JOB SCHEDULER

Element that allow multiple background tasks to be grouped together, in order to minimize battery drain, is based on 3 components

• JobService Service class where task is initiated
• JobInfo Builder pattern to set conditions for task
• JobScheduler Schedule and cancel tasks, launch service

the JobService class relies on 2 methods that are called on the main thread onStartJob() and onStopJob()

here an example using async tasks:

public class MyJobService extends JobService {
	private UpdateAppsAsyncTask updateTask = new UpdateAppsAsyncTask();
 
	@Override
	public boolean onStartJob(JobParameters params) {
		updateTask.execute(params);
		return true; // work has been offloaded
	}
 
	@Override
	public boolean onStopJob(JobParameters jobParameters) {
		return true;
	}
}

There are also parameter that can be set to influence the scheduling of the job:

• minimum latency
• period
• network type
• if task requires the device to be plugged

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