Package apple.uikit.protocol

Interface UIGestureRecognizerDelegate

    • Method Detail

      • gestureRecognizerShouldBeRequiredToFailByGestureRecognizer

        default boolean gestureRecognizerShouldBeRequiredToFailByGestureRecognizer​(UIGestureRecognizer gestureRecognizer,
                                                                           UIGestureRecognizer otherGestureRecognizer)

      • gestureRecognizerShouldReceivePress

        default boolean gestureRecognizerShouldReceivePress​(UIGestureRecognizer gestureRecognizer,
                                                    UIPress press)
        called before pressesBegan:withEvent: is called on the gesture recognizer for a new press. return NO to prevent the gesture recognizer from seeing this press

      • gestureRecognizerShouldReceiveTouch

        default boolean gestureRecognizerShouldReceiveTouch​(UIGestureRecognizer gestureRecognizer,
                                                    UITouch touch)
        called before touchesBegan:withEvent: is called on the gesture recognizer for a new touch. return NO to prevent the gesture recognizer from seeing this touch

      • gestureRecognizerShouldRecognizeSimultaneouslyWithGestureRecognizer

        default boolean gestureRecognizerShouldRecognizeSimultaneouslyWithGestureRecognizer​(UIGestureRecognizer gestureRecognizer,
                                                                                    UIGestureRecognizer otherGestureRecognizer)
        called when the recognition of one of gestureRecognizer or otherGestureRecognizer would be blocked by the other return YES to allow both to recognize simultaneously. the default implementation returns NO (by default no two gestures can be recognized simultaneously) note: returning YES is guaranteed to allow simultaneous recognition. returning NO is not guaranteed to prevent simultaneous recognition, as the other gesture's delegate may return YES

      • gestureRecognizerShouldRequireFailureOfGestureRecognizer

        default boolean gestureRecognizerShouldRequireFailureOfGestureRecognizer​(UIGestureRecognizer gestureRecognizer,
                                                                         UIGestureRecognizer otherGestureRecognizer)
        called once per attempt to recognize, so failure requirements can be determined lazily and may be set up between recognizers across view hierarchies return YES to set up a dynamic failure requirement between gestureRecognizer and otherGestureRecognizer note: returning YES is guaranteed to set up the failure requirement. returning NO does not guarantee that there will not be a failure requirement as the other gesture's counterpart delegate or subclass methods may return YES

      • gestureRecognizerShouldBegin

        default boolean gestureRecognizerShouldBegin​(UIGestureRecognizer gestureRecognizer)
        called when a gesture recognizer attempts to transition out of UIGestureRecognizerStatePossible. returning NO causes it to transition to UIGestureRecognizerStateFailed

      • gestureRecognizerShouldReceiveEvent

        default boolean gestureRecognizerShouldReceiveEvent​(UIGestureRecognizer gestureRecognizer,
                                                    UIEvent event)
        called once before either -gestureRecognizer:shouldReceiveTouch: or -gestureRecognizer:shouldReceivePress: return NO to prevent the gesture recognizer from seeing this event