点击子视图时，UIView上的UITapGestureRecognizer及其子视图一起响应 [英] UITapGestureRecognizer on UIView and Its Subview Respond Together When Subview Is Tapped

问题描述

UITapGestureRecognizer同时应用于UIImageView及其子视图(UITextView).但是，当我点击子视图时，接收器变为子视图及其父视图(即UIImageView + UITextView).但是，它应该只是 subview ，因为那是我点击的那个.我以为嵌套手势会首先做出反应，但显然父母会先握住拳头，然后再交给孩子.

UITapGestureRecognizer is applied to both UIImageView and its subview (UITextView). However, when I tap on subview, the receiver becomes subview and its parent view (i.e. UIImageView + UITextView). It should however be only subview because that was the one I tapped. I was assuming nested gestures would react first but apparently parent receives the fist tap and then it goes to child.

因此，针对各种情况存在不同的解决方案(与我的不相似，但滚动视图内的按钮冲突).如何轻松地解决我的问题而无需可能的子类化以及对iOS 6+的支持?我尝试延迟UIImageView上UIGestureRecognizer的启动时触摸，并且尝试将cancelsTouchesInView设置为NO-都没有运气.

So, there are different solutions out there for various scenarios (not similar to mine but rather buttons inside scroll view conflict). How can I easily fix my issue without possible subclassing and for iOS 6+ support? I tried delaying touch on start for UIGestureRecognizer on UIImageView and I tried setting cancelsTouchesInView to NO - all with no luck.

推荐答案

尝试以下代码:

使< >符合您的班级.

conform the <UIGestureRecognizerDelegate> to your class.

设置yourGesture.delegate = self;

然后添加此委托方法:

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
    // return YES (the default) to allow the gesture recognizer to examine the touch object, NO to prevent the gesture recognizer from seeing this touch object.
    if([touch.view isKindOfClass: [UITextView class]] == YES)] {
        return YES;
    }
    else {
        return NO;
    }
}

希望它能解决您的问题.享受编码.. !!!!

Hope it will solve your issue. Enjoy Coding..!!!!

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