ios version - 1

lib/core/services/blue_print_service.dart

@@ -114,6 +114,8 @@ class BluePrintService extends BaseService {
       } else if (isIos) {
         await _bluetoothDeviceIOS?.disconnect();
       }
+
+      print('disconnected');
       response = true;
     } catch (e) {
       print('Error $e');
@@ -124,16 +126,30 @@ class BluePrintService extends BaseService {
 
   Future<bool> printBytes(Uint8List bytes,
       {int chunkSizeBytes = 20, int queueSleepTimeMs = 20}) async {
-    if (isAndroid) {
-      await _printAndroid(bytes, chunkSizeBytes, queueSleepTimeMs);
-    } else if (isIos) {
-      await _printIos(bytes);
+    Map<String, dynamic> config = Map();
+    final len = bytes.length;
+    List<List<int>> chunks = [];
+    for (var i = 0; i < len; i += chunkSizeBytes) {
+      var end = (i + chunkSizeBytes < len) ? i + chunkSizeBytes : len;
+      chunks.add(bytes.sublist(i, end));
     }
 
+    for (var i = 0; i < chunks.length; i += 1) {
+      if (isAndroid) {
+        await _printAndroid(chunks[i], config);
+      } else if (isIos) {
+        await _printIos(Uint8List.fromList(chunks[i]), config);
+      }
+
+      await Future.delayed(Duration(milliseconds: queueSleepTimeMs));
+    }
+
+
+
     return true;
   }
 
-  Future<void> _printIos(Uint8List bytes) async {
+  Future<void> _printIos(Uint8List bytes,Map<String, dynamic> config) async {
     final List<flutter_blue.BluetoothService> bluetoothServices =
         await _bluetoothDeviceIOS?.discoverServices() ??
             <flutter_blue.BluetoothService>[];
@@ -149,18 +165,9 @@ class BluePrintService extends BaseService {
     await characteristic.write(bytes, withoutResponse: true);
   }
 
-  Future<void> _printAndroid(Uint8List bytes, int chunkSizeBytes, int queueSleepTimeMs) async {
-    Map<String, dynamic> config = Map();
-    final len = bytes.length;
-    List<List<int>> chunks = [];
-    for (var i = 0; i < len; i += chunkSizeBytes) {
-      var end = (i + chunkSizeBytes < len) ? i + chunkSizeBytes : len;
-      chunks.add(bytes.sublist(i, end));
-    }
+  Future<void> _printAndroid(List<int> chunk ,Map<String, dynamic> config) async {
 
-    for (var i = 0; i < chunks.length; i += 1) {
-      await _bluetoothAndr.rawBytes(config, chunks[i]);
-      await Future.delayed(Duration(milliseconds: queueSleepTimeMs));
-    }
+
+    await _bluetoothAndr.rawBytes(config, chunk);
   }
 }

lib/views/check/image_show_container.dart

@@ -61,6 +61,17 @@ class _ImageShowContainerState extends State<ImageShowContainer> {
     }
   }
 
+  @override
+  void dispose()  {
+    disconnect();
+    super.dispose();
+  }
+
+
+  void disconnect() async {
+    await printerManager.disconnect();
+  }
+
   void _print() async {
     final SettingState state = Redux.store!.state.settingState!;
     if (state.printerBT == null) {
@@ -107,7 +118,7 @@ class _ImageShowContainerState extends State<ImageShowContainer> {
       print(e);
     }
     await Future.delayed(Duration(seconds: 15));
-    await printerManager.disconnect();
+
     setState(() {
       _printing = false;
     });

lib/views/settings/setting_printer_view.dart

@@ -41,6 +41,15 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
     super.initState();
     _permission();
   }
+  @override
+  void dispose() {
+    disconnect();
+    super.dispose();
+  }
+
+  disconnect() async {
+    await printerManager.disconnect();
+  }
 
   void _testPrint() async {
     setState(() {
@@ -49,12 +58,11 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
     try {
       final SettingState state = Redux.store!.state.settingState!;
       printerManager.device = state.printerBT!;
-      bool isConnected = await printerManager.connect();
-      if(isConnected == false) {
-        await Future.delayed(Duration(seconds: 3));
-        await printerManager.disconnect();
-        return;
-      }
+
+      await disconnect();
+      await Future.delayed(Duration(seconds: 1));
+
+      await printerManager.connect();
       await Future.delayed(Duration(seconds: 3));
       bool isIos = Platform.isIOS;
       int chunkSizeBytes = 3096;
@@ -77,14 +85,14 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
             Uint8List.fromList(await testTicketImage(paper)),
             chunkSizeBytes: chunkSizeBytes,
             queueSleepTimeMs: queueSleepTimeMs);
-        _dialogService.showDialog(description: 'result is $res');
+        //_dialogService.showDialog(description: 'result is $res');
       } else {
         final bool res = await printerManager.printBytes(
             Uint8List.fromList(await printTextCheck(
                 paper, state.printerEncoding!, exampleJson['check_text'])),
             chunkSizeBytes: chunkSizeBytes,
             queueSleepTimeMs: queueSleepTimeMs);
-        _dialogService.showDialog(description: 'result is $res');
+        //_dialogService.showDialog(description: 'result is $res');
       }
     } catch (e) {
       print('ERROR');
@@ -92,8 +100,7 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
     }
     //10 sec safe disconnect
     await Future.delayed(Duration(seconds: 14));
-    await printerManager.disconnect();
-    await Future.delayed(Duration(seconds: 3));
+
     setState(() {
       _printing = false;
     });