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main.dart
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main.dart
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import 'package:flutter/material.dart';
import 'package:open_app/open_app.dart';
void main() => runApp(MyApp());
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
bool isInstalledApp = false;
String packageName = 'com.tencent.mobileqq';
@override
void initState() {
super.initState();
_isInstalledApp();
}
_isInstalledApp() async {
bool isInstall = await OpenApp.isInstalledApp(packageName);
setState(() {
isInstalledApp = isInstall;
});
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text('Open APP'),
),
body: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Container(
child: Text('应用包名: $packageName'),
),
Container(
child: Text('是否安装该应用: ${isInstalledApp ? '是' : '否'}'),
),
RaisedButton(
onPressed: () async {
if (!isInstalledApp) {
print('未安装该应用');
return;
}
bool result = await OpenApp.openApp(packageName);
print('${result ? '打开成功!' : '打开失败!'}');
},
child: Text('打开App'),
),
],
),
),
);
}
}