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iphoneiosuiviewuitapgesturerecognizerlong-press

iPhone iOS how to add a UILongPressGestureRecognizer and UITapGestureRecognizer to the same control and prevent conflict?

I'm building an iPhone app that would let the user rearrange some of the UI elements on the screen.

How can I add a tap gesture recognizer and a long press gesture recognizer to the same UIView? When I lift up the finger from the long press, the tap gesture recognizer fires. How can I temporarily disable the tap gesture recognizer or prevent it from firing when the user is performing a long press?

Thank you!

Solution

  • To allow both gestures to work together, implement the following delegate method:

    - (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
    return YES;
}

    To make it so that the long press has first priority, do:

    [tapGesture requireGestureRecognizerToFail:longPress];