flutter_barcode_reader/example/lib/main.dart

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import 'dart:async';
import 'package:barcode_scan/barcode_scanner.dart';
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import 'package:flutter/material.dart';
void main() {
runApp(new MyApp());
}
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => new _MyAppState();
}
class _MyAppState extends State<MyApp> {
String barcode = "";
@override
initState() {
super.initState();
}
@override
Widget build(BuildContext context) {
return new MaterialApp(
home: new Scaffold(
appBar: new AppBar(
title: new Text('Barcode Scanner Example'),
),
body: new Center(
child: new Column(
children: <Widget>[
new Container(
child: new MaterialButton(
onPressed: scan, child: new Text("Scan")),
padding: const EdgeInsets.all(8.0),
),
new Text(barcode),
],
),
)),
);
}
Future scan() async {
String barcode = await BarcodeScanner.scan();
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setState(() => this.barcode = barcode);
}
}