android-notifications

This may be off topic , but I couldn't found anything for it. Is there any limit on the number of notifications android app can display ?I am facing issue after 100 notifications. There is no documentation which states this clearly. Note: This is not really a good idea to show 100 notifications but It is required for certain reasons. Any help would be good. In API23 package com.android.server.notification; NotificationManagerService.java static final int MAX_PACKAGE_NOTIFICATIONS = 50; The limit for notifications and toasts is per app 50 According to @Nirel's answer. 1) I tried to run the code

The notification channels which introduced from Android O (API 26) version.I read about it from the following links: Managing notification channels Google Sample for Creating Channel Questions: If I have multiple numbers of notification then Is it a good idea to create notification channels when the application starts and keep it at ApplicationScope ? public void addNotificationChannels(Context context) { List<NotificationChannel> channels = new ArrayList<>(); channels.add("channel_1"); channels.add("channel_2"); . . channels.add("channel_7"); NotificationManager notificationManager =

I figured out how to make custom views using RemoteViews class. I also know how to use Chronometer and ProgressBar inside of RemoteViews . But how to make a count down View , almost exactly the same as Chronometer but with the difference that it will be counting down instead of up? I tried to copy the source of Chronometer class and modify it so it will fit my needs, but there are annotations like @android.view.RemotableViewMethod , which i can not import to my project. Unfortunately, without annotations it is not working, because RemoteViews is using them to pass values. My second idea was to

I want to implement an NotificationListenerService to get access to all notifications that are posted to the notification bar. I understand that I need to enable access to the Notifications in the Settings with this call: startActivity(new Intent("android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS")); Is there a way to check if the user activated Notification access for my app? Ricardo I managed to find a slight hack to solve this. If you check the source of Settings.Secure , you will see that ENABLED_NOTIFICATION_LISTENERS is annotated with @hide . I don't know if this is intentional or

I'm using the DownloadManager class to programatically download a file. All works fine but I can't get the download completed notifcation to persist. It disappears immediately once the download has completed. Here's my code: Request rqtRequest = new Request(Uri.parse(((URI) vewView.getTag()).toString())); if (Build.VERSION.SDK_INT < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { rqtRequest.setShowRunningNotification(true); } else { rqtRequest.setNotificationVisibility(Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); } ((DownloadManager) getSystemService(DOWNLOAD_SERVICE)).enqueue(rqtRequest); I've

I noticed some of my users are getting this exception. I don't know how to reproduce it, I only have the reports on Crashlytics. Seems to be deep inside Google's code. Out of thousands who have used this code only 39 have had the exception. Any idea what might be wrong? Fatal Exception: java.lang.NullPointerException: Attempt to invoke interface method 'java.util.Iterator java.lang.Iterable.iterator()' on a null object reference at android.app.ApplicationPackageManager.getUserIfProfile(ApplicationPackageManager.java:2141) at android.app.ApplicationPackageManager.getUserBadgeForDensity