Problems with android alarmmanager when the app is closed-CodePudding

During my development of a small android app, I have a problem to get an alarm manager running when the app is terminated by the user. While when the app is running in the foreground or background everything works fine.

I have done the following steps:

AndroidManifest.xml

<receiver android:name="MyBroadcastReceiver" ></receiver>

MainActivity.java

Within the OnClick method of a button I call

startAlert( x*60*1000);

x is a class-wide visible variable

public void startAlert(long timeInMillis){ 
    Intent intent = new Intent(this, MyBroadcastReceiver.class);

    PendingIntent pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), 234324243, intent, PendingIntent.FLAG_UPDATE_CURRENT);

    AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP,System.currentTimeMillis() (timeInMillis),pendingIntent);
    }
    Toast.makeText(this, "Alarm in "   x   " Minuten",Toast.LENGTH_LONG).show();
}

MyBroacastReciever.java

public void onReceive(Context context, Intent intent) {
     MediaPlayer player = MediaPlayer.create(context,MainActivity.link); 
                                         player.start();
     Toast.makeText(context, "Alarm....", Toast.LENGTH_LONG).show();}

What can I do to get the alarmManager sucessfully running, when the app is closed?

CodePudding user response：

You could put the alarm manager in the service. The foreground service is used to keep our application alive even though the main application has been quit by the user. And then the alarm manager could trigger the code in the broadcast receiver class

CodePudding user response：

Ok i will give this a chance. Is it also necessary to migrate the intent and pending indent in the broadcastreceiver?