如何按比例缩放UIImageView? [英] How to scale a UIImageView proportionally?
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问题描述
我有一个UIImageView,目的是通过给它一个高度或宽度按比例缩放。
I have a UIImageView and the objective is to scale it down proportionally by giving it either a height or width.
UIImage *image = [[UIImage alloc] initWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://farm4.static.flickr.com/3092/2915896504_a88b69c9de.jpg"]]];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
//Add image view
[self.view addSubview:imageView];
//set contentMode to scale aspect to fit
imageView.contentMode = UIViewContentModeScaleAspectFit;
//change width of frame
CGRect frame = imageView.frame;
frame.size.width = 100;
imageView.frame = frame;
图片已调整大小,但位置不在左上角。
The image did get resized but the position is not at the top left. What is the best approach to scaling image/imageView and how do I correct the position?
推荐答案
修复很容易,一旦我找到了文档!
Fixed easily, once I found the documentation!
imageView.contentMode = UIViewContentModeScaleAspectFit;
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