如何获得底部y坐标 [英] How get bottom y coordinate

问题描述

如何获得obj-c和Swift中视图的左下角坐标，即最大y坐标？

How can I get the bottom left coordinate, i.e. the maximum y coordinate, of a view in obj-c and Swift?

推荐答案

假设您正在谈论 UIView ，您可能需要查看 CGGeometry 参考。

Supposing that you're talking about UIView, you may want to look at the CGGeometry reference.

谈论'左'和y坐标没有多大意义，但是例如

Talking about 'left' and y coordinate doesn't make much sense, but for instance

CGRectGetMaxY(view.frame) // will return the bottommost y coordinate of the view
CGRectGetMinX(view.frame) // will return the leftmost x coordinate of the view

依此类推。你明白了。

在Swift中，这更方便，你可以做到这一点

In Swift, this is even more convenient, as you can do

view.frame.maxY
view.frame.minY

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