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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!
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If you select Aspect Ratio for multiple items, Auto Layout chooses the width of one of the items for the numerator and the height of another item for the denominator. To change the initial aspect ratio, edit the Multiplier field of the Attributes inspector for the constraint.
Constraints allow you to control how objects respond to changing frames, while auto layout allows you to control how frames respond to changing objects. In this article, I'll explain how they work and when to use each.
Trait Variation is a change to the presentation of your user interface that is based on a device configuration. Trait Variations of the user interface is not just limited to constraints but can be applied to much more.
You can add an aspect ratio constraint in IB by control dragging from the view to itself and choosing aspect ratio.
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