android - Periodic daily work requests using WorkManager

Question

How to properly use the new WorkManager from Android Jetpack to schedule a one per day periodic work that should do some action on a daily basis and exactly one time?

The idea was to check if the work with a given tag already exists using WorkManager and to start a new periodic work otherwise.

I've tried to do it using next approach:

public static final String CALL_INFO_WORKER = "Call worker";

...

WorkManager workManager = WorkManager.getInstance();
List<WorkStatus> value = workManager.getStatusesByTag(CALL_INFO_WORKER).getValue();
if (value == null) {
    WorkRequest callDataRequest = new PeriodicWorkRequest.Builder(CallInfoWorker.class,
                24, TimeUnit.HOURS, 3, TimeUnit.HOURS)
                .addTag(CALL_INFO_WORKER)
                .build();
    workManager.enqueue(callDataRequest);
}

But the value is always null, even if I put a breakpoint inside the Worker's doWork() method (so it is definitely in progress) and check the work status from another thread.

Answer 1

You can now use enqueueUniquePeriodicWork method. It was added in 1.0.0-alpha03 release of the WorkManager.