Android JobScheduler. Can I schedule job every 15 seconds

Question

My code is work. But I'm not sure that this will work on all devices and always. Can I use JobScheduler like this?

Start method:

public static void schedule() {
    JobScheduler scheduler = (JobScheduler) context.getSystemService(Context.JOB_SCHEDULER_SERVICE);

    JobInfo job = new JobInfo.Builder(1, new ComponentName(context, MySchedulerService.class))
            .setMinimumLatency(15000)
            .build();

    scheduler.schedule(job);
}

Service:

public static class MySchedulerService extends JobService {

    public boolean onStartJob(JobParameters params) {
        schedule();
       /*   Business code   */
        stopSelf();
        return false;
    }

    public boolean onStopJob(JobParameters params) {
        return false;
    }
}

Answer 1

Can I schedule job every 15 seconds

No. Minimum duration between two schedule is around 15 minutes. You can easily query for this information using getMinPeriodMillis()

Note:

Attempting to declare a smaller period that this when scheduling a job will result in a job that is still periodic, but will run with this effective period.

For setMinimumLatency, based on the documentation:

Milliseconds before which this job will not be considered for execution.

This doesn't mean the job will be executed immediately after 15 seconds and won't be reliable from Android N when first phase of doze mode kicks in.