How to keep service alive when remove app from stack

Question

I want to show notification every minute using Alarm Manager, I have implemented below code, it's working fine but the problem is when I remove app from stack the service is not running.

I want keep alive, I have tried START_STICKY in onStartCommand and also used onTaskRemoved but it's same.

I also tried to implement using WakefulIntentService but the problem is same. My code is below.

In MainActivity

    Intent myIntent = new Intent(NotificationDemo.this, MyReceiver.class);

                myIntent.putExtra("title", "2 minutes");

                Random random = new Random();
                int m = random.nextInt(9999 - 1000) + 1000;

                Log.d("m::: In Notification", m + "");
                myIntent.putExtra("id", m);

                pendingIntent = PendingIntent.getBroadcast(NotificationDemo.this, m, myIntent, 0);

                AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
//                alarmManager.setRepeating(AlarmManager.RTC, System.currentTimeMillis(),alarmManager.Inte pendingIntent);
                alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
                        SystemClock.elapsedRealtime(),
                        1 * 60 * 1000,
                        pendingIntent);

MyService

       public class MyAlarmService extends Service {

            private NotificationManager mManager;

            @Override
            public IBinder onBind(Intent arg0) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public void onCreate() {
                // TODO Auto-generated method stub
                super.onCreate();
            }


            @Override
        public int onStartCommand(Intent intent, int flags, int startId) {
        String title = intent.getStringExtra("title");
        int id = intent.getIntExtra("id", 0);
        mManager = (NotificationManager) this.getApplicationContext().getSystemService(this.getApplicationContext().NOTIFICATION_SERVICE);
        Intent intent1 = new Intent(this.getApplicationContext(), MainActivity.class);

        Notification notification = new Notification(R.mipmap.ic_launcher, title, System.currentTimeMillis());
        intent1.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);

        Log.d("id::", id + "");

        PendingIntent pendingNotificationIntent = PendingIntent.getActivity(this.getApplicationContext(), id, intent1, PendingIntent.FLAG_UPDATE_CURRENT);
        notification.flags |= Notification.FLAG_AUTO_CANCEL;
//        notification.setLatestEventInfo(this.getApplicationContext(), "AlarmManagerDemo", "This is a test message!", pendingNotificationIntent);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(MyAlarmService.this);

        notification = builder.setContentTitle(title)
                .setContentText("Hellooo...")
                .setTicker("Good Evening...")
                .setSmallIcon(android.R.drawable.ic_btn_speak_now)
                .setVibrate(new long[]{1000, 1000, 1000, 100})
                .setLights(5, 5, 5)
                .setContentIntent(pendingNotificationIntent).build();

        mManager.notify(id, notification);
        startForeground(1337, notification);
        return START_STICKY;
    }

            @Override
            public void onDestroy() {
                // TODO Auto-generated method stub
                super.onDestroy();
               // sendBroadcast(new Intent("IWillStartAuto"));
            }

            @Override
            public void onTaskRemoved(Intent rootIntent) {
                super.onTaskRemoved(rootIntent);
        //        sendBroadcast(new Intent("IWillStartAuto"));
        //        Intent intent = new Intent(getApplicationContext(),MyReceiver.class);
        //        sendBroadcast(intent);
            }
        }

and this is my receiver

public class MyReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
         String title = intent.getStringExtra("title");
    int id = intent.getIntExtra("id", 0);
    Intent service1 = new Intent(context, MyAlarmService.class);
    service1.putExtra("title", title);
    service1.putExtra("id", id);
    context.startService(service1);

    }
}

In Manifest

<receiver android:name=".MyReceiver">
        <!--<intent-filter>
            <action android:name="IWillStartAuto"/>
        </intent-filter>-->
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>
    <service
        android:name=".MyAlarmService"
        android:enabled="true"
        android:stopWithTask="false" />

Answer 1

You need to start your service in foreground.
You are missing something this in your service OnCreate() method.

startForeground(1337, notification);
return START_STICKY;

And don't stop your service in your activities or fragments onDestroy() methods.