ios - UIView's border color in Interface builder doesn't work?

Question

I am trying to set up a view's layer properties via IB. Everything works except for color of the border (property layer.borderColor):

I remember running into this problem a year ago and I ended up doing it programatically. And still, I can do this programmatically, but I am curious why the layer.borderColorproperty never works via interface builder. I don't want to import QuartzCore, and then write extra line of code just because of this, seems like an overkill.

Answer 1

It's possible to do this, but it's not a built-in feature. This is because the Color type in the User Defined Runtime Attributes panel creates a UIColor, but layer.borderColor holds a CGColorRef type. Unfortunately, there's no way to assign a CGColorRef type in Interface Builder.

However, this is possible through a proxy property. See Peter DeWeese's answer to a different question for a possible solution to this problem. His answer defines a category that allows a proxy color to be set through Interface Builder.