拖动手势识别器干扰滑动手势识别器(Drag Gesture Recognizer interfere with swipe Gesture Recognizer)

拖动手势识别器干扰滑动手势识别器(Drag Gesture Recognizer interfere with swipe Gesture Recognizer)

我有关于手势识别器的问题。 我在视图中有两个手势识别器，一个添加到背景超级视图中以滑动以更改背景颜色，另一个添加到可拖动的子视图中。

问题是拖动手势受到滑动的干扰。 当我拖动视图时，在某些情况下，拖动操作将被识别为滑动并触发滑动操作。 我不想要这个，我只想在完成这个拖动操作后才能识别滑动。 当我快速拖动子视图时，更常见这种情况。 每次拖动过程中，都会触发滑动操作。

I have a problem about gesture recognizer. I have two gesture recognizers in my view, one added to the background superview to swipe to change background color, the other one is added to a subview which could be dragged around.

The problem is the drag gesture is interfered with the swipe. When I drag the view around, in some case, drag operation will be recognized as a swipe and trigger the swipe operation. I don't want this, I just want swipe could be recognized after finish this drag operation. This situation is more often when I drag the subview around quickly. Every time during the drag, the swipe operation will be triggered.

最满意答案

您需要使用requireGestureRecognizerToFail:设置较小的UIGestureRecognizer requireGestureRecognizerToFail:并传递您想要对其重要的识别器。

UIView *subview = .... [self addSubview:subview]; [self.gestureRecognizer requireGestureRecognizerToFail:subview.gestureRecognizer];

You need to setup your lesser UIGestureRecognizer with requireGestureRecognizerToFail: and pass your recognizer that you want to be important to it.

UIView *subview = .... [self addSubview:subview]; [self.gestureRecognizer requireGestureRecognizerToFail:subview.gestureRecognizer];