandler errorHandler) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+        activity.getClientInterface().getTransactionManager().tryToRepeatExecuteLastRequestInTransaction();
+    }
+
+    @Override
+    public void onTransactionDataReceivedError(TransactionData data) {
+
+    }
+
+    @Override
+    public void onUserInformationRequested(boolean signNeeded) {
+        activity.getClientInterface().getTransactionManager().sendTransactionUserData("signature", "phone", "email");
+    }
+
+    @Override
+    public void onTransactionDataReceived(TransactionData data) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction data has been received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionCompleted() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Operation has been successfully completed", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onRefundDataRequested() {
+        activity.getClientInterface().getTransactionManager().setRefundData(transaction, transaction.getAmount(), RefundType.General);
+    }
+
+    @Override
+    public void onTransactionsListReceived(List<Transaction> transactionList) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("Choose transaction");
+
+        Spinner transactionListSpinner = new Spinner(activity);
+        ArrayAdapter<Transaction> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(transactionList));
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        transactionListSpinner.setAdapter(adapter);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            transaction = (Transaction) transactionListSpinner.getSelectedItem();
+            activity.getClientInterface().getTransactionManager().makeAlipayRefund(this);
+            dialog.dismiss();
+        });
+
+        builder.setView(transactionListSpinner);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRequestedReportZ() {
+
+    }
+
+    @Override
+    public void onCompletedPrinting(PrinterResult<PrinterErrorData, PrinterBaseData> printerErrorDataPrinterBaseDataPrinterResult) {
+
+    }
+
+    @Override
+    public void onStatusFiscalModule(FiscalStatusData fiscalStatusData) {
+
+    }
+
+    @Override
+    public void onPrinterForRegistrationGettingCompleted() {
+
+    }
+
+    @Override
+    public void onNoBoundedPrinterFound() {
+
+    }
+
+    @Override
+    public void onPrinterToUseSelectionRequested(List<String> printerList) {
+
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyCardReversalCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyCardReversalCallbackHandlerImpl.java
new file mode 100644
index 0000000..7001a3b
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyCardReversalCallbackHandlerImpl.java
@@ -0,0 +1,363 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.EasyReversalCardCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.GetTransactionsListCallbackHandler;
+import ru.m4bank.mpos.service.commons.data.ResultType;
+import ru.m4bank.mpos.service.data.FiscalStatusData;
+import ru.m4bank.mpos.service.data.PrinterBaseData;
+import ru.m4bank.mpos.service.data.PrinterErrorData;
+import ru.m4bank.mpos.service.data.dynamic.objects.Reader;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.data.dynamic.objects.result.ResultCode;
+import ru.m4bank.mpos.service.hardware.error.ErrorHandler;
+import ru.m4bank.mpos.service.hardware.external.cardreaderlib.data.ApplicationIdConv;
+import ru.m4bank.mpos.service.hardware.external.cardreaderlib.data.enums.VirtualKeyboardStyleTypeConv;
+import ru.m4bank.mpos.service.result.PrinterResult;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.MessageButtonData;
+import ru.m4bank.mpos.service.transactions.data.TransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionExecutionStatus;
+import ru.m4bank.mpos.service.transactions.data.error.TransactionErrorData;
+import ru.m4bank.mpos.service.transactions.dto.OnlineCardDataDto;
+import timber.log.Timber;
+
+public class EasyCardReversalCallbackHandlerImpl implements EasyReversalCardCallbackHandler<Result>, GetTransactionsListCallbackHandler<Result> {
+
+    private final M4BankActivity activity;
+    private Transaction transaction;
+
+    public EasyCardReversalCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCardReaderForTransactionGettingCompleted() {
+        Timber.d("Reader has been received");
+    }
+
+    @Override
+    public void onNoBoundedDevicesFound() {
+        Timber.d("No bounded readers");
+    }
+
+    @Override
+    public void onConnectingProcessStarted(String deviceName) {
+
+    }
+
+    @Override
+    public void onDisconnectedEventReceivedOrCanNotEstablishConnection(boolean reconnectAvailable, String description) {
+        if (reconnectAvailable) {
+            activity.runOnUiThread(() -> {
+                AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+                builder.setMessage("Connection to cardreader has been lost, try to reconnect and repeat last operation?");
+                builder.setCancelable(false);
+                builder.setPositiveButton("Yes", (dialog, which) -> activity.getClientInterface().tryToReconnectAndRepeatLast());
+                builder.setNegativeButton("No", (dialog, which) -> activity.getClientInterface().cancel());
+                builder.create().show();
+            });
+        }
+    }
+
+    @Override
+    public void onDeviceToConnectSelectionRequested(List deviceList) {
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setTitle("Choose device");
+
+            Spinner deviceListSpinner = new Spinner(activity);
+            ArrayAdapter<String> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, deviceList);
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            deviceListSpinner.setAdapter(adapter);
+
+            builder.setPositiveButton("OK", (dialog, which) -> {
+                activity.getClientInterface()
+                        .getTransactionManager()
+                        .selectCardReader(deviceListSpinner.getSelectedItem().toString());
+                dialog.dismiss();
+            });
+
+            builder.setView(deviceListSpinner);
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onWorkFlowDataRequested() {
+
+    }
+
+    @Override
+    public void onReceiveCardData(OnlineCardDataDto data, boolean shouldConfirmBeManuallyCalled) {
+        if (shouldConfirmBeManuallyCalled) {
+            activity.getClientInterface().getTransactionManager().processOnlineTransaction(false);
+        }
+    }
+
+    @Override
+    public void onRequiredReversal(String description, ResultCode resultCode) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "onRequiredReversal", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onRequiredApplicationSelection(List<ApplicationIdConv> list) {
+
+    }
+
+    @Override
+    public void onPrinterForRegistrationGettingCompleted() {
+
+    }
+
+    @Override
+    public void onNoBoundedPrinterFound() {
+
+    }
+
+    @Override
+    public void onTransactionDetailsReceived(Transaction transaction) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "onTransactionDetailsReceived", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onSuccessStatusTransaction(Transaction transaction) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "onSuccessStatusTransaction", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onErrorStatusTransaction() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "onErrorStatusTransaction", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onRequestedReportZ() {
+
+    }
+
+    @Override
+    public void onCompletedPrinting(PrinterResult<PrinterErrorData, PrinterBaseData> printerErrorDataPrinterBaseDataPrinterResult) {
+
+    }
+
+    @Override
+    public void onStatusFiscalModule(FiscalStatusData fiscalStatusData) {
+
+    }
+
+    @Override
+    public void onReconciliationRequiredToProcess() {
+        Timber.d("Reconciliation required!!!");
+        activity.getClientInterface().getTransactionManager().makeReconciliationDuringTransaction();
+    }
+
+    @Override
+    public void onReconciliationCompleted(Result result) {
+        Timber.d("Reconciliation completed!!!");
+        if (result.getResultType() == ResultType.SUCCESSFUL) {
+            activity.getClientInterface().getTransactionManager().continueTransactionAfterReconciliation();
+        } else {
+            activity.runOnUiThread(() -> Toast.makeText(activity, "Reconciliation failed " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_LONG)
+                    .show());
+        }
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+
+    }
+
+    @Override
+    public void onTransactionAmountRequested() {
+
+    }
+
+    @Override
+    public void onTransactionDataRequested() {
+
+    }
+
+    @Override
+    public void onDeviceToUseSelectionRequested(List deviceList) {
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setTitle("Choose device");
+
+            Spinner deviceListSpinner = new Spinner(activity);
+            ArrayAdapter<Reader> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(deviceList));
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            deviceListSpinner.setAdapter(adapter);
+
+            builder.setPositiveButton("OK", (dialog, which) -> {
+                activity.getClientInterface()
+                        .getTransactionManager()
+                        .setCardReaderToUse((Reader) deviceListSpinner.getSelectedItem());
+                dialog.dismiss();
+            });
+
+            builder.setView(deviceListSpinner);
+            activity.runOnUiThread(() -> builder.create().show());
+        });
+    }
+
+    @Override
+    public void onPrinterToUseSelectionRequested(List printerList) {
+
+    }
+
+    @Override
+    public void onTransactionInit() {
+
+    }
+
+    @Override
+    public void onTransactionExecutionStatusChanged(TransactionExecutionStatus newStatus) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, newStatus.name(), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onUserInformationRequested(boolean signNeeded) {
+
+    }
+
+    @Override
+    public void onError(ErrorHandler errorHandler, TransactionErrorData transactionErrorData) {
+        if (errorHandler.getCode() != null && errorHandler.getDescription() != null) {
+            activity.runOnUiThread(() -> Toast.makeText(activity, "Error Code: " + errorHandler.getCode() + " error Description: "
+                    + errorHandler.getDescription(), Toast.LENGTH_LONG)
+                    .show());
+        } else {
+            activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getServerCode() + " "
+                    + errorHandler.getServerDescription(), Toast.LENGTH_LONG)
+                    .show());
+        }
+    }
+
+    @Override
+    public void onErrorWithPossibilityToRetry(ErrorHandler errorHandler) {
+        activity.getClientInterface().getTransactionManager().tryToRepeatExecuteLastRequestInTransaction();
+    }
+
+    @Override
+    public void onTransactionDataReceivedError(TransactionData data) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "onTransactionDataReceivedError", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionDataReceived(TransactionData data) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction data has been received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionCompleted() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Operation has been successfully completed", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onReconnectNeededToProcess() {
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setMessage("Connection to cardreader has been lost, try to reconnect and continue?");
+            builder.setCancelable(false);
+            builder.setPositiveButton("Yes", (dialog, which) -> activity.getClientInterface().getTransactionManager().tryToReconnectToCardReader());
+            builder.setNegativeButton("No", (dialog, which) -> activity.getClientInterface().cancel());
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onWrongTerminal() {
+
+    }
+
+    @Override
+    public void onSelectTransaction() {
+        activity.getClientInterface().getTransactionManager().selectTransaction(transaction);
+    }
+
+    @Override
+    public void onTransactionsListReceived(List<Transaction> transactionList) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("Choose transaction");
+
+        Spinner transactionListSpinner = new Spinner(activity);
+        ArrayAdapter<Transaction> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(transactionList));
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        transactionListSpinner.setAdapter(adapter);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            transaction = (Transaction) transactionListSpinner.getSelectedItem();
+            activity.getClientInterface().getTransactionManager().makeCardReversal(this);
+            dialog.dismiss();
+        });
+
+        builder.setView(transactionListSpinner);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+    @Override
+    public void onTransactionSelectionRequested(List<Transaction> transactionList) {
+
+    }
+
+    @Override
+    public void onActivityUpdateUiThread() {
+
+    }
+
+    @Override
+    public void onCreatePinPadButtons() {
+
+    }
+
+    @Override
+    public void onShowPinPadKeyBoard(MessageButtonData messageButtonData) {
+
+    }
+
+    @Override
+    public void onUpdateElementPin(int i) {
+
+    }
+
+    @Override
+    public void onCloseKeyboard() {
+
+    }
+
+    @Override
+    public void onRequiredAdditionalVirtualKeyboardSettings(VirtualKeyboardStyleTypeConv virtualKeyboardStyleTypeConv) {
+        activity.showSelectStyleDialog(additionalData ->
+                activity.getClientInterface().getTransactionManager().addVirtualPinKeyboardData(additionalData));
+    }
+}
\ No newline at end of file
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyCashRefundCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyCashRefundCallbackHandlerImpl.java
new file mode 100644
index 0000000..ee85f2e
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyCashRefundCallbackHandlerImpl.java
@@ -0,0 +1,153 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.EasyCashRefundCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.GetTransactionsListCallbackHandler;
+import ru.m4bank.mpos.service.data.FiscalStatusData;
+import ru.m4bank.mpos.service.data.PrinterBaseData;
+import ru.m4bank.mpos.service.data.PrinterErrorData;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.data.dynamic.objects.transaction.RefundType;
+import ru.m4bank.mpos.service.hardware.error.ErrorHandler;
+import ru.m4bank.mpos.service.result.PrinterResult;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.TransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionExecutionStatus;
+import ru.m4bank.mpos.service.transactions.data.error.TransactionErrorData;
+
+public class EasyCashRefundCallbackHandlerImpl implements EasyCashRefundCallbackHandler<Result>, GetTransactionsListCallbackHandler<Result> {
+
+    private final M4BankActivity activity;
+    private Transaction transaction;
+
+    public EasyCashRefundCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionInit() {
+        activity.getClientInterface().getTransactionManager().processOnlineTransaction(false);
+    }
+
+
+    @Override
+    public void onTransactionExecutionStatusChanged(TransactionExecutionStatus newStatus) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, newStatus.name(), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onError(ErrorHandler errorHandler, TransactionErrorData transactionErrorData) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+    }
+
+    @Override
+    public void onErrorWithPossibilityToRetry(ErrorHandler errorHandler) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+        activity.getClientInterface().getTransactionManager().tryToRepeatExecuteLastRequestInTransaction();
+    }
+
+    @Override
+    public void onTransactionDataReceivedError(TransactionData data) {
+
+    }
+
+    @Override
+    public void onUserInformationRequested(boolean signNeeded) {
+        activity.getClientInterface().getTransactionManager().sendTransactionUserData("signature", "phone", "email");
+    }
+
+    @Override
+    public void onTransactionDataReceived(TransactionData data) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction data has been received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionCompleted() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Operation has been successfully completed", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onRefundDataRequested() {
+        activity.getClientInterface().getTransactionManager().setRefundData(transaction, transaction.getAmount(), RefundType.General);
+    }
+
+    @Override
+    public void onTransactionsListReceived(List<Transaction> transactionList) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("Choose transaction");
+
+        Spinner transactionListSpinner = new Spinner(activity);
+        ArrayAdapter<Transaction> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(transactionList));
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        transactionListSpinner.setAdapter(adapter);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            transaction = (Transaction) transactionListSpinner.getSelectedItem();
+            activity.getClientInterface().getTransactionManager().makeCashRefund(this);
+            dialog.dismiss();
+        });
+
+        builder.setView(transactionListSpinner);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRequestedReportZ() {
+
+    }
+
+    @Override
+    public void onCompletedPrinting(PrinterResult<PrinterErrorData, PrinterBaseData> printerErrorDataPrinterBaseDataPrinterResult) {
+
+    }
+
+    @Override
+    public void onStatusFiscalModule(FiscalStatusData fiscalStatusData) {
+
+    }
+
+    @Override
+    public void onPrinterForRegistrationGettingCompleted() {
+
+    }
+
+    @Override
+    public void onNoBoundedPrinterFound() {
+
+    }
+
+    @Override
+    public void onPrinterToUseSelectionRequested(List<String> printerList) {
+
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyEcomRefundCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyEcomRefundCallbackHandlerImpl.java
new file mode 100644
index 0000000..e454fc3
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyEcomRefundCallbackHandlerImpl.java
@@ -0,0 +1,157 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.EasyEcomRefundCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.GetTransactionsListCallbackHandler;
+import ru.m4bank.mpos.service.data.FiscalStatusData;
+import ru.m4bank.mpos.service.data.PrinterBaseData;
+import ru.m4bank.mpos.service.data.PrinterErrorData;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.data.dynamic.objects.transaction.RefundType;
+import ru.m4bank.mpos.service.hardware.error.ErrorHandler;
+import ru.m4bank.mpos.service.result.PrinterResult;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.TransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionExecutionStatus;
+import ru.m4bank.mpos.service.transactions.data.error.TransactionErrorData;
+
+public class EasyEcomRefundCallbackHandlerImpl implements EasyEcomRefundCallbackHandler<Result>, GetTransactionsListCallbackHandler<Result> {
+
+    private final M4BankActivity activity;
+    private Transaction transaction;
+
+    public EasyEcomRefundCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionInit() {
+
+    }
+
+    @Override
+    public void onTransactionExecutionStatusChanged(TransactionExecutionStatus newStatus) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, newStatus.name(), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onError(ErrorHandler errorHandler, TransactionErrorData transactionErrorData) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+    }
+
+    @Override
+    public void onErrorWithPossibilityToRetry(ErrorHandler errorHandler) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+        activity.getClientInterface().getTransactionManager().tryToRepeatExecuteLastRequestInTransaction();
+    }
+
+    @Override
+    public void onTransactionDataReceivedError(TransactionData data) {
+
+    }
+
+    @Override
+    public void onUserInformationRequested(boolean signNeeded) {
+        activity.getClientInterface().getTransactionManager().sendTransactionUserData("signature", "phone", "email");
+    }
+
+    @Override
+    public void onTransactionDataReceived(TransactionData data) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction data has been received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionCompleted() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Operation has been successfully completed", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onRefundDataRequested() {
+        activity.getClientInterface().getTransactionManager().setRefundData(transaction, transaction.getAmount(), RefundType.General);
+    }
+
+    @Override
+    public void onTransactionsListReceived(List<Transaction> transactionList) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("Choose transaction");
+
+        Spinner transactionListSpinner = new Spinner(activity);
+        ArrayAdapter<Transaction> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(transactionList));
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        transactionListSpinner.setAdapter(adapter);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            transaction = (Transaction) transactionListSpinner.getSelectedItem();
+            activity.getClientInterface().getTransactionManager().makeEcomRefund(this);
+            dialog.dismiss();
+        });
+
+        builder.setView(transactionListSpinner);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRequestedReportZ() {
+
+    }
+
+    @Override
+    public void onCompletedPrinting(PrinterResult<PrinterErrorData, PrinterBaseData> printerErrorDataPrinterBaseDataPrinterResult) {
