Swift 4 Label attributes

Question

I\'m moving from swift 3 to swift 4. I have UILabels that I am giving very specific text properties to the label. I\'m getting an \'unexpectedly found nil while unwrapping

Answer 1

NSAttributedStringKey.strokeColor.rawValue is of type String

NSAttributedStringKey.strokeColor is of type NSAttributedStringKey

So its unable to convert String to NSAttributedStringKey . You have to use like below:

let strokeTextAttributes: [NSAttributedStringKey : Any] = [
    NSAttributedStringKey.strokeColor : UIColor.black,
    NSAttributedStringKey.foregroundColor : UIColor.white,
    NSAttributedStringKey.strokeWidth : -2.0,
    NSAttributedStringKey.font : UIFont.boldSystemFont(ofSize: 18)
]