flutter_barcode_reader 插件似乎不再可用。
由于还有许多其他库提供了更多更好的
条码扫描功能,我决定停止
这个项目的开发。
为了专注于您关于使用模拟器扫描二维码的问题,我已经设法从虚拟场景中扫描二维码。
这是我用来模拟的sample app:
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:barcode_scan/barcode_scan.dart';
import 'package:flutter/services.dart';
void main() => runApp(MaterialApp(
debugShowCheckedModeBanner: false,
home: HomePage(),
));
class HomePage extends StatefulWidget {
@override
HomePageState createState() {
return new HomePageState();
}
}
class HomePageState extends State<HomePage> {
String result = "Hey there !";
Future _scanQR() async {
try {
String qrResult = await BarcodeScanner.scan();
setState(() {
result = qrResult;
});
} on PlatformException catch (ex) {
if (ex.code == BarcodeScanner.CameraAccessDenied) {
setState(() {
result = "Camera permission was denied";
});
} else {
setState(() {
result = "Unknown Error $ex";
});
}
} on FormatException {
setState(() {
result = "You pressed the back button before scanning anything";
});
} catch (ex) {
setState(() {
result = "Unknown Error $ex";
});
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("QR Scanner"),
),
body: Center(
child: Text(
result,
style: new TextStyle(fontSize: 30.0, fontWeight: FontWeight.bold),
),
),
floatingActionButton: FloatingActionButton.extended(
icon: Icon(Icons.camera_alt),
label: Text("Scan"),
onPressed: _scanQR,
),
floatingActionButtonLocation: FloatingActionButtonLocation.centerFloat,
);
}
}
由于您没有提供示例,我无法确定问题出在插件还是实现上。或许你可以试试pub.dev中提供的其他插件: