更改UIView中的坐标原点 [英] Change coordinate origin in UIView

问题描述

是否可以更改UIView中的坐标系，以便（0,0）将位于右上角？

Is it possible to change the coordinate system in a UIView so that (0,0) will be the top right hand corner?

推荐答案

在启动UIView之后，执行CGAffineTransform，如下所示：

After initiating the UIView, perform a CGAffineTransform as such:

self.view.transform = CGAffineTransformMakeScale(-1, 1);

检查CGAffineTransform的文档。你可能还需要翻译视图一点，虽然我相信它应该是好的。

Check the documentation for CGAffineTransform. You might also have to translate the view a bit, although I believe it should be good.

上面的-1翻转x坐标系。每当您以编程方式提交新视图时，都会按照您的希望工作。

The "-1" up there inverts the x coordinate system. Whenever you present a new view programmatically, it will work as you hope.

干杯！

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