I have UINavigationBar setup as image - some wood texture. I want to insert UISegmentedControl with 4 buttons on that bar. Buttons should have same texture with slightly changed
Do not bother with one of those custom segmented control packages if you're on iOS 5 or later.
Per Dylan's suggestion, use the Appearance functionality in iOS 5+.
See the top answer here: Customizing Left & Right UISegmentedControl Buttons