What should I do if I can't cancel the notification in the Android notification bar?

1. If advertisement information appears in the notification bar of mobile phone, just open the drop-down notification bar, press and hold the notification bar information to be cleared, and an application message will pop up, then press and hold the application name of the notification bar to be cleared, and an application message will pop up, and then click "Application Information".

2. After that, you can find a check option to display the notification in the "Application Information" settings of the corresponding application. If unchecked, you can cancel pushing messages to the Android notification bar.

3. After unchecking, a confirmation dialog box will pop up, and you can choose OK.

4. After clicking OK, the Android notification bar will not display the push information of the corresponding application in the future, and the Android phone will be clean in the future. If you need to restore the application notification bar information due to a wrong setting, the method is to find "Application Manager" in the phone settings, then find the application that needs to be restored, click Enter and check again.