hex color from uicolor

Question

i have a problem in converting uicolor to hex color, here what i found

CGColorRef colorref = [[Colorview_ backgroundColor] CGColor];

int numComponents = CG         


        

Answer 1

I tried that yesterday because I had to get a hex color from a uicolor and made it work in javascript too, but this doesn't work when a component is 0, because it gets a 0 instead of a 00. So a pure cyan would be RGB 0 255 255, and this code would return #0ffff instead of #00ffff.

I made this code from yours, and it's working on my app:

-(NSString*)colorToHex:(UIColor*)color{

    CGColorRef colorref = [color CGColor];

    const CGFloat *components = CGColorGetComponents(colorref);

    NSString *hexString = @"#";
    int hexValue = 0;

    for (int i=0; i<3; i++) {
        if (components[i] == 0) {
            hexString = [NSString stringWithFormat:@"%@00", hexString];
        }else{
            hexValue = 0xFF*components[i];
            hexString = [NSString stringWithFormat:@"%@%x", hexString, hexValue];
        }
    }

    return hexString;
}