+
+    }
+
+    @Override
+    public void onStatusFiscalModule(FiscalStatusData fiscalStatusData) {
+
+    }
+
+    @Override
+    public void onPrinterForRegistrationGettingCompleted() {
+
+    }
+
+    @Override
+    public void onNoBoundedPrinterFound() {
+
+    }
+
+    @Override
+    public void onPrinterToUseSelectionRequested(List<String> printerList) {
+
+    }
+
+    @Override
+    public void onPreviewTransactionDataReceived(TransactionData transactionData) {
+
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyReversalCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyReversalCallbackHandlerImpl.java
new file mode 100644
index 0000000..8cf9bb4
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EasyReversalCallbackHandlerImpl.java
@@ -0,0 +1,177 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.GetTransactionsListCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.ReversalCallbackHandler;
+import ru.m4bank.mpos.service.data.FiscalStatusData;
+import ru.m4bank.mpos.service.data.PrinterBaseData;
+import ru.m4bank.mpos.service.data.PrinterErrorData;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.hardware.error.ErrorHandler;
+import ru.m4bank.mpos.service.result.PrinterResult;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.TransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionExecutionStatus;
+import ru.m4bank.mpos.service.transactions.data.error.TransactionErrorData;
+
+public class EasyReversalCallbackHandlerImpl implements ReversalCallbackHandler<Result>, GetTransactionsListCallbackHandler<Result> {
+
+    private final M4BankActivity activity;
+    private Transaction transaction;
+
+    public EasyReversalCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onTransactionSelectionRequested(List<Transaction> transactionList) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("Choose transaction");
+
+        Spinner transactionListSpinner = new Spinner(activity);
+        ArrayAdapter<Transaction> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(transactionList));
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        transactionListSpinner.setAdapter(adapter);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            activity.getClientInterface().getTransactionManager().selectTransaction((Transaction) transactionListSpinner.getSelectedItem());
+            dialog.dismiss();
+        });
+
+        builder.setView(transactionListSpinner);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+    @Override
+    public void onCardShortPanRequested() {
+        activity.getClientInterface().getTransactionManager().setCardShortPan("0069", 20, 0);
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionInit() {
+        activity.getClientInterface().getTransactionManager().processOnlineTransaction(false);
+    }
+
+
+    @Override
+    public void onTransactionExecutionStatusChanged(TransactionExecutionStatus newStatus) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, newStatus.name(), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onError(ErrorHandler errorHandler, TransactionErrorData transactionErrorData) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+    }
+
+    @Override
+    public void onErrorWithPossibilityToRetry(ErrorHandler errorHandler) {
+
+    }
+
+    @Override
+    public void onTransactionDataReceivedError(TransactionData data) {
+
+    }
+
+    @Override
+    public void onUserInformationRequested(boolean signNeeded) {
+        //activity.getClientInterface().getTransactionManager().sendTransactionUserData(null, "phone", "email");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction reversal complete", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionDataReceived(TransactionData data) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction data has been received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionCompleted() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Operation has been successfully completed", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onSelectTransaction() {
+        activity.getClientInterface().getTransactionManager().selectTransaction(transaction);
+    }
+
+    @Override
+    public void onTransactionsListReceived(List<Transaction> transactionList) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("Choose transaction");
+
+        Spinner transactionListSpinner = new Spinner(activity);
+        ArrayAdapter<Transaction> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(transactionList));
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        transactionListSpinner.setAdapter(adapter);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            transaction = (Transaction) transactionListSpinner.getSelectedItem();
+            activity.getClientInterface().getTransactionManager().makeEasyReversal(this);
+            dialog.dismiss();
+        });
+
+        builder.setView(transactionListSpinner);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+    @Override
+    public void onRequestedReportZ() {
+
+    }
+
+    @Override
+    public void onCompletedPrinting(PrinterResult<PrinterErrorData, PrinterBaseData> printerErrorDataPrinterBaseDataPrinterResult) {
+
+    }
+
+    @Override
+    public void onStatusFiscalModule(FiscalStatusData fiscalStatusData) {
+
+    }
+
+    @Override
+    public void onPrinterForRegistrationGettingCompleted() {
+
+    }
+
+    @Override
+    public void onNoBoundedPrinterFound() {
+
+    }
+
+    @Override
+    public void onPrinterToUseSelectionRequested(List<String> list) {
+
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EcomPaymentCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EcomPaymentCallbackHandlerImpl.java
new file mode 100644
index 0000000..ba217a4
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/EcomPaymentCallbackHandlerImpl.java
@@ -0,0 +1,174 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.widget.Toast;
+
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.EcomPaymentCallbackHandler;
+import ru.m4bank.mpos.service.data.FiscalStatusData;
+import ru.m4bank.mpos.service.data.dynamic.objects.AdditionalTransactionData;
+import ru.m4bank.mpos.service.data.dynamic.objects.EmailStatus;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.hardware.error.ErrorHandler;
+import ru.m4bank.mpos.service.result.PrinterResult;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.TransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionExecutionStatus;
+import ru.m4bank.mpos.service.transactions.data.error.TransactionErrorData;
+import timber.log.Timber;
+
+public class EcomPaymentCallbackHandlerImpl implements EcomPaymentCallbackHandler<Result> {
+
+    private final M4BankActivity activity;
+
+    public EcomPaymentCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onWorkFlowDataRequested() {
+        Timber.d("WorkFlow requested");
+    }
+
+    @Override
+    public void onTransactionAmountRequested() {
+        activity.getClientInterface().getTransactionManager().setTransactionAmount(activity.getAmount());
+    }
+
+    @Override
+    public void onTransactionDataRequested() {
+        activity.getClientInterface().getTransactionManager().setAdditionalTransactionData(new AdditionalTransactionData.Builder(null).build());
+    }
+
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionInit() {
+        activity.getClientInterface().getTransactionManager().processOnlineTransaction(false);
+    }
+
+
+    @Override
+    public void onTransactionExecutionStatusChanged(TransactionExecutionStatus newStatus) {
+
+    }
+
+    @Override
+    public void onError(ErrorHandler errorHandler, TransactionErrorData transactionErrorData) {
+
+    }
+
+    @Override
+    public void onErrorWithPossibilityToRetry(ErrorHandler errorHandler) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+        activity.getClientInterface().getTransactionManager().tryToRepeatExecuteLastRequestInTransaction();
+    }
+
+    @Override
+    public void onTransactionDataReceivedError(TransactionData data) {
+
+    }
+
+    @Override
+    public void onUserInformationRequested(boolean signNeeded) {
+        activity.getClientInterface()
+                .getTransactionManager()
+                .sendTransactionUserData("signature", "phone", "email");
+    }
+
+    @Override
+    public void onFormUrlRequested(String formUrl) {
+
+        activity.getClientInterface()
+                .getTransactionManager()
+                .sendEcomEmail("qrCode", null, "ap@m4bank.com", EmailStatus.SEND);
+
+        activity.runOnUiThread(() -> Toast.makeText(activity, "onFormUrlRequested " + formUrl, Toast.LENGTH_LONG)
+                .show());
+
+    }
+
+    @Override
+    public void onPreviewTransactionDataReceived(TransactionData data) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Preview Transaction data has been received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionDataReceived(TransactionData data) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction data has been received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionCompleted() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Operation has been successfully completed", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionDetailsReceived(Transaction transaction) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction details received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onSuccessStatusTransaction(Transaction transaction) {
+
+    }
+
+    @Override
+    public void onErrorStatusTransaction() {
+
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRequestedReportZ() {
+
+    }
+
+    @Override
+    public void onCompletedPrinting(PrinterResult printerResult) {
+
+    }
+
+    @Override
+    public void onStatusFiscalModule(FiscalStatusData fiscalStatusData) {
+
+    }
+
+    @Override
+    public void onPrinterForRegistrationGettingCompleted() {
+
+    }
+
+    @Override
+    public void onNoBoundedPrinterFound() {
+
+    }
+
+    @Override
+    public void onPrinterToUseSelectionRequested(List printerList) {
+
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetLicenseCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetLicenseCallbackHandlerImpl.java
new file mode 100644
index 0000000..4336f1a
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetLicenseCallbackHandlerImpl.java
@@ -0,0 +1,34 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.widget.Toast;
+
+import ru.m4bank.mpos.library.external.configuration.GetLicenseCallbackHandler;
+import ru.m4bank.mpos.service.result.Result;
+
+public class GetLicenseCallbackHandlerImpl implements GetLicenseCallbackHandler<Result> {
+    private final M4BankActivity activity;
+
+    public GetLicenseCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onLicenseReceived(String license) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, license, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetMerchantUsersCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetMerchantUsersCallbackHandlerImpl.java
new file mode 100644
index 0000000..fa27a18
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetMerchantUsersCallbackHandlerImpl.java
@@ -0,0 +1,38 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.widget.Toast;
+
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.authorization.GetMerchantUsersCallbackHandler;
+import ru.m4bank.mpos.service.data.dynamic.objects.MerchantUser;
+import ru.m4bank.mpos.service.result.Result;
+
+public class GetMerchantUsersCallbackHandlerImpl implements GetMerchantUsersCallbackHandler<Result> {
+    private final M4BankActivity activity;
+
+    public GetMerchantUsersCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+             .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onListOfUsersRequested(List<MerchantUser> userList) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "loaded list of merchant users", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetSerialNumberCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetSerialNumberCallbackHandlerImpl.java
new file mode 100644
index 0000000..c7dc10f
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetSerialNumberCallbackHandlerImpl.java
@@ -0,0 +1,103 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.GetSerialNumberCallbackHandler;
+import ru.m4bank.mpos.service.data.dynamic.objects.Reader;
+import ru.m4bank.mpos.service.result.GetSNResult;
+import timber.log.Timber;
+
+public class GetSerialNumberCallbackHandlerImpl implements GetSerialNumberCallbackHandler {
+
+    private final M4BankActivity activity;
+
+    public GetSerialNumberCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onCardReaderForTransactionGettingCompleted() {
+    }
+
+    @Override
+    public void onNoBoundedDevicesFound() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "onNoBoundedDevicesFound", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onConnectingProcessStarted(String s) {
+    }
+
+    @Override
+    public void onDisconnectedEventReceivedOrCanNotEstablishConnection(boolean b, String s) {
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "notAuthorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onDeviceToConnectSelectionRequested(List list) {
+        Timber.d("onDeviceToConnectSelectionRequested");
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setTitle("Choose device");
+
+            Spinner deviceListSpinner = new Spinner(activity);
+            ArrayAdapter<String> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, list);
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            deviceListSpinner.setAdapter(adapter);
+
+            builder.setPositiveButton("OK", (dialog, which) -> {
+                activity.getClientInterface()
+                        .getCardReaderManager()
+                        .setCardReaderToUse((Reader) deviceListSpinner.getSelectedItem());
+                dialog.dismiss();
+            });
+
+            builder.setView(deviceListSpinner);
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onDeviceToUseSelectionRequested(List list) {
+        Timber.d("onDeviceToUseSelectionRequested");
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setTitle("Choose device");
+
+            Spinner deviceListSpinner = new Spinner(activity);
+            ArrayAdapter<Reader> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(list));
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            deviceListSpinner.setAdapter(adapter);
+
+            builder.setPositiveButton("OK", (dialog, which) -> {
+                activity.getClientInterface()
+                        .getCardReaderManager()
+                        .setCardReaderToUse((Reader) deviceListSpinner.getSelectedItem());
+                dialog.dismiss();
+            });
+
+            builder.setView(deviceListSpinner);
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onCompleted(GetSNResult result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getSerialNumber(), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "onWrongApiCalled", Toast.LENGTH_SHORT).show());
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetTransactionDetailsCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetTransactionDetailsCallbackHandlerImpl.java
new file mode 100644
index 0000000..df6c4db
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetTransactionDetailsCallbackHandlerImpl.java
@@ -0,0 +1,84 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.GetTransactionDetailsCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.GetTransactionsListCallbackHandler;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.result.Result;
+
+class GetTransactionDetailsCallbackHandlerImpl implements GetTransactionDetailsCallbackHandler<Result>, GetTransactionsListCallbackHandler<Result> {
+    private final M4BankActivity activity;
+
+    GetTransactionDetailsCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onTransactionDetailsReceived(Transaction transaction) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction details received: " + transaction, Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onSuccessStatusTransaction(Transaction transaction) {
+
+    }
+
+    @Override
+    public void onErrorStatusTransaction() {
+
+    }
+
+    @Override
+    public void onTransactionsListReceived(List<Transaction> transactionList) {
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setTitle("Choose transaction");
+
+            Spinner transactionListSpinner = new Spinner(activity);
+            ArrayAdapter<Transaction> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(transactionList));
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            transactionListSpinner.setAdapter(adapter);
+
+            builder.setPositiveButton("OK", (dialog, which) -> {
+                Transaction transaction = (Transaction) transactionListSpinner.getSelectedItem();
+                activity.getClientInterface()
+                        .getTransactionManager()
+                        .getTransactionDetails(this, transaction.getOperationalDayNumber(), transaction
+                                .getTransactionNumber(), transaction.getMobileTerminalId());
+                dialog.dismiss();
+            });
+
+            builder.setView(transactionListSpinner);
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetTransactionListForRefundCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetTransactionListForRefundCallbackHandlerImpl.java
new file mode 100644
index 0000000..4102074
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/GetTransactionListForRefundCallbackHandlerImpl.java
@@ -0,0 +1,62 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.widget.Toast;
+
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.GetTransactionDetailsCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.GetTransactionsListCallbackHandler;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.result.Result;
+
+class GetTransactionListForRefundCallbackHandlerImpl implements GetTransactionDetailsCallbackHandler<Result>, GetTransactionsListCallbackHandler<Result> {
+    private final M4BankActivity activity;
+    private final CardRefundCallbackHandlerImpl cardRefundCallbackHandler;
+
+    GetTransactionListForRefundCallbackHandlerImpl(M4BankActivity activity, CardRefundCallbackHandlerImpl cardRefundCallbackHandler) {
+        this.cardRefundCallbackHandler = cardRefundCallbackHandler;
+        this.activity = activity;
+    }
+
+    @Override
+    public void onTransactionDetailsReceived(Transaction transaction) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction details received: " + transaction, Toast.LENGTH_SHORT)
+             .show());
+    }
+    
+    @Override
+    public void onSuccessStatusTransaction(Transaction transaction) {
+        
+    }
+    
+    @Override
+    public void onErrorStatusTransaction() {
+        
+    }
+    
+    @Override
+    public void onTransactionsListReceived(List<Transaction> transactionList) {
+        cardRefundCallbackHandler.onTransactionsListReceived(transactionList);
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+             .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/LoadTerminalKeysCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/LoadTerminalKeysCallbackHandlerImpl.java
new file mode 100644
index 0000000..d946372
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/LoadTerminalKeysCallbackHandlerImpl.java
@@ -0,0 +1,133 @@
+package com.example.aman_kassa_flutter.bank;
+
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.LoadTerminalKeysCallbackHandler;
+import ru.m4bank.mpos.service.data.dynamic.objects.Reader;
+import ru.m4bank.mpos.service.data.dynamic.objects.result.ResultCode;
+import ru.m4bank.mpos.service.hardware.network.external.TerminalKeyType;
+import ru.m4bank.mpos.service.result.Result;
+import timber.log.Timber;
+
+class LoadTerminalKeysCallbackHandlerImpl implements LoadTerminalKeysCallbackHandler<Result> {
+
+    private final M4BankActivity activity;
+
+    public LoadTerminalKeysCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void notAuthorized() {
+        Timber.d("Not authorized");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onKeyLoad(TerminalKeyType terminalKeyType, String description, ResultCode resultCode) {
+        Timber.d("key loaded".concat(terminalKeyType.name()));
+    }
+
+    @Override
+    public void onKeyReceived(TerminalKeyType terminalKeyType, String description, ResultCode resultCode) {
+        Timber.d("key loaded".concat(terminalKeyType.name()));
+    }
+
+    @Override
+    public void onError(String description, ResultCode resultCode) {
+        Timber.d("key loaded" + " onError");
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCardReaderForTransactionGettingCompleted() {
+        Timber.d("Reader has been received");
+    }
+
+    @Override
+    public void onDeviceToConnectSelectionRequested(List<String> deviceList) {
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setTitle("Choose device");
+
+            Spinner deviceListSpinner = new Spinner(activity);
+            ArrayAdapter<String> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, deviceList);
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            deviceListSpinner.setAdapter(adapter);
+
+            builder.setPositiveButton("OK", (dialog, which) -> {
+                activity.getClientInterface()
+                        .getCardReaderManager()
+                        .selectCardReader(deviceListSpinner.getSelectedItem().toString());
+                dialog.dismiss();
+            });
+
+            builder.setView(deviceListSpinner);
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onDeviceToUseSelectionRequested(List<Reader> deviceList) {
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setTitle("Choose device");
+
+            Spinner deviceListSpinner = new Spinner(activity);
+            ArrayAdapter<Reader> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(deviceList));
