ios - Auto-Layout Constraint: How to make a view maintains its width/height ratio when resized?

Question

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?

Thanks!

Answer 1

You can add an aspect ratio constraint in IB by control dragging from the view to itself and choosing aspect ratio.