PeriodicWorker не показывает уведомления ⇐ JAVA

[Гость]

I'm using a PeriodicWorker to make a daily backup of my app's data, that is, uploading mu local data to a cloud storage service. However when I use setForegroundAsync(foregroundInfo); it first, shows me a warning (startForegroundService() not allowed due to mAllowStartForeground false: service com.mydomain/androidx.work.impl.foreground.SystemForegroundService) and at the of the process, it gives me the error below

Unable to stop foreground service android.app.BackgroundServiceStartNotAllowedException: Not allowed to start service Intent { act=ACTION_STOP_FOREGROUND cmp=com.mydomain/androidx.work.impl.foreground.SystemForegroundService }: app is in background uid UidRecord{dff373e u0a386 TRNB bg:+3m49s885ms idle change:procadj procs:0 seq(7594403,7591739)} caps=------ at android.app.ContextImpl.startServiceCommon(ContextImpl.java:1945) at android.app.ContextImpl.startService(ContextImpl.java:1900) at android.content.ContextWrapper.startService(ContextWrapper.java:825) at androidx.work.impl.Processor.stopForegroundService(Processor.java:425) at androidx.work.impl.Processor.stopForeground(Processor.java:303) at androidx.work.impl.WorkerWrapper.resolve(WorkerWrapper.java:464) at androidx.work.impl.WorkerWrapper.resetPeriodicAndResolve(WorkerWrapper.java:577) at androidx.work.impl.WorkerWrapper.handleResult(WorkerWrapper.java:480) at androidx.work.impl.WorkerWrapper.onWorkFinished(WorkerWrapper.java:358) at androidx.work.impl.WorkerWrapper$2.run(WorkerWrapper.java:335) at androidx.work.impl.utils.SerialExecutorImpl$Task.run(SerialExecutorImpl.java:96) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644) at java.lang.Thread.run(Thread.java:1012) The "funny" part is the process runs perfectly fine, all the data are perfectly copied to the cloud and nothing is wrong, except the notification that is not shown.

Does anybody has any idea of how I can show the notification even though the application is in the background?

Here is my Worker's code.

public class DatabaseCloudBackupWorker extends Worker { public static final String TAG = DatabaseCloudBackupWorker.class.getName(); @Override public Result doWork() { Result result = Result.failure(); Log.i(TAG, "Starting Database Backup"); this.showProgressNotification(); try { uploadData() result = Result.success(); } catch (Exception e) { Log.e(TAG, "Error") } return result; } private void showProgressNotification() { Log.i(TAG, "Showing Database Backup Progress Notification"); Notification notification = this.newProgressNotification(); ForegroundInfo foregroundInfo; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) { foregroundInfo = new ForegroundInfo(PROGRESS_NOTIFICATION_ID, notification, ServiceInfo.FOREGROUND_SERVICE_TYPE_DATA_SYNC); } else { foregroundInfo = new ForegroundInfo(PROGRESS_NOTIFICATION_ID, notification); } this.setForegroundAsync(foregroundInfo); } private Notification newProgressNotification() { Notification notification = new NotificationCompat.Builder(MyApp.getAppContext(), MyNotificationManager.CHANNEL_ID) .setSmallIcon(R.mipmap.ic_launcher) .setOnlyAlertOnce(true) .setOngoing(true) .setPriority(NotificationCompat.PRIORITY_HIGH) .setProgress(0, 0, true) .setForegroundServiceBehavior(NotificationCompat.FOREGROUND_SERVICE_IMMEDIATE) .setContentTitle("Database Backup") .setContentText("Database Backup in Progress") .build(); return notification; } } Here's the session of my manifest where I set the type of the foreground service

Here's where I create the PeriodicWorkRequest
// Creating Work Request Constraints constraints = new Constraints.Builder().setRequiredNetworkType(NetworkType.UNMETERED).build(); PeriodicWorkRequest workRequest = new PeriodicWorkRequest.Builder(DatabaseCloudBackupWorker.class, 1, TimeUnit.DAYS) .setInitialDelay(initialDelayInMinutes, TimeUnit.MINUTES) .addTag(DatabaseCloudBackupWorker.TAG_PERIODIC_WORKER) .setConstraints(constraints) .setInputData(inputData) .build(); // WorkManager workManager = WorkManager.getInstance(MyApp.getAppContext()); Log.i(TAG, "Enqueuing DatabaseCloudBackupWorker"); Operation operation = workManager.enqueueUniquePeriodicWork(DatabaseCloudBackupWorker.NAME_PERIODIC, ExistingPeriodicWorkPolicy.UPDATE, workRequest);

Источник: https://stackoverflow.com/questions/781 ... ifications