iOS 通过HEX(十六进制)得到一个UIColor的对象

inline static UIColor* getColorFromHex(NSString *hexColor)
{

    if (hexColor == nil) {
        return nil;
    }

    unsigned int red, green, blue;
    NSRange range;
    range.length = 2;

    range.location = 1;
    [[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&red];
    range.location = 3;
    [[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&green];
    range.location = 5;
    [[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&blue];	

    return [UIColor colorWithRed:(float)(red/255.0f) green:(float)(green/255.0f) blue:(float)(blue/255.0f) alpha:1.0f];
}