import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

class BankView extends StatefulWidget {
  BankView();

  @override
  _BankViewState createState() => _BankViewState();
}

class _BankViewState extends State<BankView> {
  static const MethodChannel _channel =
      MethodChannel('channel:com.amanKassa/bank');
  static const MethodChannel _activity =
      MethodChannel('channel:com.amanKassa/activity');
  String value;
  bool loading = false;
  @override
  void initState() {
    super.initState();
    load();
  }

  load() async {
    setState(() {
      loading = true;
    });
    String result = await _channel.invokeMethod('ping');

    setState(() {
      value = result ?? 'none';
      loading = false;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        centerTitle: true,
        title: Text('Банковская страница'),
      ),
      body: loading
          ? Container(child: Center(child: CircularProgressIndicator()))
          : SingleChildScrollView(
              child: Column(
                children: <Widget>[
                  Container(
                    margin: const EdgeInsets.all(8.0),
                    child: Text(value),
                  ),
                  RaisedButton(
                      child: Text('Press'),
                      onPressed: () async {
                        String result = await _activity.invokeMethod("start");
                        print('invokeMethod: $result');
                        setState(() {
                          loading = false;
                        });
                      })
                ],
              ),
            ),
    );
  }
}