UIImageView框架长宽比错误？
[英]UIImageView frame aspect ratio fault?
问题描述
I have a UIImageView that I want to automatically adjust its size varying on the device its being ran on, my application is universal meaning 4s-ipad Air. 
我有一个UIImageView，我想根据正在运行的设备自动调整其大小，我的应用程序具有通用性，即4s-ipad Air。 It seems every combination of Auto Layout constrain I attempt, there's a conflict. 似乎我尝试的“自动版式”约束的每种组合都存在冲突。 What combination of constrains should I use to center this ImageView in the container as well as make it adjust its size? 我应该使用哪种约束条件来组合此ImageView在容器中居中并调整其大小？
update 更新
So Everything looks perfect in the preview below: 因此，在下面的预览中，一切看起来都很完美：
but when i run it on iphone 4S, its not there, and when I change the orientation on any other screen it disappears, what would be a solution? 但是当我在iphone 4S上运行它时，它不在那儿，而当我在其他任何屏幕上更改方向时，它消失了，那将是一个解决方案？
1 个解决方案
解决方案1
0 已采纳 2015-08-23 07:34:55
I would recommend using relative constraints to solve this problem: 我建议使用相对约束来解决此问题：
It will allow you to specify all the sizes not explicitly but using multipliers, as a percentage of the sizes of superview. 它将允许您不显式地指定所有大小，而是使用乘数（作为Superview大小的百分比）。
Leading constraint: 前导约束：
Width constraint: 宽度限制：
Top constraint: 最高约束：
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