Xcode 9 borderColor doesn't work in User Defined Runtime Attributes

calayer, ios, ios11, xcode9, xcode9-beta

Solution

try decorating your var declaration with `@objc` like so:

@objc var borderUIColor: UIColor {
...
}

that should fix your problem

Problem

I'm using this `CALayer` extension: ``` var borderUIColor: UIColor { set { self.borderColor = newValue.cgColor } get { return UIColor(cgColor: self.borderColor!) } } ``` I thought that maybe because of this extension my `borderColor` of the Submit button from the bottom of the page doesn't change to white (as I want it to be): But no, I hooked up an `IBOutlet` and tried to set directly the color like this: ``` submitButton.layer.borderColor = UIColor.white.cgColor ``` Did it in `viewDidLoad`, `viewWillAppear` and `viewDidAppear` because I know that in the last big update (iOS 10) the frame rendering was changed fundamentally (the 1000x1000 frame thing) and maybe there were some similar alterations now. No luck, though. I tested in iOS 9, 10 and 11. It's not about the OS, rather about the environment. I'm using Xcode 9 Beta 5. Any ideas how to solve it?

Original source