How can I get a hex string from UIColor or from rgb

Question

Now I can convert a hex string to rgb color like this:

// Input is without the # ie : white = FFFFFF + (UIColor *)colorWithHexString:(NSString *)hexString {     unsigned int hex;     [[NSScanner scannerWithString:hexString] scanHexInt:&hex];     int r = (hex >> 16) & 0xFF;     int g = (hex >> 8) & 0xFF;     int b = (hex) & 0xFF;      return [UIColor colorWithRed:r / 255.0f                         green:g / 255.0f                         blue:b / 255.0f                         alpha:1.0f]; } 

bu how can I convert rgb to hex string?

Answer 1

Use this method :

- (NSString *)hexStringForColor:(UIColor *)color {       const CGFloat *components = CGColorGetComponents(color.CGColor);       CGFloat r = components[0];       CGFloat g = components[1];       CGFloat b = components[2];       NSString *hexString=[NSString stringWithFormat:@"%02X%02X%02X", (int)(r * 255), (int)(g * 255), (int)(b * 255)];       return hexString; }