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How can I set the aspect ratio constraint to a 1:1 ratio of width:height on a UIButton programmatically in swift? This image shows in Interface Builder what I want to achieve through code.

My requirements in Interface Builder

maxwell
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j.krissa
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1 Answers1

8

Try this 

myButton.addConstraint(NSLayoutConstraint(item: myButton, attribute: .height, relatedBy: .equal, toItem: myButton, attribute: .width, multiplier: 1, constant: 0))
maxwell
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