emvqr 0.0.10

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';
import 'package:flutter/services.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;
  List<ScanResult> qrResponses = [];

  @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);
          qrResponses.add(response);
          QrModel? model = response.extractQrModel();

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

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: const Text('Fawry EMVQR'),
      ),
      body: SingleChildScrollView(
        scrollDirection: Axis.vertical,
        child: Column(
          children: [
            if (qrModel != null && qrResponses.isNotEmpty)
              Column(
                children: [
                  const Text(
                    'QR Model',
                    style: TextStyle(
                      fontSize: 20,
                      fontWeight: FontWeight.bold,
                    ),
                  ),
                  GestureDetector(
                    onLongPress: () {
                      Clipboard.setData(ClipboardData(text: qrModel.toString()));
                      ScaffoldMessenger.of(context).showSnackBar(
                        const SnackBar(content: Text('Copied to clipboard')),
                      );
                    },
                    child: Text(qrModel.toString()),
                  ),
                ],
              ),
            if (qrResponses.isNotEmpty)
              Center(
                child: SingleChildScrollView(
                  scrollDirection: Axis.horizontal,
                  child: DataTable(
                    columns: const [
                      DataColumn(label: Text('Index')),
                      DataColumn(label: Text('Status')),
                      DataColumn(label: Text('Data')),
                    ],
                    rows: List.generate(qrResponses.length, (index) {
                      return DataRow(
                        cells: [
                          DataCell(Text(index.toString())),
                          DataCell(
                            GestureDetector(
                              onLongPress: () {
                                Clipboard.setData(ClipboardData(
                                    text: qrResponses[index].status));
                                ScaffoldMessenger.of(context).showSnackBar(
                                  const SnackBar(
                                      content: Text('Copied to clipboard')),
                                );
                              },
                              child: Text(qrResponses[index].status),
                            ),
                          ),
                          DataCell(
                            GestureDetector(
                              onLongPress: () {
                                Clipboard.setData(ClipboardData(
                                    text: '${qrResponses[index].data}'));
                                ScaffoldMessenger.of(context).showSnackBar(
                                  const SnackBar(
                                      content: Text('Copied to clipboard')),
                                );
                              },
                              child: Text('${qrResponses[index].data}'),
                            ),
                          ),
                        ],
                      );
                    }),
                  ),
                ),
              ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton.extended(
        onPressed: () async {
          await startScanning();
        },
        label: const Text('Scan QR Code'),
        icon: const Icon(Icons.camera_alt),
      ),
    );
  }
}