Flutter实现二维码扫描

<uses-permission android:name="android.permission.CAMERA" />    
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

dependencies:
    flutter:
        sdk: flutter
 
    qrscan: ^0.2.22

//引用架包
import 'package:qrscan/qrscan.dart' as qrscan;
//调用方法
String result = await qrscan.scan();

import 'package:flutter/material.dart';
import 'package:qrscan/qrscan.dart' as qrscan;
 
void main() {
  runApp(Demo());
}
 
class Demo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("扫描二维码Demo"),
      ),
      body: Center(
        child: RaisedButton(
          onPressed: getScanner,
          child: Text("扫一扫"),
        ),
      ),
    );
  }
}
 
//扫描二维码
Future getScanner() async {
  //扫描二维码
  String result = await qrscan.scan();
  //输出结果
  print(result);
}