iphone - 单击手势与双击手势冲突 [英] iphone - single tap gesture conflicts with double one

问题描述

我有一个观点。我希望为它定义各种轻击手势。

I have a view. I wish to define to kinds of tap gestures for it.

因此，如果用户单击视图，视图将执行A;如果用户双击视图，它将执行B而不进行A。

So if a user single tap on the view, view will do A; and if a user double tap on the view, it will do B without doing A.

我在视图中添加了两个UITapGestureRecognizer。单击具有numberOfTapsRequired = 1;并且双击使用numberOfTapsRequired = 2;

I added two UITapGestureRecognizer to the view. the single tap is with numberOfTapsRequired = 1; and the double tap is with numberOfTapsRequired = 2;

此外，我为

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
     return NO;
}

但是，我发现它们相互冲突。我的意思是，即使我双击视图，也会调用A和B.

However, I found that they conflict with each other. I mean, even if I double tap on the view, both A and B will be invoked.

如何解决这个问题？

谢谢

推荐答案

您可以通过添加以下代码行来解决此问题。这将确保单击识别器仅在双击识别器失败时触发：

You can work around this by adding the following line of code. This will make sure that the single tap recognizer only fires when the double tap recognizer failed:

    [singleTapRecognizer requireGestureRecognizerToFail:doubleTapRecognizer];

这篇关于iphone - 单击手势与双击手势冲突的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！