Evernote Android_JOB onRunJob() method is never called

I have implemented Evernote Android Job in my android application through

implementation 'com.evernote:android-job:1.2.6'

And I have define as signleton to get instance I have initiated it in my Application class through

 JobManager.create(this).addJobCreator(new CreatingJob());

And I have two classes which are JOB CREATING CLASS

  public class CreatingJob implements JobCreator {
    @Nullable
    @Override
    public Job create(@NonNull String tag) {
        switch (tag) {
            case SyncMasterDataJOB.TAG:
                return new SyncMasterDataJOB();
        }
        return null;
    }
}

JOB CLASS

    public class SyncMasterDataJOB extends Job  {
    public static final String TAG = "job_note_sync";


    @NonNull
    @Override
    protected Result onRunJob(@NonNull Params params) {
        //Doing my Task HERE
        MyLog.ShowELog("JOB STARTED", "Job Has been Started");
        MyToast.Lmsg(getContext(), "Job Has been Started");
        return Result.SUCCESS;
    }


    public static void scheduleJob() {
        Set<JobRequest> jobRequests = JobManager.instance().getAllJobRequestsForTag(SyncMasterDataJOB.TAG);
        if (!jobRequests.isEmpty()) {
            return;
        }
        new JobRequest.Builder(SyncMasterDataJOB.TAG)
              .setPeriodic(MIN_INTERVAL, MIN_FLEX)
               .build()
                .schedule();
    }


}

But the Problem is My onRunJob() method is never called. I am new to Android JOBS. Can anyone tell me where i am doing wrong?

I am Taking reference from here

Job creator class ->

public class CreateJob implements JobCreator {

    private Context context;

    public CreateJob(Context context){
        this.context = context;
    }

    //  Here we have to register each of the jobs...
    @Nullable
    @Override
    public Job create(@NonNull String tag) {
        switch (tag) {
            case CurrentWeatherUpdateJob.TAG:
                return new CurrentWeatherUpdateJob();
            default:
                return null;
        }
    }
}

this is where i am registering my JobCreator.

//  To use StartingPoint Anywhere in our app
//  else you have to Instantiate StartingPoint inside every Activities on create...
public class StartingPoint extends Application {

    @Override
    public void onCreate() {
        super.onCreate();

        //  Create Job is a class that registers all the Jobs...
        JobManager.create(this).addJobCreator(new CreateJob(getApplicationContext()));

    }
}

This is your Jobs Subclass ->

public class CurrentWeatherUpdateJob extends Job {

    public static final String TAG = "CurrentWeatherUpdateJob";

    //  Update Weather Data every 15 Minutes...
    private static final int CURRENTWEATHERUPDATE_TIMEINTERVAL = 15 * 60 * 1000;

    //  Interface that provides Data...
    private ApiInterface service;

    //  For Celcius - metric / Kelvin - imperial
    private String UnitType = "metric";

    public CurrentWeatherUpdateJob() {
        service = APIClient.getRetrofit_Weather().create(ApiInterface.class);
    }

    private static void ScheduleJobEvery15Minutes() {
        //  Scheduling Job After every 15 minutes...
        new JobRequest.Builder(TAG)
                .setPeriodic(CURRENTWEATHERUPDATE_TIMEINTERVAL)
                .setRequiredNetworkType(JobRequest.NetworkType.CONNECTED)
                .setRequirementsEnforced(true)
                .setUpdateCurrent(true)
                .build()
                .schedule();
    }

    // implement your onRunJob method here
}

Call your ScheduleJobEvery15Minutes() method from your activity you want.