UIImageView resizing to eliminate blank space IOS

user_6576984 0
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My UIImageView is in aspect fit mode which leaves blank space beneath the actual image.

UIImageView displayment

The blue space is what I want to eliminate so the imageView wraps the image (if only I had wrap content). Seemed like an easy task but I soon realized that the image is in aspect fit so the image view changes the width and height of the image but then I would have to make a calculation on the image view based on that altered image which would make a never ending loop of shrinking the image.

UIImageView in the app

I just want to remove the blank space to make it look more concise. Full project at GitHub: https://github.com/sak6lab/Closet-Space

swift uiimageview ios
2 Answers

So based on Fogmeister answer,instead of width, change it to height and then height to width for the view

let newsize = self.feedImage.contentClippingRect

self.feedImage.heightAnchor.constraint(equalTo: self.feedImage.widthAnchor, multiplier:newsize.width / newsize.height).isActive = true

where newsize is the CGRect after we scale with .scaleaspectfit Note the below extension from https://www.hackingwithswift.com/example-code/uikit/how-to-find-an-aspect-fit-images-size-inside-an-image-view

extension UIImageView {
    var contentClippingRect: CGRect {
    guard let image = image else { return bounds }
    guard contentMode == .scaleAspectFit else { return bounds }
    guard image.size.width > 0 && image.size.height > 0 else { return bounds }

    let scale: CGFloat
    if image.size.width > image.size.height {
        scale = bounds.width / image.size.width
    } else {
        scale = bounds.height / image.size.height
    }

    let size = CGSize(width: image.size.width * scale, height: image.size.height * scale)
    let x = (bounds.width - size.width) / 2.0
    let y = (bounds.height - size.height) / 2.0
    //print ("image resizing[width=\(size.width), height=\(size.height)")
    return CGRect(x: x, y: y, width: size.width, height: size.height)
    }
}
user_26031020
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