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            deviceListSpinner.setAdapter(adapter);
+
+            builder.setPositiveButton("OK", (dialog, which) -> {
+                activity.getClientInterface()
+                        .getCardReaderManager()
+                        .setCardReaderToUse((Reader) deviceListSpinner.getSelectedItem());
+                dialog.dismiss();
+            });
+
+            builder.setView(deviceListSpinner);
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onNoBoundedDevicesFound() {
+        Timber.d("No bounded readers");
+    }
+
+    @Override
+    public void onConnectingProcessStarted(String deviceName) {
+        Timber.d("onConnectingProcessStarted");
+    }
+
+    @Override
+    public void onDisconnectedEventReceivedOrCanNotEstablishConnection(boolean reconnectAvailable, String description) {
+        if (reconnectAvailable) {
+            activity.runOnUiThread(() -> {
+                AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+                builder.setMessage("Connection to cardreader has been lost, try to reconnect and repeat last operation?");
+                builder.setCancelable(false);
+                builder.setPositiveButton("Yes", (dialog, which) -> activity.getClientInterface().tryToReconnectAndRepeatLast());
+                builder.setNegativeButton("No", (dialog, which) -> activity.getClientInterface().cancel());
+                builder.create().show();
+            });
+        }
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/LogOutCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/LogOutCallbackHandlerImpl.java
new file mode 100644
index 0000000..c9f92e1
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/LogOutCallbackHandlerImpl.java
@@ -0,0 +1,29 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.widget.Toast;
+
+import ru.m4bank.mpos.library.external.authorization.LogOutCallbackHandler;
+import ru.m4bank.mpos.service.result.Result;
+
+public class LogOutCallbackHandlerImpl implements LogOutCallbackHandler {
+    private final M4BankActivity activity;
+
+    public LogOutCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/M4BankActivity.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/M4BankActivity.java
new file mode 100644
index 0000000..58b7885
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/M4BankActivity.java
@@ -0,0 +1,814 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.graphics.BitmapFactory;
+import android.net.wifi.WifiManager;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Handler;
+import android.text.format.Formatter;
+import android.view.View;
+import android.widget.EditText;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+
+import com.example.aman_kassa_flutter.R;
+import com.example.aman_kassa_flutter.bank.builders.SslConfigurationBuilder;
+import com.example.aman_kassa_flutter.bank.gui.SelectDialogCallback;
+import com.example.aman_kassa_flutter.bank.gui.SelectElementDialog;
+import com.example.aman_kassa_flutter.bank.managing.PreferencesManager;
+import com.example.aman_kassa_flutter.bank.permissions.PermissionsManager;
+import com.example.aman_kassa_flutter.bank.permissions.PermissionsManagerImpl;
+
+import org.slf4j.LoggerFactory;
+
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import ch.qos.logback.classic.LoggerContext;
+import ch.qos.logback.classic.android.LogcatAppender;
+import ch.qos.logback.classic.encoder.PatternLayoutEncoder;
+import io.flutter.app.FlutterActivity;
+import ru.m4bank.mpos.library.M4BankMposClient;
+import ru.m4bank.mpos.library.M4BankMposClientInterfaceFacade;
+import ru.m4bank.mpos.library.M4BankMposParameters;
+import ru.m4bank.mpos.library.external.authorization.ActivationCallbackHandler;
+import ru.m4bank.mpos.library.external.authorization.AuthorizationCallbackHandler;
+import ru.m4bank.mpos.library.external.authorization.GetMerchantUsersCallbackHandler;
+import ru.m4bank.mpos.library.external.authorization.LogOutCallbackHandler;
+import ru.m4bank.mpos.library.external.configuration.CheckConnectionCallbackHandler;
+import ru.m4bank.mpos.library.external.configuration.GetLicenseCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.CardReadingCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.CashPaymentCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.EasyCardRefundCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.EasyCashRefundCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.GetSerialNumberCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.GetTransactionDetailsCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.GetTransactionsListCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.LastReversalCardPaymentCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.ResendReceiptCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.ReversalCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.ScanBarCodeCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.XReportCallbackHandler;
+import ru.m4bank.mpos.service.commons.data.ConfigurationSettings;
+import ru.m4bank.mpos.service.commons.data.NetworkConfiguration;
+import ru.m4bank.mpos.service.commons.data.TerminalConfiguration;
+import ru.m4bank.mpos.service.configuration.data.RegisterRequestData;
+import ru.m4bank.mpos.service.data.dictionary.DictionaryCore;
+import ru.m4bank.mpos.service.data.dictionary.LanguageCore;
+import ru.m4bank.mpos.service.data.dictionary.MessageCore;
+import ru.m4bank.mpos.service.data.dynamic.objects.GetOperationType;
+import ru.m4bank.mpos.service.data.dynamic.objects.OperationType;
+import ru.m4bank.mpos.service.data.dynamic.objects.PIDataType;
+import ru.m4bank.mpos.service.data.dynamic.objects.ScanBarCodeScreenDataInput;
+import ru.m4bank.mpos.service.data.dynamic.objects.TransactionFilterData;
+import ru.m4bank.mpos.service.hardware.external.cardreaderlib.data.enums.TransactionTypeConv;
+import ru.m4bank.mpos.service.hardware.network.external.TerminalKeyType;
+import ru.m4bank.mpos.service.hardware.printer.dto.data.PrinterSeries;
+import ru.m4bank.mpos.service.hardware.printer.dto.data.PrintingType;
+import ru.m4bank.mpos.service.hardware.printer.dto.data.enums.SlipType;
+import ru.m4bank.mpos.service.hardware.printer.dto.template.Align;
+import ru.m4bank.mpos.service.hardware.printer.dto.template.BarcodeCheckObject;
+import ru.m4bank.mpos.service.hardware.printer.dto.template.ImageCheckObject;
+import ru.m4bank.mpos.service.hardware.printer.dto.template.PrintingTemplate;
+import ru.m4bank.mpos.service.hardware.printer.dto.template.QRCodeCheckObject;
+import ru.m4bank.mpos.service.hardware.printer.dto.template.StringCheckObject;
+import ru.m4bank.mpos.service.hardware.printer.dto.template.StringSpan;
+import ru.m4bank.mpos.service.hardware.printer.dto.template.TextStyle;
+import ru.m4bank.mpos.service.network.Format;
+import ru.m4bank.mpos.service.network.ServerChoose;
+import ru.m4bank.mpos.service.transactions.data.VirtualPinKeyboardData;
+import ru.m4bank.mpos.service.transactions.data.external.ExternalTemplateData;
+import timber.log.Timber;
+
+
+public class M4BankActivity extends FlutterActivity {
+    private M4BankMposClientInterfaceFacade clientInterface;
+
+    private AuthorizationCallbackHandler authorizationCallbackHandler;
+    private LogOutCallbackHandler logOutCallbackHandler;
+    private CheckConnectionCallbackHandler checkConnectionCallbackHandler;
+    private CardPaymentCallbackHandlerImpl cardPaymentCallbackHandler;
+    private CardReadingCallbackHandler cardReadingCallbackHandler;
+    private CashPaymentCallbackHandler cashPaymentCallbackHandler;
+    private AlipayPaymentCallbackHandlerImpl alipayPaymentCallbackHandler;
+    private EcomPaymentCallbackHandlerImpl ecomPaymentCallbackHandler;
+    private EasyCardRefundCallbackHandler cardRefundCallbackHandler;
+    private EasyCashRefundCallbackHandler easyCashRefundCallbackHandler;
+    private EasyAlipayRefundCallbackHandlerImpl easyAlipayRefundCallbackHandler;
+    private EasyEcomRefundCallbackHandlerImpl easyEcomRefundCallbackHandler;
+    private ReversalCallbackHandler easyReversalCallbackHandler;
+    private GetMerchantUsersCallbackHandler getMerchantUsersCallbackHandler;
+    private ActivationCallbackHandler activationCallbackHandler;
+    private GetLicenseCallbackHandler getLicenseCallbackHandler;
+    private ResendReceiptCallbackHandler resendReceiptCallbackHandler;
+    private GetTransactionDetailsCallbackHandler getTransactionDetailsCallbackHandler;
+    private PrintingCallbackHandlerImpl printingCallbackHandler;
+    private XReportCallbackHandler xReportCallbackHandler;
+    private LastReversalCardPaymentCallbackHandler revertCurrentOperationCallbackHandler;
+    private GetSerialNumberCallbackHandler getSerialNumberCallbackHandler;
+
+    private GetTransactionListForRefundCallbackHandlerImpl getTransactionListForRefundCallbackHandler;
+    private SendRegisterRequestCallbackHandlerImpl sendRegisterRequestCallbackHandler;
+    private EasyCardReversalCallbackHandlerImpl easyCardReversalCallbackHandler;
+    private CloseDayCallbackHandlerImpl closeDayCallbackHandler;
+    private LoadTerminalKeysCallbackHandlerImpl loadTerminalKeysCallbackHandler;
+    private ScanBarCodeCallbackHandler scanBarCodeCallbackHandler;
+
+    public M4BankMposClientInterfaceFacade getClientInterface() {
+        return clientInterface;
+    }
+
+    private LogcatAppender appender;
+
+    private String login;
+    private String password;
+
+    private PermissionsManager permissionsManager;
+
+    public String getLogin() {
+        return login;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        Timber.plant(new Timber.DebugTree());
+        setContentView(R.layout.activity_main);
+        new Handler();
+        PermissionsManager.PermissionsCheckResultHandler permissionsCheckResultHandler =
+                new PermissionsManager.PermissionsCheckResultHandler() {
+                    @Override
+                    public void onPermissionsGranted() {
+                        init();
+                    }
+
+                    @Override
+                    public void onPermissionsDeclined() {
+                        Toast.makeText(M4BankActivity.this,
+                                "Application can work incorrectly caused by missing permissions", Toast.LENGTH_SHORT)
+                             .show();
+                        init();
+                    }
+                };
+        permissionsManager = new PermissionsManagerImpl(this);
+        permissionsManager.checkPermissions(permissionsCheckResultHandler);
+
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[],
+            @NonNull int[] grantResults) {
+        permissionsManager.onRequestPermissionsResult(requestCode, permissions, grantResults);
+    }
+
+    private void init() {
+        LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
+        PatternLayoutEncoder encoder = new PatternLayoutEncoder();
+        encoder.setContext(lc);
+        encoder.setPattern("%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n");
+        encoder.start();
+        appender = new LogcatAppender();
+        appender.setContext(lc);
+        appender.setEncoder(encoder);
+        appender.start();
+
+
+        //слушатель активации
+        activationCallbackHandler = new ActivationCallbackHandlerImpl(this);
+        //слушатель авторизации
+        authorizationCallbackHandler = new AuthorizationCallbackHandlerImpl(this);
+        //слушатель завершения сессии
+        logOutCallbackHandler = new LogOutCallbackHandlerImpl(this);
+        //слушатель проверки коннекта с сервером и получения конфигурационных данных
+        checkConnectionCallbackHandler = new CheckConnectionCallbackHandlerImpl(this);
+        //слушатель получения данных карты
+        cardReadingCallbackHandler = new CardReadingCallbackHandlerImpl(this);
+
+        //слушатели для оплат
+        cardPaymentCallbackHandler = new CardPaymentCallbackHandlerImpl(this);
+        cashPaymentCallbackHandler = new CashPaymentCallbackHandlerImpl(this);
+        alipayPaymentCallbackHandler = new AlipayPaymentCallbackHandlerImpl(this);
+        ecomPaymentCallbackHandler = new EcomPaymentCallbackHandlerImpl(this);
+
+        //слушатели для возвратов
+        cardRefundCallbackHandler = new CardRefundCallbackHandlerImpl(this);
+        getTransactionListForRefundCallbackHandler = new GetTransactionListForRefundCallbackHandlerImpl(this,
+                (CardRefundCallbackHandlerImpl) cardRefundCallbackHandler);
+        easyCashRefundCallbackHandler = new EasyCashRefundCallbackHandlerImpl(this);
+        easyAlipayRefundCallbackHandler = new EasyAlipayRefundCallbackHandlerImpl(this);
+
+        //слушатели для отмен
+        //слушатель для отмены карточной операции без участия ридера
+        easyReversalCallbackHandler = new EasyReversalCallbackHandlerImpl(this);
+        //слушатель для отмены карточной операции с участием ридера
+        easyCardReversalCallbackHandler = new EasyCardReversalCallbackHandlerImpl(this);
+        //слушатель для отмены текущей операции, когда данные по транзакции сохранены в кеше и не производилась очистка или новая операция
+        revertCurrentOperationCallbackHandler = new RevertCurrentOperationCallbackHandlerImpl(this);
+
+        //слушатель для записи на терминал ключей
+        loadTerminalKeysCallbackHandler = new LoadTerminalKeysCallbackHandlerImpl(this);
+
+        //слушатель для получения списка мерчантов
+        getMerchantUsersCallbackHandler = new GetMerchantUsersCallbackHandlerImpl(this);
+        //слушатель поулчения лицензии
+        getLicenseCallbackHandler = new GetLicenseCallbackHandlerImpl(this);
+        //слушатель повторной отправки чека
+        resendReceiptCallbackHandler = new ResendReceiptCallbackHandlerImpl(this);
+        //слушатель получения информации о транзакциях и детальной информации по конкретной операции
+        getTransactionDetailsCallbackHandler = new GetTransactionDetailsCallbackHandlerImpl(this);
+        //заявка на mpos
+        sendRegisterRequestCallbackHandler = new SendRegisterRequestCallbackHandlerImpl(this);
+        //слушатель закрытия опер дня и сверки с сервером
+        closeDayCallbackHandler = new CloseDayCallbackHandlerImpl(this);
+        //слушатели печати
+        printingCallbackHandler = new PrintingCallbackHandlerImpl(this);
+        //слушатель для получения серийного номера
+        getSerialNumberCallbackHandler = new GetSerialNumberCallbackHandlerImpl(this);
+        //слушатель для считывания barcode
+        scanBarCodeCallbackHandler = new ScanBarCodeCallbackHandlerImpl(this);
+
+        initLoginForm();
+
+        initButton(R.id.getSerialNumber, v -> getSerialNumber());
+
+        initButton(R.id.activate, v -> clientInterface.getAuthorizationManager().activate(activationCallbackHandler));
+
+        initButton(R.id.logout,
+                v -> clientInterface.getAuthorizationManager().logOut(logOutCallbackHandler));
+
+        initButton(R.id.checkConnection, v -> clientInterface.getConfigurationManager()
+                                                             .checkConnection(
+                                                                     checkConnectionCallbackHandler));
+
+        initButton(R.id.checkAccess, v -> {
+            String result;
+            if (clientInterface.getConfigurationManager()
+                               .isOperationAllowed(
+                                       OperationType.getByCode(((Spinner) findViewById(R.id.checkAccessSpinner))
+                                               .getSelectedItem()
+                                               .toString()))) {
+                result = "YES";
+            } else {
+                result = "NO";
+            }
+            Toast.makeText(this, result, Toast.LENGTH_SHORT).show();
+        });
+
+        initButton(R.id.getAccesses, v -> {
+            StringBuilder result = new StringBuilder();
+            List<OperationType> availableOperations = clientInterface.getConfigurationManager()
+                                                                     .getAllowedOperationsList();
+            if (!availableOperations.isEmpty()) {
+                for (OperationType o : availableOperations) {
+                    result.append(o.getCode()).append("\n");
+                }
+            } else {
+                result.append("No available operations");
+            }
+            Toast.makeText(this, result.toString(), Toast.LENGTH_SHORT).show();
+        });
+
+        initButton(R.id.getAccessPaymentInstruments, v -> {
+            boolean ecom = clientInterface.getConfigurationManager().isPaymentInstrumentsAllowed(PIDataType.ECOM);
+            boolean alipay =
+                    clientInterface.getConfigurationManager().isPaymentInstrumentsAllowed(PIDataType.ALIPAY_STANDARD);
+            boolean card =
+                    clientInterface.getConfigurationManager().isPaymentInstrumentsAllowed(PIDataType.CARD_STANDART);
+            boolean cash = clientInterface.getConfigurationManager().isPaymentInstrumentsAllowed(PIDataType.CASH);
+        });
+
+        initButton(R.id.cancel, v -> clientInterface.cancel());
+
+        initButton(R.id.getLicense, v -> {
+            clientInterface.cancel();
+            clientInterface.getConfigurationManager().getLicense(getLicenseCallbackHandler);
+        });
+
+        findViewById(R.id.getCommonCardData).setOnClickListener(v -> {
+            clientInterface.cancel();
+            clientInterface.getTransactionManager().getCommonCardData(cardReadingCallbackHandler);
+        });
+
+        //////////// вызовы оплат //////////////
+        initButton(R.id.makeCardPayment, v -> {
+            clientInterface.cancel();
+            cardPaymentCallbackHandler.setTransactionTypeConv(TransactionTypeConv.PAYMENT);
+            clientInterface.getTransactionManager().makeCardPayment(cardPaymentCallbackHandler);
+        });
+
+        initButton(R.id.makeCashPayment, v -> {
+            clientInterface.cancel();
+            clientInterface.getTransactionManager().makeCashPayment(cashPaymentCallbackHandler);
+        });
+
+        initButton(R.id.ecomPayment, v -> {
+            clientInterface.cancel();
+            clientInterface.getTransactionManager().makeEcomPayment(ecomPaymentCallbackHandler);
+        });
+
+        initButton(R.id.makeAlipayPayment,
+                v -> clientInterface.getTransactionManager().makeAlipayPayment(alipayPaymentCallbackHandler));
+
+        //////////// вызов подтверждения платежа и дисконнекта устройств//////////////
+        initButton(R.id.completePayment,
+                v -> clientInterface.getTransactionManager().completeTransaction());
+
+        //////////// вызовы отмен - хостовые терминалы//////////////
+        //////////// вызов отмены текущей транзакции с использованием слушателя оплаты (только во время транзакции)//////////////
+        initButton(R.id.makeReversalLast, v -> {
+            cardPaymentCallbackHandler.setTransactionTypeConv(TransactionTypeConv.CANCEL);
+            clientInterface.getTransactionManager().revertCurrentOperation(revertCurrentOperationCallbackHandler);
+        });
+
+        //////////// вызов отмены текущей транзакции с использованием нового слушателя (только во время транзакции) - хостовые терминалы//////////////
+        initButton(R.id.makeReversalLastWithCallback, v -> clientInterface.getTransactionManager()
+                                                                          .revertCurrentOperation(
+                                                                                  revertCurrentOperationCallbackHandler));
+
+        /////////// вызовы отмены по карте//////////////
+        initButton(R.id.makeEasyCardReversal, v -> {
+            clientInterface.cancel();
+            clientInterface.getTransactionManager()
+                           .getTransactionsList(easyCardReversalCallbackHandler, 20, 0, GetOperationType.SHOW, null);
+        });
+
+        /////////// вызовы отмены на сервере//////////////
+        initButton(R.id.makeEasyReversal, v -> clientInterface.getTransactionManager()
+                                                              .getTransactionsList(
+                                                                      (GetTransactionsListCallbackHandler) easyReversalCallbackHandler,
+                                                                      20, 0, GetOperationType.SHOW,
+                                                                      null));
+
+        //////////// вызовы возвратов //////////////
+        initButton(R.id.makeCardRefund, v -> {
+            clientInterface.cancel();
+            clientInterface.getTransactionManager()
+                           .getTransactionsList(getTransactionListForRefundCallbackHandler, 20, 0,
+                                   GetOperationType.SHOW, null);
+        });
+
+        initButton(R.id.makeCashRefund, v -> {
+            clientInterface.cancel();
+            clientInterface.getTransactionManager()
+                           .getTransactionsList((GetTransactionsListCallbackHandler) easyCashRefundCallbackHandler, 20,
+                                   0, GetOperationType.SHOW, null);
+        });
+
+        initButton(R.id.makeAlipayRefund, v -> clientInterface.getTransactionManager()
+                                                              .getTransactionsList(
+                                                                      (GetTransactionsListCallbackHandler) easyAlipayRefundCallbackHandler,
+                                                                      20, 0, GetOperationType.SHOW,
+                                                                      null));
+
+        //////////// получение списка мерчантов //////////////
+        initButton(R.id.getMerchantUsers, v -> clientInterface.getAuthorizationManager()
