In the interface builder we can pin height, pin width, make two views width equally, but how do I set the constraints so that when a view is being resized, it maintains its width/height ratio?
In my particular case, I have an UIImageView in my view controller. When the view resizes, I'd like my image view to resize, but maintain a 3:2 width:height ratio. Is it possible to do it in IB? Is it possible to do it with code?
谢谢！
推荐答案
您可以在 IB 中通过控件从视图拖动到自身并选择纵横比来添加纵横比约束.
You can add an aspect ratio constraint in IB by control dragging from the view to itself and choosing aspect ratio.
What is NSLayoutConstraint quot;UIView-Encapsulated-Layout-Heightquot; and how should I go about forcing it to recalculate cleanly?(什么是 NSLayoutConstraint“UIView-Encapsulated-Layout-Height?我应该如何强制它干净地重新计算?) - IT屋-程序员
