public class ExerciseJobService extends JobService {
    private Context context;
    public ExerciseJobService(Context context) {
         this.context = context
    }

    @Override
    public boolean onStartJob(JobParameters params) {
        Intent intent = new Intent(context,YOUR_SERVICE.class)
        startForegroundService(intent)
        return true;
   }

    @Override
    public boolean onStopJob(JobParameters params) {
        return true;
    }
}

之后安排工作

private FirebaseJobDispatcher jobDispatcher = FirebaseJobDispatcher(GooglePlayDriver(context)) 
Job myJob = jobDispatcher.newJobBuilder()
                .setService(ExerciseJobService::class.java)
                .setTag("SIMPLE_TAG")
                .setTrigger(Trigger.NOW)
                .build()
jobDispatcher.mustSchedule(myJob)