+                                                              .getMerchantUsers(getMerchantUsersCallbackHandler, 1000,
+                                                                      0));
+
+        //////////// повторная отправка чека на почту //////////////
+        initButton(R.id.resendReceipt, v -> clientInterface.getTransactionManager()
+                                                           .getTransactionsList(
+                                                                   (GetTransactionsListCallbackHandler) resendReceiptCallbackHandler,
+                                                                   20, 0, GetOperationType.SHOW,
+                                                                   null));
+
+        //////////// получение детальной информации о транзакции //////////////
+        initButton(R.id.getTransactionDetails, v -> clientInterface.getTransactionManager()
+                                                                   .getTransactionsList(
+                                                                           (GetTransactionsListCallbackHandler) getTransactionDetailsCallbackHandler,
+                                                                           20, 0,
+                                                                           GetOperationType.SHOW,
+                                                                           null));
+
+        //////////// получение детальной информации о текущей транзакции//////////////
+        initButton(R.id.getCurrentTransactionDetails,
+                v -> clientInterface.getTransactionManager().getTransactionDetails(false));
+
+        //////////// получение спика транзакций с использованием фильтра //////////////
+        initButton(R.id.getTransactionListFilter, v -> clientInterface.getTransactionManager()
+                                                                      .getTransactionsList(
+                                                                              (GetTransactionsListCallbackHandler) getTransactionDetailsCallbackHandler,
+                                                                              20, 0, GetOperationType.SEARCH,
+                                                                              new TransactionFilterData.Builder().setScanerCode(
+                                                                                      "6354635635736647656").build()));
+
+        //////////// отправка данных для регистрации mpos - дополнительный функционал при активации//////////////
+        findViewById(R.id.sendRegisterRequest).setOnClickListener(v -> {
+            String url = "https://test.ponkratenko.ru";
+            clientInterface.getConfigurationManager()
+                           .sendRegisterRequest(sendRegisterRequestCallbackHandler, getRegisterRequestData(), url);
+        });
+
+        //запись на терминал ключей tmk, tpk
+        findViewById(R.id.writeTerminalKeys).setOnClickListener(v -> {
+            String url = "https://test.ponkratenko.ru";
+            Set keysForDynamicUpdate = new HashSet<TerminalKeyType>() {{
+                add(TerminalKeyType.Tak);
+                add(TerminalKeyType.Tpk);
+            }};
+            clientInterface.getCardReaderManager()
+                           .loadTerminalKeys(new LoadTerminalKeysCallbackHandlerImpl(this), keysForDynamicUpdate);
+        });
+
+        //////////// закрытие смены и сверка с сервером //////////////
+        initButton(R.id.closeDay,
+                v -> clientInterface.getTransactionManager().closeDay(closeDayCallbackHandler));
+
+        //////////// добавление принтера в систему с возможностью печати во время транзакций //////////////
+        initButton(R.id.addPrinter, v -> clientInterface.getPrinterManager()
+                                                        .addNewPrinter(printingCallbackHandler,
+                                                                PrinterSeries.NEW_PRINTER));
+
+        //////////// удаление принтера из системы //////////////
+        initButton(R.id.deletePrinter,
+                v -> clientInterface.getPrinterManager().clearSavedPrinterName());
+
+        initButton(R.id.printFiscal, v -> {
+            clientInterface.cancel();
+            clientInterface.getPrinterManager()
+                           .printFiscalTransactionCheck(printingCallbackHandler, DataCreatorUtils.makeFiscalData());
+        });
+
+        initButton(R.id.printSlipCheck, v -> {
+            clientInterface.cancel();
+            clientInterface.getPrinterManager()
+                           .printFirstSlipTransactionCheck(printingCallbackHandler, DataCreatorUtils.makeSlipData(true),
+                                   SlipType.ERROR);
+        });
+
+        initButton(R.id.printReportX, v1 -> {
+            clientInterface.cancel();
+            clientInterface.getPrinterManager().printReport(printingCallbackHandler, PrintingType.X_REPORT);
+        });
+        initButton(R.id.printReportZ, v2 -> {
+            clientInterface.cancel();
+            clientInterface.getPrinterManager().printReport(printingCallbackHandler, PrintingType.Z_REPORT);
+        });
+        initButton(R.id.printFullReport, v1 -> {
+            clientInterface.cancel();
+            xReportCallbackHandler =
+                    new XReportCallbackHandlerImpl(clientInterface, PrintingType.RECONCILIATION_FULL_REPORT, this);
+            clientInterface.getPrinterManager().xReport(xReportCallbackHandler);
+        });
+        initButton(R.id.printShortReport, v2 -> {
+            clientInterface.cancel();
+            xReportCallbackHandler =
+                    new XReportCallbackHandlerImpl(clientInterface, PrintingType.RECONCILIATION_SHORT_REPORT, this);
+            clientInterface.getPrinterManager().xReport(xReportCallbackHandler);
+        });
+
+        initButton(R.id.printTemplate, v -> {
+            clientInterface.cancel();
+            clientInterface.getPrinterManager().printTemplate(printingCallbackHandler,
+                    new ExternalTemplateData.Builder().printingTemplate(buildPrintingTemplate()).build());
+        });
+
+        initButton(R.id.readBarCode, v2 -> showDialogScanner());
+
+        String savedServerUrl = PreferencesManager.loadStringField(this, PreferencesManager.Field.SERVER_URL,
+                getString(R.string.default_server_address_mpos_5_0_test));
+        String serverUrl;
+        if (savedServerUrl != null) {
+            serverUrl = savedServerUrl;
+        } else {
+            serverUrl = getString(R.string.default_server_address_mpos_5_0_test);
+        }
+        AlertDialog.Builder builder = new AlertDialog.Builder(this);
+        builder.setTitle("Choose server");
+
+        EditText serverAddressForm = new EditText(this);
+        serverAddressForm.setText(serverUrl);
+
+        builder.setView(serverAddressForm);
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            String model1 = Build.MODEL;
+            String brand2 = Build.BRAND;
+            String serverAddress = serverAddressForm.getText().toString();
+            PreferencesManager.saveStringField(M4BankActivity.this, PreferencesManager.Field.SERVER_URL, serverAddress);
+
+            clientInterface = M4BankMposClient.getInstance(
+                    new M4BankMposParameters(
+                            Format.JSON,
+                            "rus",
+                            null,
+                            this,
+                            new SessionExpiringCallbackHandlerImpl(),
+                            "appName",
+                            ServerChoose.API_5_0,
+                            new ConfigurationSettings
+                                    .Builder()
+                                    .printerUsed(true)
+                                    .umkaEnabled(true)
+                                    .networkConfiguration(createNetworkConfiguration(serverAddress))
+                                    .terminalConfiguration(createTerminalConfiguration())
+                                    .build())
+            );
+            dialog.dismiss();
+        });
+
+        builder.create().show();
+
+        //Создание словаря
+        DictionaryCore aisinoDictionary =
+                new DictionaryCore(new HashMap<LanguageCore, HashMap<MessageCore, String>>() {{
+                    put(LanguageCore.English, new HashMap<MessageCore, String>() {{
+                        put(MessageCore.AisinoA90OfflinePin, "Please enter offline PIN");
+                        put(MessageCore.AisinoA90OfflinePinRemain1, "Please enter offline PIN (Last try)");
+                        put(MessageCore.AisinoA90OfflinePinRemain2, "Please enter offline PIN (Remain: 2)");
+                        put(MessageCore.AisinoA90OfflinePinRemain3, "Please enter offline PIN (Remain: 3)");
+                        put(MessageCore.AisinoA90OfflinePinRemain4, "Please enter offline PIN (Remain: 4)");
+                        put(MessageCore.AisinoA90OnlinePin, "Please enter online PIN");
+                        put(MessageCore.AisinoA90CompletingTransaction, "");
+                        put(MessageCore.AisinoA90ContactlessMessage, "Please tap card");
+                        put(MessageCore.AisinoA90ContactMessage, "Please insert card");
+                        put(MessageCore.AisinoA90ReadSuccess, "PROCESSING");
+                        put(MessageCore.AisinoA90InputPWD, "enter pin");
+                        put(MessageCore.AisinoA90DefaultBottomButtonsText, "Cancel Clear Done");
+                        put(MessageCore.AisinoPinpadCompleted, "COMPLETED");
+                        put(MessageCore.AisinoPinpadDeclined, "DECLINED");
+                        put(MessageCore.AisinoPinpadAmountHint, "");
+                        put(MessageCore.KztCurrency, "KZT");
+                        put(MessageCore.BynCurrency, "BYN");
+                        put(MessageCore.EurCurrency, "EUR");
+                        put(MessageCore.GelCurrency, "GEL");
+                        put(MessageCore.JpyCurrency, "JPY");
+                        put(MessageCore.KwdCurrency, "KWD");
+                        put(MessageCore.RubCurrency, "RUB");
+                        put(MessageCore.UsdCurrency, "USD");
+                        put(MessageCore.AisinoPinpadScanning, "Text for test");
+                        put(MessageCore.AisinoPinpadScanningCompleted, "Success for test");
+                    }});
+                    put(LanguageCore.Russian, new HashMap<MessageCore, String>() {{
+                        put(MessageCore.AisinoA90OfflinePin, "Введите ПИН");
+                        put(MessageCore.AisinoA90OfflinePinRemain1, "ПИН (Последняя попытка)");
+                        put(MessageCore.AisinoA90OfflinePinRemain2, "ПИН (Осталось попыток: 2)");
+                        put(MessageCore.AisinoA90OfflinePinRemain3, "ПИН (Осталось попыток: 3)");
+                        put(MessageCore.AisinoA90OfflinePinRemain4, "ПИН (Осталось попыток: 4)");
+                        put(MessageCore.AisinoA90OnlinePin, "Введите ПИН");
+                        put(MessageCore.AisinoA90CompletingTransaction, "");
+                        put(MessageCore.AisinoA90ContactlessMessage, "Предъявите карту");
+                        put(MessageCore.AisinoA90ContactMessage, "Предъявите карту");
+                        put(MessageCore.AisinoA90ReadSuccess, "ОБРАБОТКА");
+                        put(MessageCore.AisinoA90InputPWD, "введите пин");
+                        put(MessageCore.AisinoA90DefaultBottomButtonsText, "Отмена Очистить Готово");
+                        put(MessageCore.AisinoPinpadCompleted, "ОДОБРЕНО");
+                        put(MessageCore.AisinoPinpadDeclined, "ОТКЛОНЕНО");
+                        put(MessageCore.AisinoPinpadAmountHint, "");
+                        put(MessageCore.KztCurrency, "KZT");
+                        put(MessageCore.BynCurrency, "BYN");
+                        put(MessageCore.EurCurrency, "EUR");
+                        put(MessageCore.GelCurrency, "GEL");
+                        put(MessageCore.JpyCurrency, "JPY");
+                        put(MessageCore.KwdCurrency, "KWD");
+                        put(MessageCore.RubCurrency, "RUB");
+                        put(MessageCore.UsdCurrency, "USD");
+                        put(MessageCore.AisinoPinpadScanning, "Скан...");
+                        put(MessageCore.AisinoPinpadScanningCompleted, "Успешно");
+                    }});
+                }});
+
+        //обновление словаря в библиотеке ридера
+        initButton(R.id.updateDictionary, v -> updateDictionary(aisinoDictionary));
+    }
+
+    private void initButton(int id, View.OnClickListener onClickListener) {
+        findViewById(id).setOnClickListener(onClickListener);
+    }
+
+    private void initLoginForm() {
+        EditText loginField = findViewById(R.id.login);
+        EditText passwordField = findViewById(R.id.password);
+        loginField.setText(
+                PreferencesManager.loadStringField(M4BankActivity.this, PreferencesManager.Field.LOGIN, login));
+        passwordField.setText(
+                PreferencesManager.loadStringField(M4BankActivity.this, PreferencesManager.Field.PASSWORD, password));
+        initButton(R.id.authorize, v -> {
+            login = loginField.getText().toString();
+            password = passwordField.getText().toString();
+            PreferencesManager.saveStringField(M4BankActivity.this, PreferencesManager.Field.LOGIN, login);
+            PreferencesManager.saveStringField(M4BankActivity.this, PreferencesManager.Field.PASSWORD, password);
+            clientInterface.getAuthorizationManager().authorize(authorizationCallbackHandler);
+        });
+    }
+
+    private TerminalConfiguration createTerminalConfiguration() {
+        return new TerminalConfiguration.Builder()
+                .energySaverModeTime(150)
+                .pinLengthsArray(new byte[]{4, 6})
+                .shutDownModeTime(300)
+                .build();
+    }
+
+    private NetworkConfiguration createNetworkConfiguration(String serverUrl) {
+        return new NetworkConfiguration.Builder()
+                .sslConfiguration(SslConfigurationBuilder.buildAllTrustConfiguration(serverUrl))
+                .serverUrl(serverUrl)
+                .build();
+    }
+
+    private void showDialogScanner() {
+        String[] listItems = {"custom", "default"};
+        AlertDialog.Builder builder = new AlertDialog.Builder(M4BankActivity.this);
+        builder.setTitle("Choose scanner:");
+        builder.setItems(listItems, (dialog, which) -> showScanner(which));
+        AlertDialog dialog = builder.create();
+        dialog.show();
+    }
+
+    private void showScanner(int which) {
+        boolean isCustom;
+        if (which == 0) {
+            isCustom = true;
+        } else {
+            isCustom = false;
+        }
+        clientInterface.getCardReaderManager().scanBarCode(scanBarCodeCallbackHandler,
+                new ScanBarCodeScreenDataInput.Builder()
+                        .setShowCustom(isCustom)
+                        .setShowNextButton("true")
+                        .setNextButtonText("Next button")
+                        .setNextButtonTextColor("#999888")
+                        .setNextButtonTextSize("20")
+                        .setTitleBarText("Qr Scanner")
+                        .setTitleTextSize("20")
+                        .setTitleTextColor("#123456")
+                        .setTitleColor("#987123")
+                        .setDescriptionText("Описание")
+                        .setDescriptionTextColor("#564637")
+                        .setDescriptionTextSize("20")
+                        .setScanHeight("200")
+                        .setScanWidth("600")
+                        .setSummText("2000")
+                        .setSummColor("#666777")
+                        .setSummSize("20")
+                        .build());
+    }
+
+    private void updateDictionary(DictionaryCore dictionaryCore) {
+        clientInterface.getConfigurationManager().updateDictionary(dictionaryCore);
+    }
+
+    private void getSerialNumber() {
+        clientInterface.getCardReaderManager().getCardReaderSerialNumber(getSerialNumberCallbackHandler);
+    }
+
+    @Override
+    protected void onStart() {
+        super.onStart();
+        //
+        //        ((EditText) findViewById(R.id.code)).setText("roam");
+        ////        ((EditText) findViewById(R.id.code)).setText("201");
+        //        ((EditText) findViewById(R.id.pin)).setText("1111");
+        ////        ((EditText) findViewById(R.id.login)).setText("61");
+        ////        ((EditText) findViewById(R.id.login)).setText("test2");
+        ////        ((EditText) findViewById(R.id.login)).setText("dm@centercorptech.net");
+        //        ((EditText) findViewById(R.id.login)).setText("ap@m4bank.com");
+        ////        ((EditText) findViewById(R.id.password)).setText("qwer");
+        //        ((EditText) findViewById(R.id.password)).setText("1111");
+        ////        ((EditText) findViewById(R.id.password)).setText("1111");
+    }
+
+    @Override
+    protected void onDestroy() {
+        Timber.d("Shutdown");
+        if (clientInterface != null) {
+            clientInterface.shutdown();
+        }
+        super.onDestroy();
+    }
+
+    private RegisterRequestData getRegisterRequestData() {
+        String code = "1" + (int) (Math.random() * 1000) + "" + (int) (Math.random() * 1000) + "" +
+                      (int) (Math.random() * 1000);
+        String date = new SimpleDateFormat("yyyy-MM-dd H:m:s").format(new Date());
+        String acquiringType = "mPOS";
+        String ip = "169.254.10.10";
+        try {
+            WifiManager wm = (WifiManager) getApplicationContext().getSystemService(WIFI_SERVICE);
+            ip = Formatter.formatIpAddress(wm.getConnectionInfo().getIpAddress());
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        RegisterRequestData result = new RegisterRequestData(code, date, acquiringType, ip);
+
+        result.setWebSite("http://fgfdgsfgsd.ru");
+        result.setRegion("г. Москва");
+        result.setCity("Moscow");
+        result.setOrganizationName("AlexCorp");
+        result.setInn("5785678");
+        result.setIndustry("dghdfgh");
+        result.setCellPointsCount("44");
+        result.setContactName("Alex");
+        result.setEmail("Alex@alex.com");
+        result.setPhone("+79859999999");
+        result.setUsingCard(true);
+        result.setAgreement(true);
+
+        return result;
+    }
+
+    public long getAmount() {
+        long amount;
+        try {
+            amount = Long.parseLong(((EditText) findViewById(R.id.amountField)).getText().toString());
+        } catch (Exception any) {
+            amount = 1;
+        }
+        return amount;
+    }
+
+    public HashMap<String, Object> getStyle(String style) {
+
+        HashMap<String, Object> style1 = new HashMap<>();
+        style1.put("TitleBackGroundColor", "#DB3F34");
+        style1.put("VirtualPinPadStyle", 6);
+        style1.put("PatternForAmountAndCurrency", "%s $");
+        style1.put("setBottomBtnText", new String[]{"Cancel", "Clear", "Done"});
+
+        HashMap<String, Object> style2 = new HashMap<>();
+        style2.put("TitleBackGroundColor", "#909090");
+        style2.put("VirtualPinPadStyle", 7);
+        style2.put("PatternForAmountAndCurrency", "$ %s");
+        style2.put("setBottomBtnText", new String[]{"Отмена", "Очистить", "Готово"});
+        style2.put("amountTextSize", 32);
+        style2.put("amountTextColor", "#333111");
+        style2.put("amountTextFont", "sans_serif_bold_italic");
+        style2.put("messageTextSize", 18);
+        style2.put("messageTextColor", "#333aaa");
+        style2.put("messageTextFont", "sans_serif_bold_italic");
+        style2.put("keyboardNumbersTextColor", "#111ccc");
+        style2.put("keyboardNumbersTextSize", 24);
+        style2.put("keyboardNumbersTextFont", "sans_serif_bold_italic");
+        style2.put("bottomButtonsTextSize", 14);
+        style2.put("bottomButtonsTextColor", "#ccc666");
+        style2.put("bottomButtonsTextFont", "sans_serif_bold_italic");
+
+        switch (style) {
+            case "Style 1":
+                return style1;
+            case "Style 2":
+                return style2;
+            default:
+                return style1;
+        }
+    }
+
+    public void showSelectStyleDialog(CardPaymentCallbackHandlerImpl.SelectStyleListener selectStyleListener) {
+        ArrayList<String> styles = new ArrayList<>();
+        styles.add("Style 1");
+        styles.add("Style 2");
+        runOnUiThread(() ->
+                new SelectElementDialog<>(M4BankActivity.this, styles, new SelectDialogCallback<String>() {
+                    @Override
+                    public void onElementSelected(String element) {
+                        VirtualPinKeyboardData virtualPinKeyboardData =
+                                new VirtualPinKeyboardData.Builder(getStyle(element)).build();
+                        selectStyleListener.onSelectStyle(virtualPinKeyboardData);
+                    }
+
+                    @Override
+                    public void onCancelSelection() {
+
+                    }
+                }).show()
+        );
+    }
+
+    private PrintingTemplate buildPrintingTemplate() {
+        return new PrintingTemplate.Builder()
+                .append(new BarcodeCheckObject(Align.Center, 100, 300, true, "Hello kitty"))
+                .append(new StringCheckObject(new StringSpan.Builder("Test short simple string").build()))
+                .append(new StringCheckObject(new StringSpan.Builder(
+                        "Test long simple string. It's a pretty long string for being more that check with.").build()))
+                .append(new StringCheckObject(new StringSpan.Builder("Test short italic center string.")
