How to schedule notifications using WorkManager?
Solution 1
WorkManager
isn't appropriate for work that needs to happen at a particular time.
You should use AlarmManager
, and specifically AlarmManagerCompat.setExactAndAllowWhileIdle(), to get a callback at a specific time.
Solution 2
You can show notification with the help of workmanager. Workmanger can be used for scheduling single occurrence task or periodic occurrence task as well as we can schedule task at a particular time.
OneTimeWorkRequest request= new OneTimeWorkRequest.Builder(CustomWorkerClass.class)
.setInitialDelay(delayedTime, TimeUnit.MILLISECONDS)
.addTag("TAG")
.build();
'delayedTime' -> calculate time when to trigger notification
for more implementation details click here. To read more regarding workmanager click here
Solution 3
According to the Android official documentation about worker manager: "These APIs let you create a task and hand it off to WorkManager to run immediately or at an appropriate time". In my app, I set a work to be activated 20 seconds after:
// Schedule the time
val request= OneTimeWorkRequestBuilder<YourWork>().setInitialDelay(20, TimeUnit.SECONDS).build()
WorkManager.getInstance().enqueue(request)
Solution 4
As ianhanniballake stated
WorkManager isn't appropriate for work that needs to happen at a particular time.
But this can be set in near future of the exact time, depending on the state of the battery optimization.
An workaround will be like:
// Time to show notification at
LocalDateTime timeAt = LocalDate.now().atTime(20, 0);
LocalDateTime timeNow = LocalDateTime.now();
OneTimeWorkRequest.Builder workBuilder = new OneTimeWorkRequest.Builder(NotificationWorker.class);
// I just need to set an delay here
workBuilder.setInitialDelay(Duration.between(timeNow, timeAt));
// This is just to complete the example
WorkManager.getInstance().enqueueUniqueWork(UNIQUE_WORK_SHOW_NOTIFICATION,
ExistingWorkPolicy.REPLACE,
workBuilder.build());
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Ankur Gupta
Updated on June 15, 2022Comments
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Ankur Gupta about 2 years
I want to schedule a notification everytime the user add a note in the database for a specific time. While there are multiple ways to do it using AlarmManager, BroadcastReceiver etc. How can it be done using WorkManager?