当应用程序完全关闭时，活动不会在android 11上打开

Question

我可以通过firebase FCM打开活动，但这只适用于android

public void onMessageReceived(@NonNull RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);           

        if(remoteMessage.getData().size() > 0){   
            
            for(String key : remoteMessage.getData().keySet()){                  

                acao = remoteMessage.getData().get(key);                    

            }


            switch (acao){

                case "screenStart":                        
                    Intent i = new Intent(this, DisplayActivity.class);
                    i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                    i.putExtra("key", "start");
                    startActivity(i);
                    break;

                case "screenStop":    
                    Intent in = new Intent(this, DisplayActivity.class);
                    in.putExtra("key", "stop");
                    in.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                    startActivity(in);
                    break;    

                default:
                    Log.d("TAG", "default................");
            }
        }
    }

Answer 1

这可能是由于对从后台开始活动的新限制，请查看以下链接：https://developer.android.com/guide/components/activities/background-starts

您可以尝试使用PendingIntent启动活动：

final Intent startIntent = new Intent(getApplicationContext(), YourActivity.class);
startIntent.setAction(Intent.ACTION_MAIN);
startIntent.addCategory(Intent.CATEGORY_LAUNCHER);
PendingIntent contentIntent = PendingIntent.getActivity(getApplicationContext(), 1, startIntent, 0);