outline text uilabel

uilabeloutline.swift

if let font =  UIFont(name: "DamascusSemiBold", size: 24) {
    
    let textFontAttributes = [
        NSFontAttributeName : font,
        // Note: SKColor.whiteColor().CGColor breaks this
        NSForegroundColorAttributeName: UIColor.whiteColor(),
        NSStrokeColorAttributeName: UIColor.blackColor(),
        // Note: Use negative value here if you want foreground color to show
        NSStrokeWidthAttributeName: -3
    ]
    
    myMutableString = NSMutableAttributedString(string: "hello world", attributes: textFontAttributes)
            
    let label = UILabel(frame: CGRect(origin: CGPoint(x:500, y:500), size: CGSize(width: 200, height: 100)))
    label.attributedText = myMutableString
    self.view?.addSubview(label)
}