颜色(color)转换为三色值(r/g/b)（干货分享）

// 颜色转换  ##665522 — 三色值
+ ( UIColor   *)setFontColorWithString:( NSString   *)color
{
      NSString   *cString = [[color   stringByTrimmingCharactersInSet :[ NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
   
    // 字符串个数必须大于等于6
    if ([cString length] < 6) {
        return [UIColorclearColor];
    }
   
    // 根据16进制来区分
    if ([cString hasPrefix:@"0X"])
        cString = [cString substringFromIndex:2];
    if ([cString hasPrefix:@"#"])
        cString = [cString substringFromIndex:1];
    if ([cString length] != 6)
        return [UIColorclearColor];
   
    // 分为r,g,b 子字符串
    NSRange range;
    range.location = 0;
    range.length = 2;
   
    //r
    NSString *rString = [cString substringWithRange:range];
   
    //g
    range.location = 2;
    NSString *gString = [cString substringWithRange:range];
   
    //b
    range.location = 4;
    NSString *bString = [cString substringWithRange:range];
   
    // 扫描r,g,b值
    unsignedint r, g, b;
    [[NSScannerscannerWithString:rString] scanHexInt:&r];
    [[NSScannerscannerWithString:gString] scanHexInt:&g];
    [[NSScannerscannerWithString:bString] scanHexInt:&b];
   
    return RgbHex2UIColor(r, g, b);

}