Implementing the JobService

Our JobService subclass is the entity that is going to do the hard work and receive the callbacks as soon as all the criteria specified in the JobInfo are met. To implement our own service, we have to extend from JobService and override the start and stop callbacks, as shown in the following code:

public class AccountBackupJobService extends JobService {
    @Override
    public boolean onStartJob(JobParameters params) {
      // Start your job here
        return false;
    } 
    @Override
    public boolean onStopJob(JobParameters params) {
        // Stop your job here
        return false;
    }
}

The onStartJob callback function runs on the main thread, and if the job needs to do asynchronous processing then it should return true to indicate it's still doing work on a background thread. The callback function also receives the extra parameters specified in the JobInfo bundle.

onStopJob is automatically invoked by the system when it requires to cancel the job...