Hey there, I'm new to iPhone development and currently try to create some custom UI effects. I already found some code about how to add a background image to a UINavigationBar by overriding the drawing method. But now I would like to also customize the UIBarButtonItems like iBooks does. When you look at the 'Edit' or 'Store' buttons, you will notice that the wood pattern continues in the background, which makes them seem transparent. This looks way better than just using the tintColor property of the navigation bar.
Additionally, if i set the alpha of the navigation button, the text of the button will also applay to the alpha, that's not what i want.
All the thing is just like a navigation bar of iBook.