qr_scanner_fast 0.0.2

qr_scanner_fast: ^0.0.2 copied to clipboard

example/lib/main.dart

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

void main() => runApp(const ExampleApp());

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

  @override
  Widget build(BuildContext context) => MaterialApp(
    debugShowCheckedModeBanner: false,
    title: 'QR Scanner Fast',
    theme: ThemeData.dark(useMaterial3: true),
    home: const ScannerPage(),
  );
}

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

  @override
  State<ScannerPage> createState() => _ScannerPageState();
}

class _ScannerPageState extends State<ScannerPage> {
  final _controller = QrScannerFastController();
  QrScanResult? _result;

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) => Scaffold(
    backgroundColor: Colors.black,
    body: Stack(
      fit: StackFit.expand,
      children: [
        QrScannerFast(
          controller: _controller,
          config: const QrScannerFastConfig(
            fallbackDelay: Duration(milliseconds: 120),
            frameSampleRate: 1,
            snapshotFrameSampleRate: 4,
            snapshotBufferSize: 6,
            minimumSnapshotSharpness: 3.5,
            frameInterval: Duration(milliseconds: 45),
            mlKitFrameInterval: Duration(milliseconds: 250),
            maxZxingDimension: 720,
            stopAfterDetection: true,
            tryInverted: false,
          ),
          onDetect: (result) => setState(() => _result = result),
          onError: (error, stackTrace) => debugPrint('Scanner error: $error'),
        ),
        SafeArea(
          child: Padding(
            padding: const EdgeInsets.all(18),
            child: Column(
              children: [
                Row(
                  children: [
                    const Expanded(
                      child: Text(
                        'QR Scanner Fast',
                        style: TextStyle(
                          fontSize: 20,
                          fontWeight: FontWeight.w700,
                        ),
                      ),
                    ),
                    AnimatedBuilder(
                      animation: _controller,
                      builder: (context, _) => IconButton.filledTonal(
                        tooltip: 'Flash',
                        onPressed: _controller.toggleTorch,
                        icon: Icon(
                          _controller.torchEnabled
                              ? Icons.flash_on
                              : Icons.flash_off,
                        ),
                      ),
                    ),
                  ],
                ),
                const Spacer(),
                const Text(
                  'Arahkan kamera ke QR. Seluruh frame dipindai,\ntermasuk area di luar kotak panduan.',
                  textAlign: TextAlign.center,
                ),
                const SizedBox(height: 18),
                if (_result case final result?)
                  Card(
                    color: const Color(0xEE18231E),
                    child: Padding(
                      padding: const EdgeInsets.all(18),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.stretch,
                        children: [
                          Text(
                            result.rawValue,
                            maxLines: 3,
                            overflow: TextOverflow.ellipsis,
                            style: const TextStyle(fontSize: 16),
                          ),
                          const SizedBox(height: 8),
                          Text(
                            'Terdeteksi oleh ${result.engine.name}',
                            style: const TextStyle(color: Colors.greenAccent),
                          ),
                          const SizedBox(height: 12),
                          FilledButton.icon(
                            onPressed: () async {
                              setState(() => _result = null);
                              await _controller.start();
                            },
                            icon: const Icon(Icons.qr_code_scanner),
                            label: const Text('Scan lagi'),
                          ),
                        ],
                      ),
                    ),
                  ),
              ],
            ),
          ),
        ),
      ],
    ),
  );
}