如何仅使用包名称以编程方式打开 Flutter 应用程序

Question

我正在尝试仅使用包名称从另一个 flutter 应用程序打开 flutter 应用程序。它不是深度链接，而只是简单地打开设备中安装的应用程序。还想共享一些数据并在 flutter 应用程序中接收这些数据。

我的第一个（本机）应用程序，我用一些文本数据调用我的 flutter 应用程序：-

var intent = context.packageManager.getLaunchIntentForPackage(packageName)
    if (intent == null) {
        intent = Intent(Intent.ACTION_VIEW)
        intent.data = Uri.parse("market://details?id=$packageName")
        val bundle = Bundle()
        bundle.putString("user_id", "1111")
        intent.putExtra("data", bundle)
        intent.setType("text/plain")
    }
    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
    context.startActivity(intent)

我正在使用方法通道。

class _MyHomePageState extends State<MyHomePage> {

      static const methodChannel = MethodChannel("samples.flutter.dev/battery");
    
      @override
      Widget build(BuildContext context) {
        return Scaffold(
          appBar: AppBar(
            title: Text(widget.title),
          ),
          body: Center(
            child: Column(
              children: <Widget>[
                ElevatedButton(
                    onPressed: () async {
                      openApp();
                    },
                    child: Text("Please work this time"))
              ],
            ),
          ),
        );
      }
    
      static Future<bool?> openApp() async {
        return await methodChannel.invokeMethod<bool>("getOpenApp");
      }
    }

现在 Activity 类是这样的：-

class MainActivity : FlutterActivity() {
//private var sharedText: String? = null
override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    val intent = intent
    val action = intent.action
    val type = intent.type
    if (Intent.ACTION_SEND == action && type != null) {
        if ("text/plain" == type) {
           // handleSendText(intent) // Handle text being sent
        }
    }
}
private val CHANNEL = "samples.flutter.dev/battery"

override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
    GeneratedPluginRegistrant.registerWith(flutterEngine)
    MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL)
        .setMethodCallHandler { call: MethodCall, result: MethodChannel.Result ->
            if (call.method.contentEquals("getOpenApp")) {
                var userId = "No data received"
                val bundle: Bundle? = intent.getBundleExtra("data");
                //val bundle = intent.getBundleExtra("data");
            
                if (bundle!=null){
                    userId = bundle.getString("user_id").toString()
                    Log.d("userid","is equals to: $userId")
                    System.out.print("userid ki value : $userId")
                }else{
                    Log.d("empty","is equals to: empty hai ")
                }
                result.success(200)
                //sharedText = null
            }
        }
}

}

请让我知道我在这里犯了什么错误，因为我每次都收到空包。

Answer 1

就我而言，我使用这个函数

public void startNewActivity(Context context, String packageName) {
    Intent intent = context.getPackageManager().getLaunchIntentForPackage(packageName);
    if (intent == null) {
        // Bring user to the market or let them choose an app?
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setData(Uri.parse("market://details?id=" + packageName));
    }
    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    context.startActivity(intent);
}

当我设置标志时，Intent.FLAG_ACTIVITY_NEW_TASK它起作用了！