emvqr 0.0.7

A plugin by Fawry for scanning EMV QR Codes.

example/lib/main.dart

import 'dart:async';
import 'package:emvqr/model/scan_result.dart';
import 'package:flutter/material.dart';
import 'package:emvqr/emvqr.dart';
import 'package:emvqr/model/qr_model.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Fawry SDK Flutter',
      theme: ThemeData(
        useMaterial3: true,
      ),
      darkTheme: ThemeData.dark(
        useMaterial3: true,
      ),
      home: const MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key});

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  late StreamSubscription? _fawryCallbackResultStream;
  QrModel? qrModel;

  @override
  void initState() {
    super.initState();
    setupCallback();
  }

  @override
  void dispose() {
    _fawryCallbackResultStream?.cancel();
    super.dispose();
  }

  Future<void> setupCallback() async {
    try {
      _fawryCallbackResultStream =
          Emvqr.instance.callbackResultStream().listen((event) {
        setState(() {
          Map<Object?, Object?> eventData = event;
          ScanResult response = ScanResult.fromJson(eventData);
          QrModel? model = response.qrData();

          qrModel = model ?? qrModel;
          debugPrint(qrModel.toString());
        });
      });
    } catch (ex) {
      debugPrint("Error in setupCallback: $ex");
    }
  }

  void _showQRModelPopup(BuildContext context) {
    showDialog(
      context: context,
      builder: (BuildContext context) {
        return AlertDialog(
          title: const Text('QR Model Details'),
          content: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            mainAxisSize: MainAxisSize.min,
            children: [
              const Text('Details about the QR Model:'),
              const SizedBox(height: 8),
              if (qrModel != null) Text(qrModel.toString()),
            ],
          ),
          actions: <Widget>[
            TextButton(
              onPressed: () {
                Navigator.of(context).pop();
              },
              child: const Text('OK'),
            ),
          ],
        );
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: const Text('Fawry EMVQR example'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            ElevatedButton(
              onPressed: () async {
                await startScanning();
              },
              child: const Text('SCAN'),
            ),
            if (qrModel != null)
              ElevatedButton(
                onPressed: () {
                  _showQRModelPopup(context);
                },
                child: const Text('Show QR Model'),
              )
            else
              const ElevatedButton(
                onPressed: null,
                child: Text('Waiting for QR Model'),
              ),
          ],
        ),
      ),
    );
  }

  Future<void> startScanning() async {
    await Emvqr.instance.scanQR();
  }
}