如何设置 UIImageView 的大小等于 UIImage 的大小?

How to set size of UIImageView equal to size of UIImage?(如何设置 UIImageView 的大小等于 UIImage 的大小?)

问题描述

我有一个名为 someImageView 的带有 UIImageView 的视图控制器.这个图像视图没有默认的 UIImage.我正在使用以下代码加载 UIImage:

I have an view controller with UIImageView named someImageView. This image view has no default UIImage. I'm loading UIImage with the code below:

UIImage * myImage = [UIImage imageNamed:@"sampleImage.png"];
someImageView.image = myImage;

sampleImage.png 的大小为 320x300.我需要将 someImageView 的大小设置为完全等于 sampleImage.png 的大小.我正在尝试这样做:

The size of sampleImage.png is 320x300. I need to set size of someImageView to size exactly equal to sampleImage.png. I'm trying to do it:

CGRect frame = someImageView.frame;
frame.size = myImage.size;
someImageView.frame = frame;

但它不起作用.

推荐答案

你必须将 imageView 的 contentMode 改为 UIViewContentModeScaleToFill

You have to change contentMode to UIViewContentModeScaleToFill of your imageView

someImageView.image = myImage;
someImageView.contentMode = UIViewContentModeScaleToFill;

CGRect frame = someImageView.frame;
frame.size = myImage.size;
someImageView.frame = frame;

这篇关于如何设置 UIImageView 的大小等于 UIImage 的大小?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！