Files
Mridul Dhiman 1564ccdff2 New Example - QR Code Scanner (#122)
Co-authored-by: Mridul <mridul@Mriduls-MacBook-Pro.local>
2022-10-22 20:12:12 +02:00

84 lines
2.5 KiB
Dart

import 'dart:async';
import 'package:flutter/material.dart';
import 'package:mobile_scanner/mobile_scanner.dart';
import 'package:scan_qr_code/utils/qr_code_scanner.dart';
import 'package:scan_qr_code/utils/scanner_box_border_painter.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return const MaterialApp(
title: 'Code Scanner',
home: MyHomePage(title: 'Code Scanner Demo'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
final String title;
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final MobileScannerController _mobileScannerController = MobileScannerController();
late Function(Barcode barcode, MobileScannerArguments? args) _onDetect;
bool _isScanning = true;
@override
void initState() {
super.initState();
_onDetect = (Barcode barcode, MobileScannerArguments? args) {
_mobileScannerController.stop();
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: const Text('Code info'),
content: Text(barcode.rawValue?.trim() ?? 'No data found', textAlign: TextAlign.center),
actions: [TextButton(onPressed: () => Navigator.pop(context), child: const Text('OK'))],
);
}).then((value) {
_mobileScannerController.start();
setState(() {
_isScanning = true;
});
});
setState(() {
_isScanning = false;
});
};
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text(widget.title)),
body: Center(
child: SizedBox.square(
dimension: MediaQuery.of(context).size.width - 48.0,
child: Padding(
padding: const EdgeInsets.all(2.5), // Required otherwise side edges hides under outside padding
child: CustomPaint(
foregroundPainter: ScannerBoxBorderPainter(borderColor: _isScanning ? Colors.black : Colors.green),
child: Padding(
padding: const EdgeInsets.all(2.5), // Required otherwise scanner hides under side edges
child: QRCodeScanner(mobileScannerController: _mobileScannerController, allowDuplicates: false, onDetect: _onDetect),
),
),
),
),
),
);
}
}