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Resizes the UIImage proportionally to its width

I need to resize UIImage

proportionally in width, maybe someone has a working code?

For example:

Entrance: Width: 900 Height: 675. Resize to width: 400 width

Result: Width: 400 Height: 300

Please, help..

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2 answers


Check out this blog post . Specifically, these two files:



Maybe this will work for you:

UIImage *image = [UIImage imageNamed:@"SomeImage-900x675"]; // SomeImage-900x675.png
CGFloat targetWidth = 400.0f;

CGFloat scaleFactor = targetWidth / image.size.width;
CGFloat targetHeight = image.size.height * scaleFactor;
CGSize targetSize = CGSizeMake(targetWidth, targetHeight);

UIImage *scaledImage = [image resizedImage:targetSize interpolationQuality:kCGInterpolationHigh];
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Could you just set the content mode? to .ScaleAspectFill? Then you can set the size of the UIImageView to any arbitrary size and the aspect ratio will be preserved.



https://developer.apple.com/reference/uikit/uiviewcontentmode/1622518-scaleaspectfill

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