previewingGestureRecognizerForFailureRelationship
A gesture recognizer suitable for setting up failure requirements for a preview’s (peek’s) gestures.
Declaration
var previewingGestureRecognizerForFailureRelationship: UIGestureRecognizer { get }Discussion
Use this gesture recognizer by implementing a delegate object for it that conforms to the UIGestureRecognizerDelegate protocol. The protocol methods let you prevent a preview (peek) press from interfering with an app’s other supported gestures. For example, you could delay a preview’s presentation until after other gestures fail, or you could allow simultaneous recognition of a press and other gestures during a preview’s presentation.
For more information, see the gestureRecognizer(_:shouldBeRequiredToFailBy:) and gestureRecognizer(_:shouldRequireFailureOf:) methods in UIGestureRecognizerDelegate.