/** *  设置16进制颜色: *  可识别类型 *  1:有# *  2:没有# *  3:含有0X */extension UIColor{    class func hexadecimalColor(hexadecimal:String)->UIColor{        var cstr = hexadecimal.trimmingCharacters(in:  CharacterSet.whitespacesAndNewlines).uppercased() as NSString;        if(cstr.length < 6){            return UIColor.clear;        }        if(cstr.hasPrefix("0X")){            cstr = cstr.substring(from: 2) as NSString        }        if(cstr.hasPrefix("#")){            cstr = cstr.substring(from: 1) as NSString        }        if(cstr.length != 6){            return UIColor.clear;        }        var range = NSRange.init()        range.location = 0        range.length = 2        //r        let rStr = cstr.substring(with: range);        //g        range.location = 2;        let gStr = cstr.substring(with: range)        //b        range.location = 4;        let bStr = cstr.substring(with: range)        var r :UInt32 = 0x0;        var g :UInt32 = 0x0;        var b :UInt32 = 0x0;        Scanner.init(string: rStr).scanHexInt32(&r);        Scanner.init(string: gStr).scanHexInt32(&g);        Scanner.init(string: bStr).scanHexInt32(&b);        return UIColor.init(red: CGFloat(r)/255.0, green: CGFloat(g)/255.0, blue: CGFloat(b)/255.0, alpha: 1);    }}