// MARK:- 把f5f5f5颜色转为UIColor
extension UIColor {
class func colorWithHexString(hex:String) ->UIColor {
var cString = hex.trimmingCharacters(in:CharacterSet.whitespacesAndNewlines).uppercased()
if (cString.hasPrefix("#")) {
let index = cString.index(cString.startIndex, offsetBy:1)
cString = cString.substring(from: index)
}
if (cString.characters.count != 6) {
return UIColor.red
}
let rIndex = cString.index(cString.startIndex, offsetBy: 2)
let rString = cString.substring(to: rIndex)
let otherString = cString.substring(from: rIndex)
let gIndex = otherString.index(otherString.startIndex, offsetBy: 2)
let gString = otherString.substring(to: gIndex)
let bIndex = cString.index(cString.endIndex, offsetBy: -2)
let bString = cString.substring(from: bIndex)
var r:CUnsignedInt = 0, g:CUnsignedInt = 0, b:CUnsignedInt = 0;
Scanner(string: rString).scanHexInt32(&r)
Scanner(string: gString).scanHexInt32(&g)
Scanner(string: bString).scanHexInt32(&b)
return UIColor(red: CGFloat(r) / 255.0, green: CGFloat(g) / 255.0, blue: CGFloat(b) / 255.0, alpha: CGFloat(1))
}
}
将以上方法直接复制粘贴至任意类中即可，调用方法如下：
let BackGroundolor = UIColor.colorWithHexString(hex: "#f5f5f5")
