barcode_scanner_listview.dart
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import 'dart:async';
import 'package:flutter/material.dart';
import 'package:mobile_scanner/mobile_scanner.dart';
import 'package:mobile_scanner_example/scanner_button_widgets.dart';
import 'package:mobile_scanner_example/scanner_error_widget.dart';
class BarcodeScannerListView extends StatefulWidget {
const BarcodeScannerListView({super.key});
@override
State<BarcodeScannerListView> createState() => _BarcodeScannerListViewState();
}
class _BarcodeScannerListViewState extends State<BarcodeScannerListView> {
final MobileScannerController controller = MobileScannerController(
torchEnabled: true,
);
Widget _buildBarcodesListView() {
return StreamBuilder<BarcodeCapture>(
stream: controller.barcodes,
builder: (context, snapshot) {
final barcodes = snapshot.data?.barcodes;
if (barcodes == null || barcodes.isEmpty) {
return const Center(
child: Text(
'Scan Something!',
style: TextStyle(color: Colors.white, fontSize: 20),
),
);
}
return ListView.builder(
itemCount: barcodes.length,
itemBuilder: (context, index) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: Text(
barcodes[index].rawValue ?? 'No raw value',
overflow: TextOverflow.fade,
style: const TextStyle(color: Colors.white),
),
);
},
);
},
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: const Text('With ListView')),
backgroundColor: Colors.black,
body: Stack(
children: [
MobileScanner(
controller: controller,
errorBuilder: (context, error, child) {
return ScannerErrorWidget(error: error);
},
fit: BoxFit.contain,
),
Align(
alignment: Alignment.bottomCenter,
child: Container(
alignment: Alignment.bottomCenter,
height: 100,
color: const Color.fromRGBO(0, 0, 0, 0.4),
child: Column(
children: [
Expanded(
child: _buildBarcodesListView(),
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
ToggleFlashlightButton(controller: controller),
StartStopMobileScannerButton(controller: controller),
const Spacer(),
SwitchCameraButton(controller: controller),
AnalyzeImageFromGalleryButton(controller: controller),
],
),
],
),
),
),
],
),
);
}
@override
Future<void> dispose() async {
super.dispose();
await controller.dispose();
}
}