swift - UIScrollView 在子视图中破坏手势识别器

Question

允许滚动视图将手势传递给子视图的正确方法是什么？

Answer 1

您应该像这样向 ScrollView 添加手势识别器：

        let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: "handleTap:")
        scrollView.addGestureRecognizer(tapGestureRecognizer)

然后像这样处理水龙头：

func handleTap(tap: UITapGestureRecognizer)  {

        let location = tap.locationInView(tap.view)

        for i in 0..<scrollView.subviews.count{
            let subViewTapped = scrollView.subviews[i]
            if CGRectContainsPoint(subViewTapped.frame, location) {

        print("tapped subview at index\(i)")
                // do your stuff here

            }
        }

    }