Vfrdtyky

I know that this question has been asked multiple times. And from other SO questions, this is what I tried. I am returning device location and phone state every 15 mins to SQLITE and sending it to server the next day. How to avoid service getting killed by Android when phone is idle? (Converting to System app is out of question.)

@Override

    public void onCreate() {

        Log.e("onCreate", "Service Method");



        mTelephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);



        if (mTimer != null) {// Cancel if already existed

            mTimer.cancel();

            mTimer = null;

        }

        mTimer = new Timer(); //recreate new

        mTimer.scheduleAtFixedRate(new ConnectActivity(), 0, 900000); //Schedule task

    }

@Override

    public int onStartCommand(Intent intent, int flags, int startId) {



        // We want this service to continue running until it is explicitly

        // stopped, so return sticky.

        startServiceForeground(intent, flags, startId);

        return Service.START_STICKY;

    }



    public int startServiceForeground(Intent intent, int flags, int startId) {



        Intent notificationIntent = new Intent(this, DeviceStatusService.class);

        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);

        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);



        Notification notification = new NotificationCompat.Builder(this, "channel_id")

                .setContentTitle("NOTIFICATION NAME")

                .setAutoCancel(true)

                .setDefaults(Notification.DEFAULT_ALL)

                .setWhen(System.currentTimeMillis())

                .setSmallIcon(R.mipmap.default)

                .setPriority(Notification.PRIORITY_MAX)

                .setContentIntent(pendingIntent)

                .setOngoing(true)

                .build();



        startForeground(300, notification);



        return START_STICKY;

    }



    @Override

    public void onTaskRemoved(Intent rootIntent) {

        super.onTaskRemoved(rootIntent);

        Intent intent=new Intent(this,this.getClass());

        startService(intent);

    }



    @Override

    public void onDestroy() {

        Log.e("onDestroy", "Service Method");

        mTimer.cancel(); //For Cancel Timer

        mTimer.purge();

        mTimer = null;

        super.onDestroy();

        Intent broadcastIntent = new Intent("RestartService");

        sendBroadcast(broadcastIntent);

    }

Also, I have used this manifest.xml:

    <receiver

        android:name=".ServiceRestarterBroadcastReceiver"

        android:enabled="true"

        android:label="RestartServiceWhenStopped">

        <intent-filter>

            <action android:name="RestartService" />

        </intent-filter>

    </receiver>



<service

        android:name=".DeviceStatusService"

        android:enabled="true"

        android:stopWithTask="false"/>

ServiceRestarterBroadcastReceiver.class

public class ServiceRestarterBroadcastReceiver extends BroadcastReceiver {

@Override

public void onReceive(final Context context, Intent intent) {

    /*context.startService(new Intent(context.getApplicationContext(), DeviceStatusService.class));*/

    new Handler().postDelayed(new Runnable() {

        @Override

        public void run() {

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

                context.startForegroundService(new Intent(context, DeviceStatusService.class));

            } else {

                context.startService(new Intent(context.getApplicationContext(), DeviceStatusService.class));

            }

        }

    }, 60000);



    }

}

The problem that I face is if the screen is off and the device goes to idle state, somehow the service is either killed or does not return any value to the DB.

P.S: It worked fine when the device is in use. This problem persists especially when you do not use the device.

I think, you should not use a Service for this purpose. You should use some sort of task shedulers. There are a lot of them - AlertManager, JobSheduler etc. And sometime it's really tricky to choose one. I recommended to start from this article: https://medium.com/mindorks/android-scheduling-background-services-a-developers-nightmare-c573807c2705