16进制颜色(html颜色值)字符串转为UIColor

来源：互联网发布：音频切割合并软件编辑：程序博客网时间：2024/04/29 20:54

//16进制颜色(html颜色值)字符串转为UIColor+(UIColor *) hexStringToColor: (NSString *) stringToConvert{    NSString *cString = [[stringToConvert stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];    // String should be 6 or 8 charactersif ([cString length] < 6) return [UIColor blackColor];    // strip 0X if it appearsif ([cString hasPrefix:@"0X"]) cString = [cString substringFromIndex:2];    if ([cString hasPrefix:@"#"]) cString = [cString substringFromIndex:1];    if ([cString length] != 6) return [UIColor blackColor];        // Separate into r, g, b substrings    NSRange range;    range.location = 0;    range.length = 2;    NSString *rString = [cString substringWithRange:range];    range.location = 2;    NSString *gString = [cString substringWithRange:range];    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];}

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