Block third-party keyboards in the app

IOS8 Open the ability to install third-party keyboards, but in project development, there are situations where you need to disable a third-party keyboard. For example, a custom button is required on the numeric keypad, but when a third-party keyboard pops up, the button is covered, and in this case, the best option is to disable the third-party keyboard. In Uiapplicationdelegate, there is a way to disable a third-party keyboard.

Shielding third-party keyboards-(BOOL) Application: (UIApplication *) application Shouldallowextensionpointidentifier: (NSString *) extensionpointidentifier{    return NO;}

Block third-party keyboards in the app