Flutter使用Scheme方式App内或浏览器打开另一个App

pubspec.yaml文件新增依赖

dependencies:url_launcher: ^6.1.11

await launchUrlString("flutterScheme://");//打开首页
await launchUrlString("flutterScheme://detail");//打开指定页面
await launchUrlString("flutterScheme://detail?name=xxxx&age=18");//打开指定页面带参数

接收Scheme的参数

appscheme: ^1.0.8

 @override
  void initState() {
    super.initState();
      AppScheme? appScheme = AppSchemeImpl.getInstance();
      WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
      appScheme!.getInitScheme().then((value) {
        if (value != null) {
          String dataString = value.dataString ?? '';
          Uri url = Uri.parse(dataString.replaceFirst(
            'flutterScheme://',
            'http://path/',
          ));
          String name= url.queryParameters["name"];
          String int= url.queryParameters["age"];
        }
      });
    });
  }

需要被打开的APP

Android

<intent-filter>
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
                <category android:name="android.intent.category.APP_BROWSER" />
                <data android:scheme="flutterScheme"
                    android:host="detail"
                    />
            intent-filter>

注意：如果你需要打开一个新的app进程，而不是内嵌方式，请修改activity的启动模式launchMode为singleTask

  android:launchMode="singleTask"

IOS

打开Xcode->Info->URL Types设置URL Scheme

ios/Runner/Info.plist

DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<array>
		<dict>
			<key>CFBundleTypeRolekey>
			<string>Editorstring>
			<key>CFBundleURLSchemeskey>
			<array>
				<string>flutterScheme://detail?name=xxxx&age=18string>
			array>
		dict>
	array>
dict>
plist>