run service even if the application is closed (kil

Question

I want that this service run even if the application is closed (kiiled) or even if the user dont start the app. i want the service start after the application is installed and from this point, the service should run always.

public class notifications extends Service {

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

        @Override
    public void onCreate() {
    }

    @Override
    public void onStart(Intent intent, int startId) {
                final Handler handler = new Handler();
                final Runnable runb = new Runnable()
                {
                    public void run()
                    {
                        Toast.makeText(getApplicationContext(), " Service Started", Toast.LENGTH_LONG).show();
                        handler.postDelayed(this, 10000);
                    }
                };
                handler.postDelayed(runb, 0);

    }
    @Override
    public void onDestroy() {

    }
}*/

public class notifications extends IntentService
{
        private Timer mBackGroundTimer;
        public notifications()
    {
        super("myservice");
        this.mBackGroundTimer=new Timer();
    }
        @Override
        protected void onHandleIntent(Intent intent)
    {
        // TODO Auto-generated method stub
        mBackGroundTimer.schedule(new TimerTask()
        {
            public void run()
            {
                try
                {
                        Notification("This is message from Dipak Keshariya (Android Application Developer)", "This is Android Notification Message");
                }
                catch (Exception e)
                {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        },1000, 2000);
    } // END onHandleIntent()
        private void mStopTimer()
    {
        //Call this whenever you need to stop the service
        mBackGroundTimer.cancel();
    }

        private void Notification(String notificationTitle, String notificationMessage) {
            NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
            android.app.Notification notification = new android.app.Notification(R.drawable.ic_launcher, "A New Message from Dipak Keshariya (Android Developer)!",
            System.currentTimeMillis());

            Intent notificationIntent = new Intent(this, MainActivity.class);
            PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
            notification.setLatestEventInfo(getApplicationContext(), notificationTitle, notificationMessage, pendingIntent);
            notificationManager.notify(10001, notification);
        }
}

how i can do that?

Answer 1

You need to implement the OnStartCommand method of the Service class and in it, return Service.START_STICKY. That will do the trick. If you kill the application, the service will continue to run in the background. However, if you restart your phone, I think you need to implement something else in your app, as well, a boot service or something like that.

Answer 2

As you requirement is to run the service in the background. you are on the right track to use the service because this is meant for background running purpose only.

from the activitiy you can start the service by

startService(new Intent(activityName.this, serviceName.class));

or if your application is not having any activity then you can make the service as default and main launcher of the application by putting

<service android:name="name of the service" >
 <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
 </service>

Answer 3

Looking at your code, it appears you want your service to periodically give notifications.

As far as having it run continuously goes, keep in mind that by design, the Android system may terminate your service process at any time. You can influence this a bit, but you cannot prevent the system from killing your service.

So for your periodical actions, it would be best to use AlarmManager with a recurring alarm. Your service would then basically be one-shot, i.e. perform the action once and then exit.

For some code, look here for example:

Android: Alarm Manager

Answer 4

I think answer to this question is this : https://developer.android.com/training/sync-adapters/creating-sync-adapter.html

Sync Adapters introduced in Google I/O 2013.