如何取消应用程序在后台运行时收到的通知？

Question

the following code works for me when the notification received while the application run on the foreground.

NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.cancel(notificationID);

but when the notification received while the application on the background then it does not work (the specific notification that I try to delete is not deleted). cancelAll() functtion delete all background and foreground received notifications but I don't want to use it because I want to delete a specific notification.

I am getting notification via FCM(Firebase cloud messaging).

Android 10

thank you

Answer 1

Use

notificationmanger.cancelall();

That will close tour all notifications from any where so you can create them again i hope its helpful

Public Int Helpnotification = 6:

Notificationmanger.notify(notification, Helpnotification);