自动布局约束：如何使调整大小时视图保持其宽/高比？ [英] Auto-Layout Constraint: How to make a view maintains its width/height ratio when resized?

问题描述

在界面生成器，我们可以销高度，宽度脚，使两种观点同样宽度，但我怎么设置，这样，当一个视图调整大小的限制，保持其宽/高比？

In the interface builder we can pin height, pin width, make two views width equally, but how do I set the constraints so that when a view is being resized, it maintains its width/height ratio?

在我的具体情况，我有一个的UIImageView在我的视图控制器。当视图调整大小，我想我的图像视图来调整，但保持3：2宽：高比例。是否有可能做这件事IB？是否有可能与code呢？

In my particular case, I have an UIImageView in my view controller. When the view resizes, I'd like my image view to resize, but maintain a 3:2 width:height ratio. Is it possible to do it in IB? Is it possible to do it with code?

谢谢！

推荐答案

您可以通过IB控制从视图拖到本身并选择宽高比增加的纵横比限制。

You can add an aspect ratio constraint in IB by control dragging from the view to itself and choosing aspect ratio.

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