colors dont show up on UINavigationBar

I know this may be a pretty open ended question, but I am trying to set a different color to my navigation bar using this:

self.navigationController.navigationBar.tintColor = [UIColor greenColor];

And from some reason in one view controller I do get green color and in anot开发者_Go百科her one I am not getting the green color. I am calling this in viewdidLoad.

Is there something that could override that? (I am not overriding drawRect).

Happy to provide any code if necessary, but this really puzzels me.

Thanks!

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Maybe you're using a second UINavigationController instance in one of your view controllers? That could happen if you're presenting a UIViewController modally (UIViewController method presentModalViewController:animated:).

If you're presenting a UIViewController that's not on the same "navigation stack" (managed by the original UINavigationController), you would have to apply the same tintColor to its UINavigationBar.