如何更改Swift中的文本顏色？

我在Stackoverflow上找到了指示器函數。我也喜歡它，但我無法更改文本顏色，實際上，我更改了blackColor（）的代碼，但它不起作用。我如何解決它？我想看到文字和指示符都是黑色的。如何更改Swift中的文本顏色？

class ProgressHUD: UIVisualEffectView { 

    var text: String? { 
     didSet { 
      label.text = text 
     } 
    } 
    let activityIndictor: UIActivityIndicatorView = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.White) 
    let label: UILabel = UILabel() 
    let blurEffect = UIBlurEffect(style: .Light) 
    let vibrancyView: UIVisualEffectView 

    init(text: String) { 
     self.text = text 
     self.vibrancyView = UIVisualEffectView(effect: UIVibrancyEffect(forBlurEffect: blurEffect)) 
     super.init(effect: blurEffect) 
     self.setup() 
    } 

    required init(coder aDecoder: NSCoder) { 
     self.text = "" 
     self.vibrancyView = UIVisualEffectView(effect: UIVibrancyEffect(forBlurEffect: blurEffect)) 
     super.init(coder: aDecoder)! 
     self.setup() 

    } 

    func setup() { 
     contentView.addSubview(vibrancyView) 
     vibrancyView.contentView.addSubview(activityIndictor) 
     vibrancyView.contentView.addSubview(label) 
     activityIndictor.startAnimating() 
    } 

    override func didMoveToSuperview() { 
     super.didMoveToSuperview() 

     if let superview = self.superview { 

      let width = superview.frame.size.width 
      let height = superview.frame.size.height 
      self.frame = CGRectMake(superview.frame.size.width/2 - width/2, 
       superview.frame.height/2 - height/2, 
       width, 
       height) 
      vibrancyView.frame = self.bounds 

      let activityIndicatorSize: CGFloat = 50 
      activityIndictor.frame = CGRectMake(5, height/2 - activityIndicatorSize/2, 
       activityIndicatorSize, 
       activityIndicatorSize) 

      layer.cornerRadius = 8.0 
      layer.masksToBounds = true 
      label.text = text 
      label.textAlignment = NSTextAlignment.Center 
      label.frame = CGRectMake(activityIndicatorSize + 5, 0, width - activityIndicatorSize - 15, height) 
      label.textColor = UIColor.blackColor() //I changed here grayColor() to blackColor but it doesn't work! 
      label.font = UIFont.boldSystemFontOfSize(16) 
     } 
    } 

    func show() { 
     self.hidden = false 
    } 

    func hide() { 
     self.hidden = true 
    } 
}

來源

2015-10-03 Yigit Kayalar

什麼樣的文本只想？？ –

This one：label.text = text –

好吧，我添加了一個答案 –