iOS: UIVIew touches delegates vs single tap recognizer

Question

I am handling Touches delegates and UITapGestureRecognizer for single tap. Following are the methods. When I single tap on my View, I get three events in order of TouchesBegan, SingleTap, and TouchesEnded. Is there anyway to stop TouchesEnded event when I have SingleTap detected? Basicaaly I don't want to perform tasks in TouchesEnded if TouchesMoved didn't happen. I have done this using failTouchEnded BOOL variable in SingleTap and checking it in TouchesEnded but not sure if it is a good idea!

   - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    }

    - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
          failTouchEnded = NO;
    }

    - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
          if(failTouchEnded) return;

    }

    - (void)GestureView:(GestureView*)view handleSignleTap:(UITapGestureRecognizer*)recognizer {
          failTouchEnded = YES;
    }

Your idea it's right... I always use it to solve similar problem ! — Fry, Jan 07 '13 at 15:40
Great! I was wondering there might be something similar requireGestureRecognizerToFail method! — Paresh Masani, Jan 07 '13 at 17:14

score 0 · Answer 1 · answered Jan 07 '13 at 17:15

gestureRecognizer has a property cancelsTouchesInView. if it is YES (which is default) cancels the touches if the gesture recognizer recognizes the gesture. So you will get a touches canceled instead of touches ended. You should set delaysTouchesEnded to YES too if it is not YES

iOS: UIVIew touches delegates vs single tap recognizer

1 Answers1