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copied!<p>[EDIT - this code is a bit moldy being from 2011 and all but I incorporated @ArtOfWarefare's mods]</p> <p>You can't do this w/ UIImageView. I created a simple UIView subclass <code>MyImageView</code> that contains a UIImageView. Code below.</p> <pre><code>// MyImageView.h #import <UIKit/UIKit.h> @interface MyImageView : UIView { UIImageView *_imageView; } @property (nonatomic, assign) UIImage *image; @end </code></pre> <p>and</p> <pre><code>// MyImageView.m #import "MyImageView.h" @implementation MyImageView @dynamic image; - (id)initWithCoder:(NSCoder*)coder { self = [super initWithCoder:coder]; if (self) { self.clipsToBounds = YES; _imageView = [[UIImageView alloc] initWithFrame:self.bounds]; _imageView.contentMode = UIViewContentModeScaleAspectFill; [self addSubview:_imageView]; } return self; } - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { self.clipsToBounds = YES; _imageView = [[UIImageView alloc] initWithFrame:self.bounds]; _imageView.contentMode = UIViewContentModeScaleAspectFill; [self addSubview:_imageView]; } return self; } - (id)initWithImage:(UIImage *)anImage { self = [self initWithFrame:CGRectZero]; if (self) { _imageView.image = anImage; [_imageView sizeToFit]; // initialize frame to be same size as imageView self.frame = _imageView.bounds; } return self; } // Delete this function if you're using ARC - (void)dealloc { [_imageView release]; [super dealloc]; } - (UIImage *)image { return _imageView.image; } - (void)setImage:(UIImage *)anImage { _imageView.image = anImage; [self setNeedsLayout]; } - (void)layoutSubviews { if (!self.image) return; // compute scale factor for imageView CGFloat widthScaleFactor = CGRectGetWidth(self.bounds) / self.image.size.width; CGFloat heightScaleFactor = CGRectGetHeight(self.bounds) / self.image.size.height; CGFloat imageViewXOrigin = 0; CGFloat imageViewYOrigin = 0; CGFloat imageViewWidth; CGFloat imageViewHeight; // if image is narrow and tall, scale to width and align vertically to the top if (widthScaleFactor > heightScaleFactor) { imageViewWidth = self.image.size.width * widthScaleFactor; imageViewHeight = self.image.size.height * widthScaleFactor; } // else if image is wide and short, scale to height and align horizontally centered else { imageViewWidth = self.image.size.width * heightScaleFactor; imageViewHeight = self.image.size.height * heightScaleFactor; imageViewXOrigin = - (imageViewWidth - CGRectGetWidth(self.bounds))/2; } _imageView.frame = CGRectMake(imageViewXOrigin, imageViewYOrigin, imageViewWidth, imageViewHeight); } - (void)setFrame:(CGRect)frame { [super setFrame:frame]; [self setNeedsLayout]; } @end </code></pre>

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