UIScrollView覆盖我的子视图的平移手势识别器 [英] UIScrollView overrides my subview's pan gesture recognizers

问题描述

如果我有一个带有子视图的scrollView，子视图有一个平移手势识别器，scrollView的平移手势覆盖子视图的平移。我想要的是相反的，我想，所以这是我拖动一个子视图，它将滚动在滚动视图，但如果我触摸另一个区域，滚动视图将平移正常。

If I have a scrollView with a subview and the subview has a pan gesture recognizer, the scrollView's pan gesture override's the subview's pan. What I want is the opposite, I think, so that is I drag a subview it will pan within the scroll view, yet if I touch another area the scroll view will pan as normal. Is there an easy way to set that up?

推荐答案

以下是对我有用的方法：

Here's what works for me:

UIPanGestureRecognizer *subviewPanRecognizer = [[UIPanGestureRecognizer alloc]
    initWithTarget:self action:@selector(panSubview:)];
[subview addGestureRecognizer:subviewPanRecognizer];

// play nice with subview's pan gesture
[scrollView.panGestureRecognizer 
    requireGestureRecognizerToFail:subviewPanRecognizer];

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