Creating a UIColor from hexadecimal number or string (Hex to UIColor) iOS

You can create a UIColor from a hexadecimal number or string, e.g. 0xff00cc, “#FFFFFF”

Swift

Int Value

extension UIColor {
    convenience init(hex: Int, alpha: CGFloat = 1.0) {let r = CGFloat((hex >> 16) & 0xff) / 255
        let g = CGFloat((hex >> 08) & 0xff) / 255
        let b = CGFloat((hex >> 00) & 0xff) / 255
        self.init(red: r, green: g, blue: b, alpha: alpha)

Example:

let color = UIColor(hex: 0xff00cc, alpha: 1.0)

Note that for alpha the default value of 1.0 is provided, so it can be used as follows:

let color = UIColor(hex: 0xff00cc)

String Value

extension UIColor {
    convenience init(hexCode: String) {let hex =
hexCode.stringByTrimmingCharactersInSet(NSCharacterSet.alphanumericCharacterSet().invertedSet)var int = UInt32()
        NSScanner(string: hex).scanHexInt(&int)
        let a, r, g, b: UInt32switch hex.characters.count {
        case 3:(a, r, g, b) = (255, (int >> 8) * 17, (int >> 4 & 0xF) * 17, (int & 0xF) * 17)
        case 6:(a, r, g, b) = (255, int >> 16, int >> 8 & 0xFF, int & 0xFF)
        case 8:(a, r, g, b) = (int >> 24, int >> 16 & 0xFF, int >> 8 & 0xFF, int & 0xFF)
        default:(a, r, g, b) = (1, 1, 1, 0)
        }self.init(red: CGFloat(r) / 255, green: CGFloat(g) / 255, blue: CGFloat(b) / 255, alpha:
CGFloat(a) / 255)   } 
}