Android notification doesn't disappear after clicking the notifcation

Question

If got some issues with a notification I want to show in the notification bar. Although I set the notification flag to Notification.DEFAULT_LIGHTS & Notification.F

Answer 1

Remove a notification

Notifications remain visible until one of the following happens:

1. The user dismisses the notification.
2. The user clicks the notification, and you called setAutoCancel() when you created the notification.
3. You call cancel() for a specific notification ID. This method also deletes ongoing notifications.
4. You call cancelAll(), which removes all of the notifications you previously issued.
5. If you set a timeout when creating a notification using setTimeoutAfter(), the system cancels the notification after the specified duration elapses. If required, you can cancel a notification before the specified timeout duration elapses.

For more details see: https://developer.android.com/training/notify-user/build-notification?hl=en