I have a Worker
instance that needs to run every 24 hours which is pretty simple considering the PeriodicWorkRequest
API. But here's the catch.
If the user initiates the work at say 8 PM, I need the first instance of the work manager to run at 9 AM the next morning and then follow the 24-hour periodic constraint.
I looked hereand I found that the OneTimeWorkRequest API has a setInitialDelay()
function that can be used but I wasn't able to find anything for the PeriodicWork
API.
Ther are some hacks for this such as I can use the OneTimeWork
with the initial delay and then schedule a PeriodicWork
from there but it's kinda a dirty hack.
Is there any way to do this with just the PeriodicWorkRequest
API?
On the new version of Work manager (Version 2.1.0-alpha02 released on May 16, 2019) PeriodicWorkRequests now support initial delays. You can use the setInitialDelay method on PeriodicWorkRequest.Builder to set an initial delay.
Example:
PeriodicWorkRequest workRequest = new PeriodicWorkRequest.Builder(
WorkerReminderPeriodic.class,
24,
TimeUnit.HOURS,
PeriodicWorkRequest.MIN_PERIODIC_FLEX_MILLIS,
TimeUnit.MILLISECONDS)
.setInitialDelay(1, TimeUnit.HOURS)
.addTag("send_reminder_periodic")
.build();
WorkManager.getInstance()
.enqueueUniquePeriodicWork("send_reminder_periodic", ExistingPeriodicWorkPolicy.REPLACE, workRequest);