How do I texture controls on iPhone Apps?

I would like to apply a texture to my iPhone app similar to the tab bar in GameCenter.app. Is there a good tutorial somew开发者_Go百科here that explains this? I am hoping for a method that will translate easily to other controls as well. Thanks!

---

A simple way to add texture for backgrounds is to use the built in colorWithPatternImage.

UIImage *image = [UIImage imageNamed:@"backgroundPattern"];
[self setBackgroundColor:[UIColor colorWithPatternImage:image]];

If you have a toolbar you should be able to use your "Patternized UIView" with UIBarButtonItem, one of its initializers take a UIView.