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iOS 7自动版式无法正常工作

[英]iOS 7 Autolayout doesn't work

原文 2013-11-24 14:22:40 1 1 ios/ autolayout

I've been working today on this problem for a while now and i couldn't solve it. 我今天已经在这个问题上工作了一段时间，但无法解决。 I downloaded Apple's Autolayout Guide and couldn't find an answer/solution. 我下载了Apple的《自动排版指南》，但找不到答案/解决方案。 The problem is that I'm adding a UIImageView to my View Controller and when I change the window s form factor from 3.5 to 4 and vise versa, the image view is stretched. 问题是我将UIImageView添加到我的View Controller中，并且当我将window的尺寸系数从3.5更改为4时，反之亦然， image view被拉伸了。

To solve this, I tried many ways such as clicking on reset to suggested constraints, clear all constraints, and build my own constraints by pinning and aligning. 为了解决这个问题，我尝试了许多方法，例如，单击重置为建议的约束，清除所有约束以及通过固定和对齐来建立自己的约束。

By aligning and pinning I set the height and width to the size as in the Interface Builder and the horizontal and vertical positions as well. 通过对齐和固定，可以像在“界面生成器”中一样将height和width设置为大小，并在horizontal和vertical位置上进行设置。 Unfortunately, the image still stretches upon changing the form factor in Interface Builder. 不幸的是，在Interface Builder中更改形状因子后，图像仍会拉伸。 I tried to only pin the height of the UIImageView but it doesn't work. 我试图只固定UIImageView的height ，但是不起作用。

How can i work this out? 我该如何解决？

1 个解决方案

Autolayout only deals with the frame/bounds of the UIImageView . 自动布局仅处理UIImageView的框架/边界。 The actual way the image is rendered is controlled via it's contentMode property. 渲染图像的实际方式是通过它的contentMode属性控制的。 You need to set it to either UIViewContentModeScaleAspectFit or UIViewContentModeScaleAspectFill to avoid stretching. 您需要将其设置为UIViewContentModeScaleAspectFit或UIViewContentModeScaleAspectFill以避免拉伸。