CGPoint location = [touch locationInView:[touch view]]; [英] CGPoint location = [touch locationInView:[touch view]];

问题描述

有人可以解释一下从CGPoint开始的这一行代码的实际情况.这来自-(void)ccTouchesBegan ...

Can someone please explain what's exactly going on with this line of code starting at CGPoint. This comes from the -(void)ccTouchesBegan...

UITouch* touch = [touches anyObject];
CGPoint location = [touch locationInView:[touch view]];

尤其是我不理解[触摸视图]部分.

In particular I'm not understanding the [touch view] part.

谢谢

推荐答案

[UITouch view]文档

该属性的值是最初发生触摸的视图对象.该对象可能不是触摸当前所在的视图.

The value of the property is the view object in which the touch originally occurred. This object might not be the view the touch is currently in.

换句话说，它是触摸位置的最里面的视图.但是，如果您点击并移动手指，即使触摸已经在另一个视图中，view也不会改变.

In other words, it's the innermost view at the touched position. However, if you tap and move the finger, the view doesn't change even if the touch is already in a different view.

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