问题
I am trying to find a way to get a particular UIView given a CGPoint. Briefly, I want to do a hit test.
For example, I have a UIView which has many subviews whose sizes are smaller than the parent UIView. What I want to do is, when a touchMoved event happens, to check the other subviews around the touched subview.
For that purpose, it would be nice to be able to convert a CGPoint to a subview UIView.
I'm new to Objective-C. Is there good way to do it? Any suggestion would be really helpful. :)
回答1:
There is a hitTest:withEvent: selector on UIView. This returns the deepest subview in the view hierarchy that contains that point. Try calling this on your topmost view.
来源：https://stackoverflow.com/questions/6033220/how-to-get-uiview-given-a-cgpoint