当父视图在iOS中将userInteractionEnabled设置为NO时，如何进行触摸

问题描述

当父视图具有userInteractionEnabled = NO时，即使其userInteractionEnabled属性设置为YES，其子视图也不会接受触摸事件。

When the parent view has userInteractionEnabled=NO, its subviews will not accept touch events even if their userInteractionEnabled property is set to YES.

还有什么方法可以使用在子视图中获取触摸事件？

Is there any way to still get touch events in subviews?

推荐答案

要获得一个视图让触摸传递但是给它的子视图处理触摸，让userInteractionEnabled在该视图为YES，而是使用此代码段：

To get a view to let touches pass-through but give its subviews handle touches, let userInteractionEnabled on that view to YES and, instead, use this snippet:

-(id)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
    id hitView = [super hitTest:point withEvent:event];
    if (hitView == self) return nil;
    else return hitView;
}

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