[SOLVED] Is there a way to run a task once the same day and every consequent day at the specified time?

Is there a way to run a task once the same day and every consequent day at the specified time?

Is there a way to run a task once the same day and every consequent day at the specified time? I am using a library called "android-job" since it persists the scheduled jobs even after device reboot. I have been struggling to make this library work for my use case with no luck.

Note: the final goal is to start and stop a background service at the specified times every day. For example, I want to stop my service at 8pm and start it again at 8am).

Currently, my code looks like that:

Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 20);
calendar.set(Calendar.MINUTE, 0);

int hour = calendar.get(Calendar.HOUR_OF_DAY);
int minute = calendar.get(Calendar.MINUTE);

long startMs = TimeUnit.MINUTES.toMillis(60 - minute) + TimeUnit.HOURS.toMillis((24 - hour) % 24);
long endMs = startMs + TimeUnit.MINUTES.toMillis(5);


int jobId = new JobRequest.Builder(TAG)
        .setExecutionWindow(startMs, endMs)
        .setPersisted(true)
        .setUpdateCurrent(updateCurrent)
        .build()
        .schedule();`

The console output:

jobInfo success, request{id=11, tag=job_demo_tag}, start 05:00:00, end 05:05:00, reschedule count 0

Solution

You can explore AlarmManager for this. It can be used for cases where you want to have your code execute at specified time even when your app isn't running.

https://developer.android.com/reference/android/app/AlarmManager.html