UpdateJobIntentService.java

import android.content.Context;
import android.content.Intent;
import android.support.v4.app.JobIntentService;
import android.util.Log;
import android.widget.Toast;
import 
/**
 * Example implementation of a JobIntentService.
 */
public class UpdateJobIntentService extends JobIntentService {
    static final int JOB_ID = 1000;
    static final String WORK_DOWNLOAD_ARTWORK = ".DOWNLOAD_ARTWORK";
    ArtworkDownloader mDownloader;
    
    static void enqueueWork(Context context, Intent work) {
        enqueueWork(context, Update.class, JOB_ID, work);
    }
    
    @Override
    public void onCreate() {
        super.onCreate();
        
        mDownloader = ArtworkDownloader.getSequencialDownloader();
    }

    @Override
    protected void onHandleWork(Intent intent) {
      // enqueueWork()에 의해 적재된 인텐트는 여기로 전달됩니다.
      if (WORK_DOWNLOAD_ARTWORK.equals(intent.getAction())) {
          mDownloader.download(intent.getStringExtra("URL"))
      }
    }
  
    @Override
    public boolean onStopCurrentWork() {
      // 현재 처리 중인 동작들을 중지해야 할 경우 
      return !mDownloader.isFinished();
    }
}

onHandleWork does work. If your code is having this ,
@OverRide
public IBinder onBind(Intent intent) {
return null;
}
remove it and it will work.

why? how?

How to call jobintentservice class from activity?