具有 UITapGestureRecognizer 的视图内的 UIButton [英] UIButton inside a view that has a UITapGestureRecognizer

问题描述

我有一个UITapGestureRecognizer 的视图.因此，当我点击视图时，该视图上方会出现另一个视图.这个新视图有三个按钮.当我现在按下这些按钮之一时，我没有得到按钮动作，我只得到点击手势动作.所以我不能再使用这些按钮了.我该怎么做才能让事件通过这些按钮?奇怪的是按钮仍然突出显示.

I have view with a UITapGestureRecognizer. So when I tap on the view another view appears above this view. This new view has three buttons. When I now press on one of these buttons I don't get the buttons action, I only get the tap gesture action. So I'm not able to use these buttons anymore. What can I do to get the events through to these buttons? The weird thing is that the buttons still get highlighted.

我不能在收到点击后就删除 UITapGestureRecognizer.因为有了它，新视图也可以被删除.意味着我想要像全屏视频控件一样的行为.

I can't just remove the UITapGestureRecognizer after I received it's tap. Because with it the new view can also be removed. Means I want a behavior like the fullscreen vide controls.

推荐答案

您可以将控制器或视图(以创建手势识别器为准)设置为 UITapGestureRecognizer 的代理.然后在委托中你可以实现 -gestureRecognizer:shouldReceiveTouch:.在您的实现中，您可以测试触摸是否属于您的新子视图，如果是，则指示手势识别器忽略它.类似于以下内容:

You can set your controller or view (whichever creates the gesture recognizer) as the delegate of the UITapGestureRecognizer. Then in the delegate you can implement -gestureRecognizer:shouldReceiveTouch:. In your implementation you can test if the touch belongs to your new subview, and if it does, instruct the gesture recognizer to ignore it. Something like the following:

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
    // test if our control subview is on-screen
    if (self.controlSubview.superview != nil) {
        if ([touch.view isDescendantOfView:self.controlSubview]) {
            // we touched our control surface
            return NO; // ignore the touch
        }
    }
    return YES; // handle the touch
}

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