Returns a Boolean value indicating whether appearance methods are forwarded to child view controllers.
- iOS 6.0+
- tvOS 9.0+
YES if appearance methods are forwarded or
NO if they are not.
This method is called to determine whether to automatically forward appearance-related containment callbacks to child view controllers.
The default implementation returns
YES. Subclasses of the
UIView class that implement containment logic may override this method to control how these methods are forwarded. If you override this method and return
NO, you are responsible for telling the child when its views are going to appear or disappear. You do this by calling the child view controller's