将UITapGesture添加到UIScrollView-Java 学习之路

我有一个 UIScrollView . 我给它做了一个轻击手势：

self.tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.tapped(_:)))
self.tapGesture.delegate = self
self.tapGesture.numberOfTapsRequired = 1
self.tapGesture.numberOfTouchesRequired = 1
self.tapGesture.cancelsTouchesInView = false
self.tapGesture.delaysTouchesBegan = false
self.tapGesture.delaysTouchesEnded = false
self.scrollView.addGestureRecognizer(self.tapGesture)

这工作正常，除非滚动视图滚动（滚动动画正在发生，而不是用户拖动），轻击手势将被忽略 .

我如何设置滚动视图的动画：

UIView.animate(withDuration: 0.3, delay: 0.0,
                           options:[.beginFromCurrentState, .curveEaseInOut], animations:
    {
        self.scrollView.contentOffset = CGPoint(x:self.scrollView.contentOffset.x, y:yOffset)
    },  completion: nil)

这个滚动视图大部分时间滚动，我试图将它转到 recognize the tap gesture while scroll view is animating scrolling ....

1 回答

2
看一下UIGestureRecogniserDelegate函数 .

您应该能够使用以下功能指定可以同时识别平移和轻击手势：
```
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, 
shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
    return (gestureRecogniser is UIPanGestureRecogniser || gestureRecogniser is UITapGestureRecogniser) && (otherGestureRecognizer is UIPanGestureRecogniser || otherGestureRecognizer is UITapGestureRecogniser) 
}
```
注意：确保您的类符合UIGestureRecogniserDelegate协议，并将脚本设置为自我委托 .

这应该有效，但我现在无法完全测试它 .

UPDATE:

如果您在动画期间尝试识别水龙头，则可能需要在UIView.animateWithDuration的选项中使用 UIViewAnimationOptions.AllowUserInteraction 选项 . 使用其他answer作为来源
回复于 2024-04-28T04:11:35+08:00

将UITapGesture添加到UIScrollView

1 回答

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