+                        .alignment(Align.Center)
+                        .textStyle(TextStyle.Italic)
+                        .build()))
+                .append(new StringCheckObject(new StringSpan.Builder("Test bold italic right large font string.")
+                        .alignment(Align.Right)
+                        .fontSize(30)
+                        .textStyle(TextStyle.ItalicBold)
+                        .build()))
+                .append(new StringCheckObject(new StringSpan.Builder("Test gray left small string.")
+                        .graylevel(5)
+                        .fontSize(15)
+                        .build()))
+                .append(new QRCodeCheckObject(Align.Center, 100, "Hello kitty"))
+                .append(new ImageCheckObject(
+                        BitmapFactory.decodeResource(getResources(), android.R.drawable.ic_menu_call)))
+                .build();
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/PrintingCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/PrintingCallbackHandlerImpl.java
new file mode 100644
index 0000000..3054e56
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/PrintingCallbackHandlerImpl.java
@@ -0,0 +1,77 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.widget.Toast;
+
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.PrintingCallbackHandler;
+import ru.m4bank.mpos.service.data.FiscalStatusData;
+import ru.m4bank.mpos.service.data.PrinterBaseData;
+import ru.m4bank.mpos.service.data.PrinterErrorData;
+import ru.m4bank.mpos.service.hardware.printer.dto.data.PrintingType;
+import ru.m4bank.mpos.service.result.PrinterResult;
+import ru.m4bank.mpos.service.result.Result;
+import timber.log.Timber;
+
+public class PrintingCallbackHandlerImpl implements PrintingCallbackHandler<Result, PrinterResult<PrinterErrorData, PrinterBaseData>> {
+
+    private final M4BankActivity activity;
+
+    public PrintingCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onRequestedReportZ() {
+        Timber.i("onRequestedReportZ");
+        activity.getClientInterface().getPrinterManager().printReport(this, PrintingType.Z_REPORT);
+    }
+
+    @Override
+    public void onCompletedPrinting(PrinterResult printerResult) {
+        Timber.i("onCompletedPrinting = " + printerResult);
+        activity.runOnUiThread(() -> Toast.makeText(activity, "onCompletedPrinting = " + printerResult, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onStatusFiscalModule(FiscalStatusData fiscalStatusData) {
+
+    }
+
+    @Override
+    public void onPrinterForRegistrationGettingCompleted() {
+        Timber.i("onPrinterForRegistrationGettingCompleted");
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Saved printer - " + activity.getClientInterface().getPrinterManager().isSavedPrinterName(), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onNoBoundedPrinterFound() {
+        Timber.i("onNoBoundedPrinterFound");
+    }
+
+    @Override
+    public void onPrinterToUseSelectionRequested(List printerList) {
+        Timber.i("printerList = " + printerList);
+        activity.getClientInterface().getPrinterManager().selectPrinter(printerList.get(0).toString());
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        Timber.i("onCompleted = " + result.getResultType().toString());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        Timber.i("onWrongApiCalled");
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        Timber.i("onRepeat");
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ReconciliationPrinterDataBuilder.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ReconciliationPrinterDataBuilder.java
new file mode 100644
index 0000000..3590dd6
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ReconciliationPrinterDataBuilder.java
@@ -0,0 +1,73 @@
+package com.example.aman_kassa_flutter.bank;
+
+import java.util.ArrayList;
+import java.util.List;
+import ru.m4bank.mpos.service.data.dynamic.objects.CurrencyEnum;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.hardware.printer.dto.data.ReconciliationData;
+import ru.m4bank.mpos.service.hardware.printer.dto.data.ReconciliationOperationData;
+import ru.m4bank.mpos.service.hardware.printer.dto.data.TransactionType;
+import ru.m4bank.mpos.service.transactions.data.TransactionMoneyInteractionType;
+
+
+public class ReconciliationPrinterDataBuilder {
+
+    public ReconciliationData build(List<Transaction> transactionList, boolean closeDay) {
+        ArrayList<ReconciliationOperationData> reconciliationOperationDataList = new ArrayList<ReconciliationOperationData>();
+        if (transactionList == null) return null;
+        for (Transaction transaction : transactionList) {
+            if (!isErrorStatus(transaction)) {
+                reconciliationOperationDataList.add(buildOneElement(transaction));
+            }
+        }
+        return new ReconciliationData(reconciliationOperationDataList, closeDay);
+    }
+
+    private ReconciliationOperationData buildOneElement(Transaction transaction) {
+        return new ReconciliationOperationData.Builder(
+                transaction.getAmount(),
+                transaction.getMaskedPan(),
+                CurrencyEnum.getCurrencyEnum(Integer.parseInt(transaction.getCurrency3DigitCode())),
+                getPrinterOperationType(transaction.getTransactionType()),
+                transaction.getExternalTerminalId(), transaction.getPiDataType().getTypePIData().equals(TransactionMoneyInteractionType.CASH.toString()))
+                .cardType(transaction.getCardType())
+                .date(transaction.getTransactionDate())
+                .checkId(transaction.getCheck())
+                .externalMerchantId(transaction.getExternalMerchantId())
+                .externalMerchantName(transaction.getExternalMerchantName())
+                .externalMerchantAdress(transaction.getExternalMerchantAddress())
+                .authorizationCode(transaction.getAuthorizationCode())
+                .refNumber(transaction.getRrn())
+                .time(transaction.getTransactionTime())
+                .build();
+    }
+
+    private TransactionType getPrinterOperationType(String type) {
+        if (type == null) return null;
+        switch (type.toUpperCase()) {
+            case "PAYMENT":
+                return TransactionType.INCOMING;
+            case "REFUND":
+                return TransactionType.INCOMING_REFUND;
+            case "REVERSAL":
+                return TransactionType.REVERSAL;
+        }
+        return null;
+    }
+
+    public static boolean isErrorStatus(Transaction transaction) {
+        if (transaction == null || transaction.getOperationStatus() == null) {
+            return true;
+        }
+
+        switch (transaction.getOperationStatus()) {
+            case COMPLETED:
+            case REVERSED:
+            case READER_TIMEOUT:
+                return false;
+
+            default:
+                return true;
+        }
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ResendReceiptCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ResendReceiptCallbackHandlerImpl.java
new file mode 100644
index 0000000..8f9bbbe
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ResendReceiptCallbackHandlerImpl.java
@@ -0,0 +1,64 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.GetTransactionsListCallbackHandler;
+import ru.m4bank.mpos.library.external.transactions.ResendReceiptCallbackHandler;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.result.Result;
+
+class ResendReceiptCallbackHandlerImpl implements ResendReceiptCallbackHandler<Result>,
+        GetTransactionsListCallbackHandler<Result> {
+    private final M4BankActivity activity;
+
+    ResendReceiptCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionsListReceived(List<Transaction> transactionList) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("Choose transaction");
+
+        Spinner transactionListSpinner = new Spinner(activity);
+        ArrayAdapter<Transaction> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(transactionList));
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        transactionListSpinner.setAdapter(adapter);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            Transaction transaction = (Transaction) transactionListSpinner.getSelectedItem();
+            activity.getClientInterface().getTransactionManager().resendReceipt(this, transaction, "vsa@centercorptech.net", null);
+            dialog.dismiss();
+        });
+
+        builder.setView(transactionListSpinner);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ReversalCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ReversalCallbackHandlerImpl.java
new file mode 100644
index 0000000..2f1aeb9
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ReversalCallbackHandlerImpl.java
@@ -0,0 +1,154 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.ReversalCallbackHandler;
+import ru.m4bank.mpos.service.data.FiscalStatusData;
+import ru.m4bank.mpos.service.data.PrinterBaseData;
+import ru.m4bank.mpos.service.data.PrinterErrorData;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.hardware.error.ErrorHandler;
+import ru.m4bank.mpos.service.result.PrinterResult;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.TransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionExecutionStatus;
+import ru.m4bank.mpos.service.transactions.data.error.TransactionErrorData;
+
+public class ReversalCallbackHandlerImpl implements ReversalCallbackHandler<Result> {
+
+    private final M4BankActivity activity;
+
+    public ReversalCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onTransactionSelectionRequested(List<Transaction> transactionList) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("Choose transaction");
+
+        Spinner transactionListSpinner = new Spinner(activity);
+        ArrayAdapter<Transaction> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(transactionList));
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        transactionListSpinner.setAdapter(adapter);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            activity.getClientInterface().getTransactionManager().selectTransaction((Transaction) transactionListSpinner.getSelectedItem());
+            dialog.dismiss();
+        });
+
+        builder.setView(transactionListSpinner);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+    @Override
+    public void onCardShortPanRequested() {
+        activity.getClientInterface().getTransactionManager().setCardShortPan("0069", 20, 0);
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onTransactionInit() {
+
+    }
+
+
+
+    @Override
+    public void onTransactionExecutionStatusChanged(TransactionExecutionStatus newStatus) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, newStatus.name(), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onError(ErrorHandler errorHandler, TransactionErrorData transactionErrorData) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, errorHandler.getFinalDescription(), Toast.LENGTH_LONG).show());
+    }
+
+    @Override
+    public void onErrorWithPossibilityToRetry(ErrorHandler errorHandler) {
+
+    }
+
+    @Override
+    public void onTransactionDataReceivedError(TransactionData data) {
+
+    }
+
+    @Override
+    public void onUserInformationRequested(boolean signNeeded) {
+        activity.getClientInterface().getTransactionManager().sendTransactionUserData(null, "phone", "email");
+    }
+
+    @Override
+    public void onTransactionDataReceived(TransactionData data) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Transaction data has been received", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void onTransactionCompleted() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Operation has been successfully completed", Toast.LENGTH_LONG)
+                .show());
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Repeat attempt number " + attemptNumber, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onSelectTransaction() {
+
+    }
+
+    @Override
+    public void onRequestedReportZ() {
+
+    }
+
+    @Override
+    public void onCompletedPrinting(PrinterResult<PrinterErrorData, PrinterBaseData> printerErrorDataPrinterBaseDataPrinterResult) {
+
+    }
+
+    @Override
+    public void onStatusFiscalModule(FiscalStatusData fiscalStatusData) {
+
+    }
+
+    @Override
+    public void onPrinterForRegistrationGettingCompleted() {
+
+    }
+
+    @Override
+    public void onNoBoundedPrinterFound() {
+
+    }
+
+    @Override
+    public void onPrinterToUseSelectionRequested(List<String> list) {
+
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/RevertCurrentOperationCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/RevertCurrentOperationCallbackHandlerImpl.java
new file mode 100644
index 0000000..f03286d
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/RevertCurrentOperationCallbackHandlerImpl.java
@@ -0,0 +1,309 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.app.AlertDialog;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.LastReversalCardPaymentCallbackHandler;
+import ru.m4bank.mpos.service.commons.data.ResultType;
+import ru.m4bank.mpos.service.data.FiscalStatusData;
+import ru.m4bank.mpos.service.data.dynamic.objects.Reader;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.data.dynamic.objects.result.ResultCode;
+import ru.m4bank.mpos.service.hardware.error.ErrorHandler;
+import ru.m4bank.mpos.service.hardware.external.cardreaderlib.data.enums.VirtualKeyboardStyleTypeConv;
+import ru.m4bank.mpos.service.result.PrinterResult;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.MessageButtonData;
+import ru.m4bank.mpos.service.transactions.data.TransactionData;
+import ru.m4bank.mpos.service.transactions.data.TransactionExecutionStatus;
+import ru.m4bank.mpos.service.transactions.data.error.TransactionErrorData;
+import ru.m4bank.mpos.service.transactions.dto.OnlineCardDataDto;
+import timber.log.Timber;
+
+public class RevertCurrentOperationCallbackHandlerImpl implements LastReversalCardPaymentCallbackHandler<Result> {
+
+    private final M4BankActivity activity;
+
+    public RevertCurrentOperationCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT)
+                .show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCardReaderForTransactionGettingCompleted() {
+
+    }
+
+    @Override
+    public void onNoBoundedDevicesFound() {
+
+    }
+
+    @Override
+    public void onConnectingProcessStarted(String deviceName) {
+
+    }
+
+    @Override
+    public void onDisconnectedEventReceivedOrCanNotEstablishConnection(boolean reconnectAvailable, String description) {
+        if (reconnectAvailable) {
+            activity.runOnUiThread(() -> {
+                AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+                builder.setMessage("Connection to cardreader has been lost, try to reconnect and repeat last operation?");
+                builder.setCancelable(false);
+                builder.setPositiveButton("Yes", (dialog, which) -> activity.getClientInterface().tryToReconnectAndRepeatLast());
+                builder.setNegativeButton("No", (dialog, which) -> activity.getClientInterface().cancel());
+                builder.create().show();
+            });
+        }
+    }
+
+    @Override
+    public void onDeviceToConnectSelectionRequested(List deviceList) {
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setTitle("Choose device");
+
+            Spinner deviceListSpinner = new Spinner(activity);
+            ArrayAdapter<String> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, deviceList);
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            deviceListSpinner.setAdapter(adapter);
+
+            builder.setPositiveButton("OK", (dialog, which) -> {
+                activity.getClientInterface()
+                        .getTransactionManager()
+                        .selectCardReader(deviceListSpinner.getSelectedItem().toString());
+                dialog.dismiss();
+            });
+
+            builder.setView(deviceListSpinner);
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onWorkFlowDataRequested() {
+
+    }
+
+    @Override
+    public void onReceiveCardData(OnlineCardDataDto data, boolean shouldConfirmBeManuallyCalled) {
+
+    }
+
+    @Override
+    public void onRequiredReversal(String description, ResultCode resultCode) {
+
+    }
+
+    @Override
+    public void onRequiredApplicationSelection(List applicationOfList) {
+
+    }
+
+    @Override
+    public void onPrinterForRegistrationGettingCompleted() {
+
+    }
+
+    @Override
+    public void onNoBoundedPrinterFound() {
+
+    }
+
+    @Override
+    public void onTransactionDetailsReceived(Transaction transaction) {
+
+    }
+
+    @Override
+    public void onSuccessStatusTransaction(Transaction transaction) {
+
+    }
+
+    @Override
+    public void onErrorStatusTransaction() {
+
+    }
+
+    @Override
+    public void onRequestedReportZ() {
+
+    }
+
+    @Override
+    public void onCompletedPrinting(PrinterResult printerResult) {
+
+    }
+
+    @Override
+    public void onStatusFiscalModule(FiscalStatusData fiscalStatusData) {
+
+    }
+
+    @Override
+    public void onReconciliationRequiredToProcess() {
+        Timber.d("Reconciliation required!!!");
+        activity.getClientInterface().getTransactionManager().makeReconciliationDuringTransaction();
+    }
+
+    @Override
