barcode_scanner_without_controller.dart
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import 'package:flutter/material.dart';
import 'package:mobile_scanner/mobile_scanner.dart';
class BarcodeScannerWithoutController extends StatefulWidget {
const BarcodeScannerWithoutController({Key? key}) : super(key: key);
@override
_BarcodeScannerWithoutControllerState createState() =>
_BarcodeScannerWithoutControllerState();
}
class _BarcodeScannerWithoutControllerState
extends State<BarcodeScannerWithoutController>
with SingleTickerProviderStateMixin {
String? barcode;
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
backgroundColor: Colors.black,
body: Builder(builder: (context) {
return Stack(
children: [
MobileScanner(
fit: BoxFit.contain,
onDetect: (barcode, args) {
if (this.barcode != barcode.rawValue) {
setState(() {
this.barcode = barcode.rawValue;
});
}
}),
Align(
alignment: Alignment.bottomCenter,
child: Container(
alignment: Alignment.bottomCenter,
height: 100,
color: Colors.black.withOpacity(0.4),
child: Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
Center(
child: SizedBox(
width: MediaQuery.of(context).size.width - 120,
height: 50,
child: FittedBox(
child: Text(
barcode ?? 'Scan something!',
overflow: TextOverflow.fade,
style: Theme.of(context)
.textTheme
.headline4!
.copyWith(color: Colors.white),
),
),
),
),
],
),
),
),
],
);
}),
),
);
}
}