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UIColor+Extensions #ios #swift #UIColor
extension UIColor {
public convenience init?(hex: String) {
let r: CGFloat
let g: CGFloat
let b: CGFloat
let a: CGFloat
let start = hex.index(hex.startIndex, offsetBy: hex.hasPrefix("#") ? 1 : 0)
var hexColor = String(hex[start...])
if hexColor.count == 6 { hexColor += "FF" }
if hexColor.count == 8 {
let scanner = Scanner(string: hexColor)
var hexNumber: UInt64 = 0
if scanner.scanHexInt64(&hexNumber) {
r = CGFloat((hexNumber & 0xff00_0000) >> 24) / 255
g = CGFloat((hexNumber & 0x00ff_0000) >> 16) / 255
b = CGFloat((hexNumber & 0x0000_ff00) >> 8) / 255
a = CGFloat(hexNumber & 0x0000_00ff) / 255
self.init(red: r, green: g, blue: b, alpha: a)
return
}
}
return nil
}
}
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