Change UIButton BorderColor in Storyboard

Question

I Set CornerRadius and BorderWidth for UIbutton in User Defined Runtime Attributes. Without adding layer.borderColor it works Well and Display border in bla

Answer 1

The explanation, perhaps being lost in some of the other answers here:

The reason that this property is not being set is that layer.borderColor needs a value with type CGColor.

But only UIColor types can be set via Interface Builder's User Defined Runtime Attributes!

So, you must set a UIColor to a proxy property via Interface Builder, then intercept that call to set the equivalent CGColor to the layer.borderColor property.

This can be accomplished by creating a Category on CALayer, setting the Key Path to a unique new "property" (borderColorFromUIColor), and in the category overriding the corresponding setter (setBorderColorFromUIColor:).