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Think about the object hierarchy, it needs to look like this:

Code:
    UIWindow
        UITabBarController
            UINavigationController
                MyMainViewController
            SomeOtherControllerShownInTheTabBar
            ...

Or, in other words, the tab bar is the container object and -- within each tab -- you can have whatever UIViewControllers you want (including UINavigationController, UITableViewController, etc.) :)
 
hi,

i've embedded the a nav controller in my tab bar.
but doing this does it "replace" the code completely?

I'm not sure what you mean. Perhaps you could paste the whole of the applicationDidFinishLaunching method?

tab view gets load up fine but it is unable to receive a notification.
thks

What do you mean by "notification"?
 
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