iOS rainbow colors array

Question

I am setting up an array that has a transition throughout he colors of the rainbow. Right now I\'ve just manually entered the colors in the array but there are too many to m

Answer 1

Far simpler, use -[UIColor colorWithHue:saturation:brightness:alpha:], like so:

NSMutableArray *colors = [NSMutableArray array];

float INCREMENT = 0.05;
for (float hue = 0.0; hue < 1.0; hue += INCREMENT) {
    UIColor *color = [UIColor colorWithHue:hue
                                saturation:1.0
                                brightness:1.0
                                     alpha:1.0];
    [colors addObject:color];
}

This allows you to vary the hue (or color) without changing how bright the color is on the screen, which you're very likely not preserving right now. It's also far simpler to write, and far clearer to a later reader.