#pragma mark - 颜色转换 IOS中十六进制的颜色转换为UIColor        + (UIColor *) colorWithHexString: (NSString *)color        {            NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];                        // String should be 6 or 8 characters            if ([cString length] < 6) {                return [UIColor clearColor];            }                        // strip 0X if it appears            if ([cString hasPrefix:@"0X"])                cString = [cString substringFromIndex:2];            if ([cString hasPrefix:@"#"])                cString = [cString substringFromIndex:1];            if ([cString length] != 6)                return [UIColor clearColor];                        // Separate into r, g, b substrings            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];                        // Scan values            unsigned int r, g, b;            [[NSScanner scannerWithString:rString] scanHexInt:&r];            [[NSScanner scannerWithString:gString] scanHexInt:&g];            [[NSScanner scannerWithString:bString] scanHexInt:&b];                        return [UIColor colorWithRed:((float) r / 255.0f) green:((float) g / 255.0f) blue:((float) b / 255.0f) alpha:1.0f];        }