传入16进制颜色获得色值(UIColor)

传入字符串获取色值

如：@"0xbe7afe" @“#CC00FF” 这样的字符串

#pragma mark 获取颜色值

- (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];

}

复制粘贴直接使用，调用方法传入十六进制色值字符串。

感谢拥有，学以致用更感谢~