iPhone - 单击手势与双击手势冲突
我有一个看法。我希望为其定义各种点击手势。
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，而不执行 A。
我向视图添加了两个 UITapGestureRecognizer。单击时 numberOfTapsRequired = 1；双击时 numberOfTapsRequired = 2；
我还设置了 return NO
- (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，A 和 B 都会被调用。
我该如何解决这个问题？
谢谢
I have a view. I wish to define to kinds of tap gestures for it.
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.
I added two UITapGestureRecognizer to the view. the single tap is with numberOfTapsRequired = 1; and the double tap is with numberOfTapsRequired = 2;
Also I set return NO for
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
return NO;
}
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.
How can I solve this problem?
Thanks
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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: