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June 14, 2022 09:01
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Save megimix/d0bbea45bd3e1e4d615fbd5c30b54da7 to your computer and use it in GitHub Desktop.
UIImageView with Aspect Fit and Alignment To Top. thanks to (http://stackoverflow.com/a/27569222/1267174)
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| extension UIImageView { | |
| func topAlignmentAndAspectFit(to view: UIView) { | |
| self.contentMode = .scaleAspectFill | |
| self.translatesAutoresizingMaskIntoConstraints = false | |
| view.addSubview(self) | |
| self.addConstraints( | |
| [NSLayoutConstraint(item: self, | |
| attribute: .height, | |
| relatedBy: .equal, | |
| toItem: self, | |
| attribute: .width, | |
| multiplier: self.frame.size.height / self.frame.size.width, | |
| constant: 0.0)]) | |
| view.addConstraints( | |
| [NSLayoutConstraint(item: self, | |
| attribute: .centerX, | |
| relatedBy: .equal, | |
| toItem: view, | |
| attribute: .centerX, | |
| multiplier: 1.0, | |
| constant: 0.0)]) | |
| view.addConstraints( | |
| [NSLayoutConstraint(item: self, | |
| attribute: .width, | |
| relatedBy: .equal, | |
| toItem: view, | |
| attribute: .width, | |
| multiplier: 1.0, | |
| constant: 0.0)]) | |
| view.addConstraints( | |
| NSLayoutConstraint.constraints(withVisualFormat: "V:|[imageView]", | |
| options: .alignAllTop, | |
| metrics: nil, | |
| views: ["imageView": self])) | |
| } | |
| } |
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how to align left in case?