+    public void onReconciliationCompleted(Result result) {
+        Timber.d("Reconciliation completed!!!");
+        if (result.getResultType() == ResultType.SUCCESSFUL) {
+            activity.getClientInterface().getTransactionManager().continueTransactionAfterReconciliation();
+        } else {
+            activity.runOnUiThread(() -> Toast.makeText(activity, "Reconciliation failed " + (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_LONG)
+                    .show());
+        }
+    }
+
+    @Override
+    public void onRepeat(int attemptNumber) {
+
+    }
+
+    @Override
+    public void onTransactionAmountRequested() {
+
+    }
+
+    @Override
+    public void onTransactionDataRequested() {
+
+    }
+
+    @Override
+    public void onDeviceToUseSelectionRequested(List deviceList) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+        builder.setTitle("Choose device");
+
+        Spinner deviceListSpinner = new Spinner(activity);
+        ArrayAdapter<Reader> adapter = new ArrayAdapter<>(activity, android.R.layout.simple_spinner_item, new ArrayList<>(deviceList));
+        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        deviceListSpinner.setAdapter(adapter);
+
+        builder.setPositiveButton("OK", (dialog, which) -> {
+            activity.getClientInterface()
+                    .getTransactionManager()
+                    .setCardReaderToUse((Reader) deviceListSpinner.getSelectedItem());
+            dialog.dismiss();
+        });
+
+        builder.setView(deviceListSpinner);
+        activity.runOnUiThread(() -> builder.create().show());
+    }
+
+    @Override
+    public void onPrinterToUseSelectionRequested(List printerList) {
+
+    }
+
+    @Override
+    public void onTransactionInit() {
+
+    }
+
+
+    @Override
+    public void onTransactionExecutionStatusChanged(TransactionExecutionStatus newStatus) {
+
+    }
+
+    @Override
+    public void onUserInformationRequested(boolean signNeeded) {
+
+    }
+
+    @Override
+    public void onError(ErrorHandler errorHandler, TransactionErrorData transactionErrorData) {
+
+    }
+
+    @Override
+    public void onErrorWithPossibilityToRetry(ErrorHandler errorHandler) {
+        activity.getClientInterface().getTransactionManager().tryToRepeatExecuteLastRequestInTransaction();
+    }
+
+    @Override
+    public void onTransactionDataReceivedError(TransactionData data) {
+
+    }
+
+    @Override
+    public void onTransactionDataReceived(TransactionData data) {
+
+    }
+
+    @Override
+    public void onTransactionCompleted() {
+
+    }
+
+    @Override
+    public void onReconnectNeededToProcess() {
+        activity.runOnUiThread(() -> {
+            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
+            builder.setMessage("Connection to cardreader has been lost, try to reconnect and continue?");
+            builder.setCancelable(false);
+            builder.setPositiveButton("Yes", (dialog, which) -> activity.getClientInterface().getTransactionManager().tryToReconnectToCardReader());
+            builder.setNegativeButton("No", (dialog, which) -> activity.getClientInterface().cancel());
+            builder.create().show();
+        });
+    }
+
+    @Override
+    public void onWrongTerminal() {
+
+    }
+
+    @Override
+    public void onActivityUpdateUiThread() {
+
+    }
+
+    @Override
+    public void onCreatePinPadButtons() {
+
+    }
+
+    @Override
+    public void onShowPinPadKeyBoard(MessageButtonData messageButtonData) {
+
+    }
+
+    @Override
+    public void onUpdateElementPin(int i) {
+
+    }
+
+    @Override
+    public void onCloseKeyboard() {
+
+    }
+
+    @Override
+    public void onRequiredAdditionalVirtualKeyboardSettings(VirtualKeyboardStyleTypeConv virtualKeyboardStyleTypeConv) {
+
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ScanBarCodeCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ScanBarCodeCallbackHandlerImpl.java
new file mode 100644
index 0000000..ead4007
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/ScanBarCodeCallbackHandlerImpl.java
@@ -0,0 +1,72 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.widget.Toast;
+
+import java.util.List;
+
+import ru.m4bank.mpos.library.external.transactions.ScanBarCodeCallbackHandler;
+import ru.m4bank.mpos.service.result.Result;
+
+public class ScanBarCodeCallbackHandlerImpl implements ScanBarCodeCallbackHandler {
+
+    private final M4BankActivity activity;
+
+    public ScanBarCodeCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onCompleteBarCode(String result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onError(String result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result, Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCardReaderForTransactionGettingCompleted() {
+
+    }
+
+    @Override
+    public void onNoBoundedDevicesFound() {
+
+    }
+
+    @Override
+    public void onConnectingProcessStarted(String s) {
+
+    }
+
+    @Override
+    public void onDisconnectedEventReceivedOrCanNotEstablishConnection(boolean b, String s) {
+
+    }
+
+    @Override
+    public void onDeviceToUseSelectionRequested(List list) {
+
+    }
+
+    @Override
+    public void notAuthorized() {
+
+    }
+
+    @Override
+    public void onDeviceToConnectSelectionRequested(List list) {
+
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, (result.getDescription() == null ? "" : result.getDescription()), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/SendRegisterRequestCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/SendRegisterRequestCallbackHandlerImpl.java
new file mode 100644
index 0000000..c77cac3
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/SendRegisterRequestCallbackHandlerImpl.java
@@ -0,0 +1,24 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.widget.Toast;
+
+import ru.m4bank.mpos.library.external.configuration.SendRegisterRequestCallbackHandler;
+import ru.m4bank.mpos.service.result.SendRegisterRequestExternalResult;
+
+public class SendRegisterRequestCallbackHandlerImpl implements SendRegisterRequestCallbackHandler {
+    private final M4BankActivity activity;
+
+    public SendRegisterRequestCallbackHandlerImpl(M4BankActivity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void onCompleted(SendRegisterRequestExternalResult result) {
+        activity.runOnUiThread(() -> Toast.makeText(activity, result.getResultType() + " " + result.getRequestCode() + " " + result.getStatus(), Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/SessionExpiringCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/SessionExpiringCallbackHandlerImpl.java
new file mode 100644
index 0000000..e4d5c83
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/SessionExpiringCallbackHandlerImpl.java
@@ -0,0 +1,11 @@
+package com.example.aman_kassa_flutter.bank;
+
+import ru.m4bank.mpos.library.external.SessionExpiringCallbackHandler;
+import timber.log.Timber;
+
+public class SessionExpiringCallbackHandlerImpl implements SessionExpiringCallbackHandler {
+    @Override
+    public void onSessionExpired() {
+        Timber.w("SESSION EXPIRED!");
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/TerminalKeyTypeMpos.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/TerminalKeyTypeMpos.java
new file mode 100644
index 0000000..5e97234
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/TerminalKeyTypeMpos.java
@@ -0,0 +1,5 @@
+package com.example.aman_kassa_flutter.bank;
+
+public enum TerminalKeyTypeMpos {
+    Tmp, Tpk, Tak
+}
\ No newline at end of file
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/XReportCallbackHandlerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/XReportCallbackHandlerImpl.java
new file mode 100644
index 0000000..b716530
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/XReportCallbackHandlerImpl.java
@@ -0,0 +1,72 @@
+package com.example.aman_kassa_flutter.bank;
+
+import android.widget.Toast;
+
+import java.util.List;
+
+import ru.m4bank.mpos.library.M4BankMposClientInterfaceFacade;
+import ru.m4bank.mpos.library.external.transactions.XReportCallbackHandler;
+import ru.m4bank.mpos.service.commons.data.ResultType;
+import ru.m4bank.mpos.service.data.dynamic.objects.Transaction;
+import ru.m4bank.mpos.service.hardware.printer.dto.data.PrintingType;
+import ru.m4bank.mpos.service.result.Result;
+import ru.m4bank.mpos.service.transactions.data.external.ExternalReconciliationData;
+
+public class XReportCallbackHandlerImpl implements XReportCallbackHandler<Result> {
+
+    private PrintingType reportType;
+    private M4BankActivity activity;
+    private M4BankMposClientInterfaceFacade clientInterface;
+
+    public XReportCallbackHandlerImpl(M4BankMposClientInterfaceFacade clientInterface, PrintingType reportType, M4BankActivity activity) {
+        this.reportType = reportType;
+        this.activity = activity;
+        this.clientInterface = clientInterface;
+    }
+
+    @Override
+    public void onTransactionsListReceived(List<Transaction> list) {
+        if(list == null || list.isEmpty()) {
+            activity.runOnUiThread(() -> Toast.makeText(activity, "list of transaction is empty", Toast.LENGTH_SHORT).show());
+        } else {
+            ExternalReconciliationData data = new ExternalReconciliationData.Builder()
+                    .reconciliationData(new ReconciliationPrinterDataBuilder().build(list, false))
+                    .build();
+            printReport(clientInterface, reportType, data);
+        }
+    }
+
+    @Override
+    public void notAuthorized() {
+        activity.runOnUiThread(() -> Toast.makeText(activity, "Not authorized", Toast.LENGTH_SHORT).show());
+    }
+
+    @Override
+    public void onCompleted(Result result) {
+        if(result == null || result.getResultType() != ResultType.SUCCESSFUL) {
+            activity.runOnUiThread(() -> Toast.makeText(activity, "Wrong method has been called", Toast.LENGTH_SHORT).show());
+        }else if(result.getResultType() == ResultType.SUCCESSFUL){
+            // if code is successful and list is empty -> reconciliation is already done
+            activity.runOnUiThread(() -> Toast.makeText(activity, "list of transaction is empty", Toast.LENGTH_SHORT).show());
+        }
+    }
+
+    @Override
+    public void onWrongApiCalled() {
+
+    }
+
+    @Override
+    public void onRepeat(int i) {
+
+    }
+
+    private void printReport(M4BankMposClientInterfaceFacade clientInterface, PrintingType reportType, ExternalReconciliationData data) {
+        clientInterface.cancel();
+        if(reportType == PrintingType.RECONCILIATION_FULL_REPORT) {
+            clientInterface.getPrinterManager().printReconciliationReportFull(new PrintingCallbackHandlerImpl(activity), data);
+        } else {
+            clientInterface.getPrinterManager().printReconciliationReportShort(new PrintingCallbackHandlerImpl(activity), data);
+        }
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/builders/SslConfigurationBuilder.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/builders/SslConfigurationBuilder.java
new file mode 100644
index 0000000..187dc23
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/builders/SslConfigurationBuilder.java
@@ -0,0 +1,50 @@
+package com.example.aman_kassa_flutter.bank.builders;
+
+import javax.net.ssl.HostnameVerifier;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLSocketFactory;
+import javax.net.ssl.X509TrustManager;
+
+import ru.m4bank.mpos.service.network.retrofit.SSLConfiguration;
+
+public class SslConfigurationBuilder {
+    public static SSLConfiguration buildAllTrustConfiguration(String serverAddress) {
+        X509TrustManager[] trustManager = getTrustManagers();
+        return new SSLConfiguration.Builder()
+                .trustManager(trustManager[0])
+                .hostnameVerifier(getHostnameVerifier(serverAddress))
+                .socketFactory(getSSLSocketFactory(trustManager))
+                .build();
+    }
+
+    private static HostnameVerifier getHostnameVerifier(String serverUrl) {
+        return (hostname, session) -> true;
+    }
+
+    private static X509TrustManager[] getTrustManagers() {
+        return new X509TrustManager[]{new X509TrustManager() {
+            @Override
+            public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) {
+            }
+
+            @Override
+            public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) {
+            }
+
+            @Override
+            public java.security.cert.X509Certificate[] getAcceptedIssuers() {
+                return new java.security.cert.X509Certificate[]{};
+            }
+        }};
+    }
+
+    private static SSLSocketFactory getSSLSocketFactory(X509TrustManager[] trustManager) {
+        try {
+            final SSLContext sslContext = SSLContext.getInstance("SSL");
+            sslContext.init(null, trustManager, new java.security.SecureRandom());
+            return sslContext.getSocketFactory();
+        } catch (Exception e) {
+            return null;
+        }
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/gui/CustomKeyBoardDilalog.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/gui/CustomKeyBoardDilalog.java
new file mode 100644
index 0000000..56d4adf
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/gui/CustomKeyBoardDilalog.java
@@ -0,0 +1,129 @@
+package com.example.aman_kassa_flutter.bank.gui;
+
+import android.app.Activity;
+import android.app.Dialog;
+import android.content.Context;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.Window;
+import android.view.WindowManager;
+import android.widget.Button;
+
+import com.example.aman_kassa_flutter.R;
+
+import ru.m4bank.mpos.service.transactions.data.MessageButtonData;
+
+
+public class CustomKeyBoardDilalog {
+
+    Button btnb1, btnb2, btnb3, btnb4, btnb5, btnb6, btnb7, btnb8, btnb9, btnb0,
+            btncancel, btnconfirm, btnclean;
+    View view;
+    Dialog dialog;
+
+    public void createDialog(Context context) {
+
+        dialog = new Dialog(context);
+        view = LayoutInflater.from(context).inflate(R.layout.layout_pin, null);
+        btnb1 = (Button) view.findViewById(R.id.button1);
+        btnb2 = (Button) view.findViewById(R.id.button2);
+        btnb3 = (Button) view.findViewById(R.id.button3);
+        btnb4 = (Button) view.findViewById(R.id.button4);
+        btnb5 = (Button) view.findViewById(R.id.button5);
+        btnb6 = (Button) view.findViewById(R.id.button6);
+        btnb7 = (Button) view.findViewById(R.id.button7);
+        btnb8 = (Button) view.findViewById(R.id.button8);
+        btnb9 = (Button) view.findViewById(R.id.button9);
+        btnb0 = (Button) view.findViewById(R.id.button0);
+        btncancel = (Button) view.findViewById(R.id.buttoncan);
+        btnconfirm = (Button) view.findViewById(R.id.buttonconfirm);
+        btnclean = (Button) view.findViewById(R.id.buttonclean);
+        Window dialogWindow = dialog.getWindow();
+        dialogWindow.setGravity( Gravity.BOTTOM);
+
+        WindowManager.LayoutParams lp = dialogWindow.getAttributes();
+        lp.x = 0;
+        lp.y = 0;
+        view.measure(0, 0);
+        lp.height = view.getMeasuredHeight();
+        lp.alpha = 9f;
+        dialogWindow.setAttributes(lp);
+        dialog.setContentView(view);
+    }
+
+    public void show(Activity activity) {
+        if (!activity.isFinishing())
+            dialog.show();
+    }
+
+    public void close(Activity activity) {
+        if (!activity.isFinishing() && dialog != null && dialog.isShowing())
+            dialog.dismiss();
+    }
+
+    public void setText(MessageButtonData messageButtonData) {
+        btnb1.setText("" + messageButtonData.getBtnb1());
+        btnb2.setText("" + messageButtonData.getBtnb2());
+        btnb3.setText("" + messageButtonData.getBtnb3());
+        btnb4.setText("" + messageButtonData.getBtnb4());
+        btnb5.setText("" + messageButtonData.getBtnb5());
+        btnb6.setText("" + messageButtonData.getBtnb6());
+        btnb7.setText("" + messageButtonData.getBtnb7());
+        btnb8.setText("" + messageButtonData.getBtnb8());
+        btnb9.setText("" + messageButtonData.getBtnb9());
+        btnb0.setText("" + messageButtonData.getBtnb0());
+    }
+
+    public Button getBtnb1() {
+        return btnb1;
+    }
+
+    public Button getBtnb2() {
+        return btnb2;
+    }
+
+    public Button getBtnb3() {
+        return btnb3;
+    }
+
+    public Button getBtnb4() {
+        return btnb4;
+    }
+
+    public Button getBtnb5() {
+        return btnb5;
+    }
+
+    public Button getBtnb6() {
+        return btnb6;
+    }
+
+    public Button getBtnb7() {
+        return btnb7;
+    }
+
+    public Button getBtnb8() {
+        return btnb8;
+    }
+
+    public Button getBtnb9() {
+        return btnb9;
+    }
+
+    public Button getBtnb0() {
+        return btnb0;
+    }
+
+    public Button getBtncancel() {
+        return btncancel;
+    }
+
+    public Button getBtnconfirm() {
+        return btnconfirm;
+    }
+
+    public Button getBtnclean() {
+        return btnclean;
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/gui/SelectDialogCallback.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/gui/SelectDialogCallback.java
new file mode 100644
index 0000000..66a51d6
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/gui/SelectDialogCallback.java
@@ -0,0 +1,10 @@
+package com.example.aman_kassa_flutter.bank.gui;
+
+/**
+ * Created by pppoo on 27.02.2018.
