How to get color components of a CGColor correctly

Question

I have a UILabel with black color;

i am writing the following code to get black color\'s components.

UIColor *aColor = [aLabel.textColor retain];
con         


        

Answer 1

extension UIColor {

  func toRGB() -> UIColor? {
    guard let model = cgColor.colorSpace?.model else {
      return nil
    }
    
    let components = cgColor.components

    switch model {
    case .rgb:
      return UIColor(red: components?[0] ?? 0.0, green: components?[1] ?? 0.0, blue: components?[2] ?? 0.0, alpha: components?[3] ?? 0.0)
    case .monochrome:
      return UIColor(red: components?[0] ?? 0.0, green: components?[0] ?? 0.0, blue: components?[0] ?? 0.0, alpha: components?[1] ?? 0.0)
    default:
      return nil
    }
  }
}