Overridden to indicate that the receiver can prevent the specified gesture recognizer from recognizing its gesture.
SDKs
- iOS 3.2+
- tvOS 9.0+
Framework
- UIKit
Declaration
func canPrevent(_ preventedGestureRecognizer: UIGestureParameters
preventedGestureRecognizerAn instance of a subclass of
UIGesture.Recognizer
Return Value
true to indicate that the receiver can block prevented from recognizing its gesture, otherwise false.
Discussion
Overriding these methods enables the same behavior as implementing the UIGesture methods gesture and gesture. However, by overriding them, subclasses can define class-wide prevention rules. For example, a UITap object never prevents another UITap object with a higher tap count.