+ */
+
+public interface SelectDialogCallback<ElementType> {
+    void onElementSelected(ElementType element);
+    void onCancelSelection();
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/gui/SelectElementDialog.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/gui/SelectElementDialog.java
new file mode 100644
index 0000000..7a058f3
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/gui/SelectElementDialog.java
@@ -0,0 +1,65 @@
+package com.example.aman_kassa_flutter.bank.gui;
+
+import android.app.Activity;
+import android.app.Dialog;
+import android.content.Context;
+import android.view.ViewGroup.LayoutParams;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+import android.widget.TextView;
+
+import com.example.aman_kassa_flutter.R;
+
+import java.util.List;
+
+public class SelectElementDialog<ElementType> extends Dialog {
+    private Context context;
+    ArrayAdapter<ElementType> listAdapter;
+    private TextView labelTitle;
+    private ListView list;
+    private SelectDialogCallback<ElementType> selectDialogCallback;
+
+    public SelectElementDialog(final Context context, List<ElementType> elements, SelectDialogCallback<ElementType> selectDialogCallback) {
+        super(context);
+        this.context = context;
+        this.selectDialogCallback = selectDialogCallback;
+        setCancelable(false);
+        setCanceledOnTouchOutside(false);
+        init(elements);
+        list.setAdapter(listAdapter);
+        getWindow().setLayout(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
+
+        list.setOnItemClickListener((arg0, arg1, arg2, arg3) -> {
+            ElementType element = (ElementType) arg0.getItemAtPosition(arg2);
+            selectDialogCallback.onElementSelected(element);
+            ((Activity) context).runOnUiThread(this::dismiss);
+        });
+    }
+
+    private void init(List<ElementType> elements) {
+        setContentView(R.layout.custom_dialog_list);
+        labelTitle = findViewById(R.id.labelMessage);
+        list = findViewById(R.id.list);
+        listAdapter = new ArrayAdapter<ElementType>(context, R.layout.list_item, R.id.itemView, elements);
+    }
+
+    @Override
+    public void onBackPressed() {
+        super.onBackPressed();
+    }
+
+    public void setTitle(String text) {
+        if (null != labelTitle)
+            labelTitle.setText(text);
+    }
+
+    public static void showError(Context context, String message) {
+        try {
+            Dialog dialog = new Dialog(context);
+            dialog.setTitle(message);
+            dialog.show();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}
\ No newline at end of file
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/managing/PreferencesManager.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/managing/PreferencesManager.java
new file mode 100644
index 0000000..3420ae4
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/managing/PreferencesManager.java
@@ -0,0 +1,37 @@
+package com.example.aman_kassa_flutter.bank.managing;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+
+import static android.content.Context.MODE_PRIVATE;
+
+public class PreferencesManager {
+    public enum Field {
+        LOGIN("Login"), PASSWORD("Password"), SERVER_URL("ServerUrl");
+
+        private String code;
+
+        Field(String code) {
+            this.code = code;
+        }
+
+        public String getCode() {
+            return code;
+        }
+    }
+
+    public static void saveStringField(Context context, Field field, String value) {
+        SharedPreferences preferences = context.getSharedPreferences("preferences", MODE_PRIVATE);
+        SharedPreferences.Editor editor = preferences.edit();
+        editor.putString(field.getCode(), value).apply();
+    }
+
+    public static String loadStringField(Context context, Field field) {
+        return loadStringField(context, field, null);
+    }
+
+    public static String loadStringField(Context context, Field field, String defaultValue) {
+        SharedPreferences preferences = context.getSharedPreferences("preferences", MODE_PRIVATE);
+        return preferences.getString(field.getCode(), defaultValue);
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/permissions/PermissionsManager.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/permissions/PermissionsManager.java
new file mode 100644
index 0000000..d26d213
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/permissions/PermissionsManager.java
@@ -0,0 +1,11 @@
+package com.example.aman_kassa_flutter.bank.permissions;
+
+public interface PermissionsManager {
+    void checkPermissions(PermissionsCheckResultHandler handler);
+    void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults);
+
+    interface PermissionsCheckResultHandler {
+        void onPermissionsGranted();
+        void onPermissionsDeclined();
+    }
+}
diff --git a/android/app/src/main/java/com/example/aman_kassa_flutter/bank/permissions/PermissionsManagerImpl.java b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/permissions/PermissionsManagerImpl.java
new file mode 100644
index 0000000..c2d0c3b
--- /dev/null
+++ b/android/app/src/main/java/com/example/aman_kassa_flutter/bank/permissions/PermissionsManagerImpl.java
@@ -0,0 +1,65 @@
+package com.example.aman_kassa_flutter.bank.permissions;
+
+import android.Manifest;
+import android.app.Activity;
+import android.content.pm.PackageManager;
+
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+
+public class PermissionsManagerImpl implements PermissionsManager {
+    private static final int MY_PERMISSIONS_REQUEST = 107;
+    private static final String[] PERMISSIONS_LIST = new String[]{
+            Manifest.permission.READ_PHONE_STATE,
+            Manifest.permission.ACCESS_FINE_LOCATION,
+            Manifest.permission.ACCESS_COARSE_LOCATION,
+            Manifest.permission.CAMERA,
+            Manifest.permission.READ_EXTERNAL_STORAGE,
+            Manifest.permission.WRITE_EXTERNAL_STORAGE
+    };
+
+    private final Activity activity;
+    private PermissionsCheckResultHandler permissionsCheckResultHandler;
+
+    public PermissionsManagerImpl(Activity activity) {
+        this.activity = activity;
+    }
+
+    @Override
+    public void checkPermissions(PermissionsCheckResultHandler permissionsCheckResultHandler) {
+        for (String permission : PERMISSIONS_LIST) {
+            if (ContextCompat.checkSelfPermission(activity, permission) != PackageManager.PERMISSION_GRANTED) {
+                this.permissionsCheckResultHandler = permissionsCheckResultHandler;
+                ActivityCompat.requestPermissions(activity, PERMISSIONS_LIST, MY_PERMISSIONS_REQUEST);
+                return;
+            }
+        }
+
+        permissionsCheckResultHandler.onPermissionsGranted();
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode,
+                                           String permissions[], int[] grantResults) {
+        switch (requestCode) {
+            case MY_PERMISSIONS_REQUEST: {
+                if (grantResults.length == PERMISSIONS_LIST.length) {
+                    if (arePermissionsGranted(grantResults)) {
+                        permissionsCheckResultHandler.onPermissionsGranted();
+                    } else {
+                        permissionsCheckResultHandler.onPermissionsDeclined();
+                    }
+                }
+            }
+        }
+    }
+
+    private boolean arePermissionsGranted(int[] grantResults) {
+        boolean access = true;
+        for (int grantResult : grantResults) {
+            if (grantResult != PackageManager.PERMISSION_GRANTED)
+                access = false;
+        }
+        return access;
+    }
+}
diff --git a/android/app/src/main/kotlin/com/example/aman_kassa_flutter/MainActivity.kt b/android/app/src/main/kotlin/com/example/aman_kassa_flutter/MainActivity.kt
index 4dbc05f..e45d468 100644
--- a/android/app/src/main/kotlin/com/example/aman_kassa_flutter/MainActivity.kt
+++ b/android/app/src/main/kotlin/com/example/aman_kassa_flutter/MainActivity.kt
@@ -3,7 +3,7 @@ package com.example.aman_kassa_flutter
 import android.app.Activity
 import android.content.Intent
 import androidx.annotation.NonNull
-import com.example.aman_kassa_flutter.bank.BankActivity
+import com.example.aman_kassa_flutter.bank.M4BankActivity
 import com.example.aman_kassa_flutter.bank.MusicPlugin
 import io.flutter.embedding.android.FlutterActivity
 import io.flutter.embedding.engine.FlutterEngine
@@ -25,8 +25,9 @@ class MainActivity: FlutterActivity() {
             call, result ->
             if (call.method == "start") {
                 _result = result
-                val intent= Intent(this, BankActivity::class.java)
+                val intent= Intent(this, M4BankActivity::class.java)
                 startActivityForResult(intent, 8989)
+
                 //result.success("ActivityStarted")
             } else  {
                 result.notImplemented()
diff --git a/android/app/src/main/res/layout/activity_main.xml b/android/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 0000000..771ce23
--- /dev/null
+++ b/android/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,476 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    tools:context="com.example.aman_kassa_flutter.bank.M4BankActivity">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:paddingBottom="@dimen/activity_vertical_margin"
+        android:paddingLeft="@dimen/activity_horizontal_margin"
+        android:paddingRight="@dimen/activity_horizontal_margin"
+        android:paddingTop="@dimen/activity_vertical_margin">
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
+            <Button
+                android:id="@+id/authorize"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/authorize_button" />
+            <EditText
+                android:id="@+id/amountField"
+                android:layout_weight="1"
+                android:inputType="numberDecimal"
+                android:hint="@string/amount_hint"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content" />
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <EditText
+                android:id="@+id/login"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:hint="@string/login_hint"
+                android:inputType="text" />
+
+            <EditText
+                android:id="@+id/password"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:hint="@string/password_hint"
+                android:inputType="textPassword" />
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
+
+            <Button
+                android:id="@+id/logout"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/logout_button" />
+
+            <!--<Button-->
+                <!--android:id="@+id/changePassword"-->
+                <!--android:layout_width="wrap_content"-->
+                <!--android:layout_height="wrap_content"-->
+                <!--android:layout_gravity="center_horizontal"-->
+                <!--android:text="@string/change_password_button" />-->
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <!--<EditText-->
+                <!--android:id="@+id/oldPassword"-->
+                <!--android:layout_width="0dp"-->
+                <!--android:layout_height="wrap_content"-->
+                <!--android:layout_weight="1"-->
+                <!--android:hint="@string/old_password_hint"-->
+                <!--android:inputType="textPassword" />-->
+
+            <!--<EditText-->
+                <!--android:id="@+id/newPassword"-->
+                <!--android:layout_width="0dp"-->
+                <!--android:layout_height="wrap_content"-->
+                <!--android:layout_weight="1"-->
+                <!--android:hint="@string/new_password_hint"-->
+                <!--android:inputType="textPassword" />-->
+
+        </LinearLayout>
+
+        <!--<Button-->
+            <!--android:id="@+id/register"-->
+            <!--android:layout_width="wrap_content"-->
+            <!--android:layout_height="wrap_content"-->
+            <!--android:text="@string/register_button" />-->
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <!--<EditText-->
+                <!--android:id="@+id/code"-->
+                <!--android:layout_width="0dp"-->
+                <!--android:layout_height="wrap_content"-->
+                <!--android:layout_weight="1"-->
+                <!--android:hint="@string/code_hint"-->
+                <!--android:inputType="number" />-->
+
+            <!--<EditText-->
+                <!--android:id="@+id/pin"-->
+                <!--android:layout_width="0dp"-->
+                <!--android:layout_height="wrap_content"-->
+                <!--android:layout_weight="1"-->
+                <!--android:hint="@string/pin_hint"-->
+                <!--android:inputType="number" />-->
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="40dp">
+
+            <Button
+                android:id="@+id/checkAccess"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:text="@string/check_access" />
+
+            <Spinner
+                android:id="@+id/checkAccessSpinner"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:entries="@array/accessTypes" />
+
+        </LinearLayout>
+
+        <Button
+            android:id="@+id/getAccesses"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/get_available_operations" />
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="40dp"
+            android:orientation="horizontal">
+
+            <!--<Button-->
+                <!--android:id="@+id/setLanguage"-->
+                <!--android:layout_width="wrap_content"-->
+                <!--android:layout_height="match_parent"-->
+                <!--android:text="@string/set_language" />-->
+
+            <!--<Spinner-->
+                <!--android:id="@+id/setLanguageSpinner"-->
+                <!--android:layout_width="wrap_content"-->
+                <!--android:layout_height="wrap_content"-->
+                <!--android:entries="@array/languages" />-->
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <Button
+                android:id="@+id/checkConnection"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:text="@string/check_connection" />
+
+            <Button
+                android:id="@+id/getLicense"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:text="@string/get_license" />
+
+        </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <Button
+            android:id="@+id/makeCardPayment"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="@string/make_card_payment" />
+
+        <Button
+            android:id="@+id/getCommonCardData"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="@string/get_common_card_data" />
+
+    </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <Button
+                android:id="@+id/makeReversalLast"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:text="@string/make_reversal_last" />
+
+            <Button
+                android:id="@+id/getCurrentTransactionDetails"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:text="@string/get_current_transaction_details" />
+
+            <Button
+                android:id="@+id/completePayment"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:text="@string/complete_payment" />
+
+        </LinearLayout>
+
+        <Button
+            android:id="@+id/getSerialNumber"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/getSerialNumber" />
+
+        <Button
+            android:id="@+id/makeReversalLastWithCallback"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/make_reversal_last_saved_operation" />
+
+        <Button
+            android:id="@+id/makeCashPayment"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/make_cash_payment" />
+
+        <Button
+            android:id="@+id/makeAlipayPayment"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/make_alipay_payment" />
+
+        <Button
+            android:id="@+id/makeCardRefund"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/make_card_refund" />
+
+        <!--<Button-->
+            <!--android:id="@+id/makeCardRefundWithD200"-->
+            <!--android:layout_width="wrap_content"-->
+            <!--android:layout_height="match_parent"-->
+            <!--android:text="@string/make_card_refund_with_d200" />-->
+
+        <Button
+            android:id="@+id/makeCashRefund"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/make_cash_refund" />
+
+        <!--<Button-->
+            <!--android:id="@+id/makeCashRefundWithD200"-->
+            <!--android:layout_width="wrap_content"-->
+            <!--android:layout_height="match_parent"-->
+            <!--android:text="@string/make_cash_refund_with_d200" />-->
+
+        <Button
+            android:id="@+id/makeAlipayRefund"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/make_alipay_refund" />
+
+        <!--<Button-->
+            <!--android:id="@+id/makeReversal"-->
+            <!--android:layout_width="wrap_content"-->
+            <!--android:layout_height="match_parent"-->
+            <!--android:text="@string/make_reversal" />-->
+
+        <Button
+            android:id="@+id/makeEasyReversal"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/make_easy_reversal" />
+
+        <Button
+            android:id="@+id/makeEasyCardReversal"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/make_easy_card_reversal" />
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <!--<Button-->
+                <!--android:id="@+id/makeReconciliation"-->
+                <!--android:layout_width="wrap_content"-->
+                <!--android:layout_height="match_parent"-->
+                <!--android:text="@string/make_reconciliation" />-->
+
+            <!--<Button-->
+                <!--android:id="@+id/enterServiceMenu"-->
+                <!--android:layout_width="wrap_content"-->
+                <!--android:layout_height="match_parent"-->
+                <!--android:text="@string/enter_service_menu" />-->
+
+        </LinearLayout>
+
+        <!--<Button-->
+            <!--android:id="@+id/addAdditionalCardReader"-->
+            <!--android:layout_width="wrap_content"-->
+            <!--android:layout_height="match_parent"-->
+            <!--android:text="@string/add_additional_card_reader" />-->
+
+        <!--<Button-->
+            <!--android:id="@+id/getReadersInfo"-->
+            <!--android:layout_width="wrap_content"-->
+            <!--android:layout_height="match_parent"-->
+            <!--android:text="@string/get_readers_info" />-->
+
+        <Button
+            android:id="@+id/getMerchantUsers"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/get_merchant_users" />
+
+        <Button
+            android:id="@+id/resendReceipt"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/resend_receipt" />
+
+        <Button
+            android:id="@+id/getTransactionDetails"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/get_transaction_details" />
+
+        <Button
+            android:id="@+id/getTransactionListFilter"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/get_filter_list" />
+
+        <Button
+            android:id="@+id/activate"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/activate" />
+
+        <Button
+            android:id="@+id/addPrinter"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/add_new_printer" />
+
+        <Button
+            android:id="@+id/deletePrinter"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/delete_printer" />
+
+        <Button
+            android:id="@+id/printFiscal"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/printing_fiscal_check" />
+
+        <Button
+            android:id="@+id/printSlipCheck"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/printing_slip_check" />
+
+        <Button
+            android:id="@+id/printTemplate"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/print_template" />
+
+        <Button
+            android:id="@+id/printReportX"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/printing_x_report" />
+
+        <Button
+            android:id="@+id/printReportZ"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/printing_z_report" />
+
+        <Button
+            android:id="@+id/printFullReport"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/printing_full_report" />
+
+        <Button
+            android:id="@+id/printShortReport"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/printing_short_report" />
+
+        <!--<Button-->
+            <!--android:id="@+id/executeExternalApplication"-->
+            <!--android:layout_width="wrap_content"-->
+            <!--android:layout_height="match_parent"-->
+            <!--android:text="@string/call_external_application" />-->
+
+        <Button
+            android:id="@+id/sendRegisterRequest"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/send_register_request" />
+
+        <Button
+            android:id="@+id/cancel"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/cancel_interface" />
+
+        <Button
+            android:id="@+id/ecomPayment"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/make_ecom_payment" />
+
+        <Button
