Question

I’m using the the new UIAppearance API and have successfully set the tint color for all UINavigationBar and UIToolbar instances via my AppDelegate like so…

- (void)customizeAppearance
{
    UIColor *tint = [UIColor colorWithRed:212 green:63 blue:69 alpha:1.0];

    [[UINavigationBar appearance] setTintColor:tint];
    [[UIToolbar appearance] setTintColor:tint];
}

However, if I change the RGB value and re-build/run, the toolbars and nab bars all turn white, no matter what color I set it to!

It’s as though the proxy is caching somewhere. When I delete the app, and then reinstall, the RGB values appear as they should, until I change them and rebuild again.

Has anyone else experienced this? Is there something I’m doing wrong?

UPDATE 1:

Now, I’ve noticed, it will arbitrarily switch to a white background between compile times without even changing the RGB. (NOTE: The RGB above should return a reddish tint.)

UPDATE 2:

My darling fiancée happened to be looking over my shoulder and noticed that in my test cases, the problem only seemed to occur when I had values in more than one RGB channel at a time.

For example:

UIColor *tint = [UIColor colorWithRed:212 green:0 blue:0 alpha:1.0];

worked, whereas

UIColor *tint = [UIColor colorWithRed:212 green:63 blue:69 alpha:1.0];

would not.

The solution?

Use colorWithHue:saturation:brightness:alpha: instead.

Answer 1

The problem is that [UIColor colorWithRed: green: blue: alpha:] takes a set of floats from 0.0f to 1.0f. You’re passing in a set of integers.