AnalyticsService.java

public class AnalyticsService extends JobService {

	@Override
	public boolean onStartJob(JobParameters params) {
		//let's update the analytics stuff when the job starts
		//you can skip this method if it seems complex. we will understand this in GreenDAO tutorials
		updateAnaliticsData();

		//return false if the task is small and it will finish inside this onStartJob method or else true if your task is bigger
		//I am returning true because I am running a network operation which will use a background thread
		return true;
	}

	private void updateAnaliticsData() {
	
	//Here I am getting the analytics data from my local database and sending to server.
	//skip this part if it's looking complex
	
		final AnalyticsRestApiClient client = new AnalyticsRestApiClient();
		final List<ActivityData> events = DatabaseContext.getInstance().getDaoSession().getActivityDataDao().loadAll();
		if (events.size() > 0) {

			new AsyncTask<Void, Void, RestApiResult>() {
				RestApiResult result = null;

				@Override
				protected RestApiResult doInBackground(Void... voids) {
					try {
						result = client.updateAnalytics(LocationSessionUtils.getConsumerLocationInfo(), events);
					} catch (Exception e) {
						e.printStackTrace();
					}

					return result;
				}

				@Override
				protected void onPostExecute(RestApiResult pResult) {
				//Here I am cheking the result from server, if the result is perfect then I am deleting the local data.

					if (result != null && result.getStatus() != null && !result.getStatus().isError()) {
						DatabaseContext.getInstance().getDaoSession().getActivityDataDao().deleteAll();
						Log.e("JOB SCHEDULER SERVICE", "job started and continued properly");
					}
				}
			}.execute();

		}

	}

	@Override
	public boolean onStopJob(JobParameters params) {
		Log.e("JOB SCHEDULER SERVICE", "job stopped");
		
		//return false when you don't want to restart the job again after stopping
		//or else return true if you want to retry
		
		//I am returning true, because I want to restart the task after stopping
		return true;
	}

}