颜色(color)转换为三刺激值(r/g/b)（干股）

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// 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]; } // 依据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);

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