+            android:id="@+id/getAccessPaymentInstruments"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/get_access_payment_instruments" />
+
+        <Button
+            android:id="@+id/closeDay"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/close_day" />
+
+        <Button
+            android:id="@+id/writeTerminalKeys"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:text="@string/write_terminal_keys" />
+
+        <Button
+            android:id="@+id/readBarCode"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/read_barcode" />
+
+        <Button
+            android:id="@+id/updateDictionary"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/update_dictionary" />
+
+    </LinearLayout>
+
+</ScrollView>
diff --git a/android/app/src/main/res/layout/custom_dialog_list.xml b/android/app/src/main/res/layout/custom_dialog_list.xml
new file mode 100644
index 0000000..644c7bc
--- /dev/null
+++ b/android/app/src/main/res/layout/custom_dialog_list.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@android:color/white"
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@+id/labelMessage"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentTop="true"
+        android:layout_marginLeft="20dp"
+        android:layout_marginRight="20dp"
+        android:layout_marginTop="20dp"
+        android:text="Choose element" />
+
+    <ListView
+        android:id="@+id/list"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/labelMessage"
+        android:layout_marginLeft="20dp"
+        android:layout_marginRight="20dp"
+        android:layout_marginTop="20dp"
+        android:cacheColorHint="#00000000"
+        android:divider="@android:color/transparent"
+        android:dividerHeight="1dp"
+        android:listSelector="@android:color/transparent" />
+</RelativeLayout>
diff --git a/android/app/src/main/res/layout/layout_pin.xml b/android/app/src/main/res/layout/layout_pin.xml
new file mode 100644
index 0000000..f7149f3
--- /dev/null
+++ b/android/app/src/main/res/layout/layout_pin.xml
@@ -0,0 +1,138 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:weightSum="1">
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:text="New Text"
+        android:textSize="30sp" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/button1"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/pin_text_btn_1" />
+
+        <Button
+            android:id="@+id/button2"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/pin_text_btn_2" />
+
+        <Button
+            android:id="@+id/button3"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/pin_text_btn_3" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/button4"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/pin_text_btn_4" />
+
+        <Button
+            android:id="@+id/button5"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/pin_text_btn_5" />
+
+        <Button
+            android:id="@+id/button6"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/pin_text_btn_6" />
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/button7"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/pin_text_btn_7" />
+
+        <Button
+            android:id="@+id/button8"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/pin_text_btn_8" />
+
+        <Button
+            android:id="@+id/button9"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/pin_text_btn_9" />
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="0.36"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/button0"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/pin_text_btn_0" />
+
+        <Button
+            android:id="@+id/buttoncan"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/cancel" />
+
+        <Button
+            android:id="@+id/buttonconfirm"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/confirm" />
+
+        <Button
+            android:id="@+id/buttonclean"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/clear" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/buttonstart"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/pin_text_btn_start" />
+
+        <Button
+            android:id="@+id/buttonexit"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/pin_text_btn_exit" />
+    </LinearLayout>
+</LinearLayout>
\ No newline at end of file
diff --git a/android/app/src/main/res/layout/list_item.xml b/android/app/src/main/res/layout/list_item.xml
new file mode 100644
index 0000000..dcdc7ce
--- /dev/null
+++ b/android/app/src/main/res/layout/list_item.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <TextView
+        android:id="@+id/itemView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_centerVertical="true"
+        android:padding="20dp"
+        android:textColor="@android:color/black" />
+
+</RelativeLayout>
diff --git a/android/app/src/main/res/values/colors.xml b/android/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000..3ab3e9c
--- /dev/null
+++ b/android/app/src/main/res/values/colors.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#3F51B5</color>
+    <color name="colorPrimaryDark">#303F9F</color>
+    <color name="colorAccent">#FF4081</color>
+</resources>
diff --git a/android/app/src/main/res/values/dimens.xml b/android/app/src/main/res/values/dimens.xml
new file mode 100644
index 0000000..47c8224
--- /dev/null
+++ b/android/app/src/main/res/values/dimens.xml
@@ -0,0 +1,5 @@
+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+</resources>
diff --git a/android/app/src/main/res/values/strings.xml b/android/app/src/main/res/values/strings.xml
index 73862c4..d27fd5b 100644
--- a/android/app/src/main/res/values/strings.xml
+++ b/android/app/src/main/res/values/strings.xml
@@ -1 +1,104 @@
-<resources></resources>
\ No newline at end of file
+<resources>
+    <string name="app_name">TestAppM4bank</string>
+    <string name="authorize_button">Authorize</string>
+    <string name="logout_button">Log Out</string>
+    <string name="change_password_button">Change Password</string>
+    <string name="login_hint">Enter Your Login</string>
+    <string name="password_hint">Enter Your Password</string>
+    <string name="old_password_hint">Enter Old Password</string>
+    <string name="new_password_hint">Enter New Password</string>
+    <string name="register_button">Register</string>
+    <string name="code_hint">Enter Reader Code</string>
+    <string name="pin_hint">Enter Reader Pin</string>
+    <string name="serial_hint">Enter Reader Serial Number</string>
+    <string name="default_server_address1">http://10.10.0.245:29978</string>
+    <string name="default_server_address2">http://10.45.49.31:29978</string>
+    <string name="default_server_address_sber_test">http://sbertest.m4bank.ru:21017</string>
+    <!--<string name="default_server_address_mpos_5_0_test">http://217.174.185.218:35997</string>-->
+    <string name="default_server_address_mpos_5_0_test">http://10.31.0.40:5000</string>
+
+    <string name="check_access">Check access</string>
+    <string name="get_available_operations">Get available operations</string>
+    <string name="set_language">Set language</string>
+    <string name="check_connection">Check connection</string>
+    <string name="make_card_payment">Make card payment</string>
+    <string name="get_common_card_data">Get common card data</string>
+    <string name="add_additional_card_reader">Add additional card reader</string>
+    <string name="get_readers_info">Get readers info</string>
+    <string name="make_cash_payment">Make cash payment</string>
+    <string name="make_alipay_payment">Make alipay payment</string>
+    <string name="make_card_refund">Make card refund</string>
+    <string name="make_card_refund_with_d200">Make card refund with D200</string>
+    <string name="make_cash_refund_with_d200">Make easy cash refund</string>
+    <string name="make_alipay_refund">Make alipay refund</string>
+    <string name="make_cash_refund">Make cash refund</string>
+    <string name="make_reversal">Make reversal</string>
+    <string name="make_easy_reversal">Make easy reversal</string>
+    <string name="make_easy_card_reversal">Make easy card reversal</string>
+    <string name="make_reconciliation">Make reconciliation</string>
+    <string name="get_merchant_users">Get merchant users</string>
+    <string name="get_access_payment_instruments">Get access PI</string>
+    <string name="close_day">Close day</string>
+    <string name="write_terminal_keys">Write terminal keys</string>
+    <string name="read_barcode">Read BarCode</string>
+    <string name="update_dictionary">Update Dictionary</string>
+
+    <string-array name="accessTypes">
+        <item>Payment</item>
+        <item>Reversal</item>
+        <item>Refund</item>
+        <item>Cash</item>
+        <item>PartRefund</item>
+        <item>AddReader</item>
+        <item>CloseDay</item>
+        <item>AddPrinter</item>
+        <item>FuncPrinter</item>
+    </string-array>
+
+    <string-array name="languages">
+        <item>rus</item>
+        <item>eng</item>
+    </string-array>
+
+    <string name="confirm">confirm</string>
+    <string name="clear">clear</string>
+    <string name="cancel">cancel</string>
+    <string name="resend_receipt">Resend receipt</string>
+    <string name="get_transaction_details">Get transaction details</string>
+    <string name="get_filter_list">Get filter list</string>
+    <string name="activate">Activate</string>
+    <string name="add_new_printer">Add new printer</string>
+    <string name="delete_printer">Delete printer</string>
+    <string name="printing_fiscal_check">Printing fiscal check</string>
+    <string name="printing_slip_check">Printing slip check</string>
+    <string name="print_template">print template</string>
+    <string name="printing_x_report">Printing X report</string>
+    <string name="printing_z_report">Printing Z report</string>
+    <string name="printing_full_report">Printing full report</string>
+    <string name="printing_short_report">Printing short report</string>
+    <string name="call_external_application">Call external application</string>
+    <string name="send_register_request">Send register request</string>
+    <string name="cancel_interface">Cancel interface</string>
+    <string name="make_ecom_payment">Make ecom payment</string>
+    <string name="enter_service_menu">Enter service menu</string>
+    <string name="make_reversal_last_saved_operation">Make reversal last saved operation</string>
+    <string name="getSerialNumber">Get Serial Number</string>
+
+    <string name="pin_text_btn_1">1</string>
+    <string name="pin_text_btn_2">2</string>
+    <string name="pin_text_btn_3">3</string>
+    <string name="pin_text_btn_4">4</string>
+    <string name="pin_text_btn_5">5</string>
+    <string name="pin_text_btn_6">6</string>
+    <string name="pin_text_btn_7">7</string>
+    <string name="pin_text_btn_8">8</string>
+    <string name="pin_text_btn_9">9</string>
+    <string name="pin_text_btn_0">0</string>
+    <string name="pin_text_btn_start">start</string>
+    <string name="pin_text_btn_exit">exit</string>
+    <string name="get_license">Get license</string>
+    <string name="make_reversal_last">Make reversal last</string>
+    <string name="get_current_transaction_details">Get current transaction details</string>
+    <string name="complete_payment">Complete payment</string>
+    <string name="amount_hint">Amount</string>
+</resources>
diff --git a/android/build.gradle b/android/build.gradle
index 1eddda3..a2a8a70 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -9,10 +9,110 @@ buildscript {
         classpath 'com.android.tools.build:gradle:3.5.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
+
+    ext.buildType = [
+            'buildType': ''
+    ]
+
+    ext.versions = [
+            'supportLibrary': '28.0.0',
+            'okhttp'        : '3.8.1',
+            'retrofit'      : '2.3.0',
+            'multidex'      : '1.0.2',
+            'logback'       : '1.1.1-6'
+    ]
+
+    ext.deps = [
+            'okhttp'      : [
+                    'core'  : "com.squareup.okhttp3:okhttp:${versions.okhttp}",
+                    'logger': "com.squareup.okhttp3:logging-interceptor:${versions.okhttp}",
+            ],
+            'retrofit'    : [
+                    'core'          : "com.squareup.retrofit2:retrofit:${versions.retrofit}",
+                    'converterGson' : "com.squareup.retrofit2:converter-gson:${versions.retrofit}",
+                    'rxjava2Adapter': 'com.squareup.retrofit2:adapter-rxjava2:2.3.0',
+            ],
+            'rx'          : [
+                    'core'   : 'io.reactivex.rxjava2:rxjava:2.1.7',
+                    'android': 'io.reactivex.rxjava2:rxandroid:2.0.1',
+            ],
+            'logback'     : [
+                    'core'   : "com.github.tony19:logback-android-core:${versions.logback}",
+                    'classic': "com.github.tony19:logback-android-classic:${versions.logback}",
+            ],
+            'timber'      : 'com.jakewharton.timber:timber:4.5.1',
+            'paperdb'     : 'io.paperdb:paperdb:2.1',
+            'sdpAndroid'  : 'com.intuit.sdp:sdp-android:1.0.4',
+            'slf4jApi'    : 'org.slf4j:slf4j-api:1.7.21',
+            'greendao'    : 'org.greenrobot:greendao:3.2.2',
+            'websockets'  : 'org.java-websocket:Java-WebSocket:1.4.0',
+            'retro_stream': 'net.sourceforge.streamsupport:android-retrostreams:1.6.3',
+            'hardware'    : [
+                    "terminalCommon": [
+                            "cardreaderlib"    : "m4bank:cardreaderlib:750",
+                            "connectionreaders": "m4bank:connectionreaders:750",
+                            "emv-taglib"       : "external:emv-taglib:2.4",
+                    ],
+                    'aisino'        : [
+                            "aisino_common": "m4bank:aisino_common:138",
+                            "vm20"         : [
+                                    "vm20"    : "external:vm20sdk:9",
+                                    "asinalib": "m4bank:asinalib:99"
+                            ],
+                            "a90"          : [
+                                    "aisinoprinterlib": "m4bank:aisinoprinterlib:152",
+                                    "aisino_a90lib"   : "m4bank:aisino_a90lib:422",
+                                    "aisino_a90deps"  : "m4bank:aisino_a90deps:master-1.1.42@aar",
+                            ],
+                    ],
+                    'wangpos'       : [
+                            "wangposlib"           : "m4bank:wangposlib:53",
+                            "wangposprinterlibrary": "m4bank:wangposprinterlibrary:35",
+                            "SDK4BaseBinder"       : "external:SDK4BaseBinder:2.1.5",
+                            "SDK4EmvBinder"        : "external:SDK4EmvBinder:2.1.5",
+                            "SDK4KeyManagerBinder" : "external:SDK4KeyManagerBinder:2.1.5"
+                    ],
+                    'atol'          : [
+                            "fiscalprinterlibrary": "m4bank:fiscalprinterlibrary:93",
+                            "atol_core"           : "external:atol_core:1@aar"
+                    ],
+                    'shtrih'        : [
+                            "FptrServiceAndroid": "m4bank:FptrServiceAndroid:3",
+                            "shtrih_core"       : "external:shtrihjpos:1"
+                    ],
+                    "icmp"          : [
+                            "icmplibrary"      : "m4bank:icmplibrary:16",
+                            "icmp_dependencies": "m4bank:icmp_dependencies:1.1.1.2@aar"
+                    ],
+                    "roam"          : [
+                            "roamlib"      : "roamlib:roamlib2:207",
+                            "roamreaderAAR": "external:roamreaderunifiedapiAAR:1@aar"
+                    ],
+                    "spirelib"      : "m4bank:spirelib:138",
+                    "softpos"       : [
+                            "softpaylibrary"      : "m4bank:softpaylibrary:41@aar",
+                            "softpay_dependencies": "m4bank:softpay_dependencies:1.1.1.53@aar",
+                    ],
+                    "sunmi"         : "m4bank:sunmiv1printerlibrary:5",
+                    "redlib"        : "m4bank:redlib:1",
+                    "d200lib"       : "m4bank:d200lib:9",
+            ],
+            "zlibrary"    : "m4bank:zlibrary:2134@aar"
+    ]
+
+    ext.currentRepository = "http://217.174.185.218:55555/artifactory/gradle-dev"
 }
 
 allprojects {
     repositories {
+        maven {
+            url currentRepository
+            content {
+                includeGroupByRegex "external.*"
+                includeGroupByRegex "m4bank.*"
+                includeGroupByRegex "roamlib.*"
+            }
+        }
         google()
         jcenter()
     }
diff --git a/lib/views/login/login_view.dart b/lib/views/login/login_view.dart
index 63765a6..e86303b 100644
--- a/lib/views/login/login_view.dart
+++ b/lib/views/login/login_view.dart
@@ -29,8 +29,7 @@ class LoginView extends StatefulWidget {
 }
 
 class _LoginViewState extends State<LoginView> {
-
-  TextEditingController emailController ;
+  TextEditingController emailController;
 
   TextEditingController passwordController;
 
@@ -45,17 +44,19 @@ class _LoginViewState extends State<LoginView> {
   @override
   void initState() {
     super.initState();
-    if(widget.loginModel!=null && widget.loginModel.authType == AuthenticateTypeLogin) {
+    if (widget.loginModel != null &&
+        widget.loginModel.authType == AuthenticateTypeLogin) {
       emailController = TextEditingController(text: widget.loginModel.login);
-      passwordController  = TextEditingController(text: widget.loginModel.password);
+      passwordController =
+          TextEditingController(text: widget.loginModel.password);
     } else {
       emailController = TextEditingController();
-      passwordController  = TextEditingController();
+      passwordController = TextEditingController();
     }
   }
 
   @override
-  void dispose() { 
+  void dispose() {
     emailController.dispose();
     passwordController.dispose();
     super.dispose();
@@ -83,7 +84,14 @@ class _LoginViewState extends State<LoginView> {
                           height: 150,
                           child: Image.asset('assets/images/logo.png'),
                         ),
-                        Positioned(child: Text('онлайн касса', style: TextStyle(fontWeight: FontWeight.bold),), bottom: 23.0,left: 25.0,),
+                        Positioned(
+                          child: Text(
+                            'онлайн касса',
+                            style: TextStyle(fontWeight: FontWeight.bold),
+                          ),
+                          bottom: 23.0,
+                          left: 25.0,
+                        ),
                       ],
                     ),
 
@@ -107,10 +115,13 @@ class _LoginViewState extends State<LoginView> {
                       mainAxisSize: MainAxisSize.max,
                       mainAxisAlignment: MainAxisAlignment.end,
                       children: [
-                        BusyButton(
-                          title: 'Войти',
-                          busy: vm.isLoading,
-                          onPressed: _pressBtnEnter,
+                        SizedBox(
+                          width: 100,
+                          child: BusyButton(
+                            title: 'Войти',
+                            busy: vm.isLoading,
+                            onPressed: _pressBtnEnter,
+                          ),
                         )
                       ],
                     ),
@@ -132,7 +143,8 @@ class _LoginViewState extends State<LoginView> {
   }
 
   _pressBtnEnter() async {
-    if(emailController.text!=null && emailController.text.toLowerCase().trim().startsWith('test')){
+    if (emailController.text != null &&
+        emailController.text.toLowerCase().trim().startsWith('test')) {
       _apiService.test = true;
     } else {
       _apiService.test = false;
@@ -156,13 +168,13 @@ class _LoginViewState extends State<LoginView> {
       //     .formatNote); // If a unknown format was scanned this field contains a note
       if (result.type == ResultType.Barcode &&
           result.rawContent?.length == 60) {
-            if(result.rawContent.toLowerCase().trim().startsWith('test')){
-              _apiService.test = true;
-            } else {
-              _apiService.test = false;
-            }
+        if (result.rawContent.toLowerCase().trim().startsWith('test')) {
+          _apiService.test = true;
+        } else {
+          _apiService.test = false;
+        }
         Redux.store.dispatch(authenticateToken(result.rawContent));
-      } else if (result.type == ResultType.Error ) {
+      } else if (result.type == ResultType.Error) {
         _dialogService.showDialog(description: 'Не верный формат QR кода');
       }
     } on PlatformException catch (e) {
@@ -186,4 +198,4 @@ class LoginModel {
   final String login;
   final String password;
   LoginModel({this.authType, this.login, this.password});
-}
\ No newline at end of file
+}