work_manager.java

public class UploadWorker extends Worker {

    public UploadWorker(
        @NonNull Context context,
        @NonNull WorkerParameters params) {
        super(context, params);
    }

    @Override
    public Result doWork() {
      // Do the work here--in this case, upload the data to the server.

      uploadData()

      // Indicate whether the task finished successfully with the Result
      return Result.success()
    }
}


// define periodic work request and start it 
PeriodicWorkRequest uploadWorkRequest =
                new PeriodicWorkRequest.Builder(UploadWorker.class, 15, TimeUnit.MINUTES)
                        // setting a backoff on case the work needs to retry
                        .setBackoffCriteria(BackoffPolicy.LINEAR, PeriodicWorkRequest.MIN_BACKOFF_MILLIS, TimeUnit.MILLISECONDS)
                        .build();
  
WorkManager.getInstance(mContext).enqueue(uploadWorkRequest);