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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) | |
} } | |
// usage | |
let color = UIColor(hex: 0xff00cc, alpha: 1.0) | |
let color2 = UIColor(hex: 0xff00cc) // alpha of 1 is the default | |
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: UInt32 | |
switch 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) | |
} } | |
let color = UIColor("#80FFFFFF") | |
let color = UIColor("#FFFFFF") | |
let color = UIColor("#FFF") |
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