title: Best way to combine UI Navigation Controller with UITabBar Controller?
body: <p>I'm at a point in the development of the app I'm working on where in order to complete the assignments given to me, it seems like the best way to accomplish what I need is to combine a <code>UINavigationController</code> with a <code>UITabBarController</code>.</p>
  
  <p>Structurally, the app has a home page, and the rest of the app is navigated through the UITabBarController. This is a sound design for the original, but when I took over the development process of this, I had to make a lot of additions to the app, and there's technically supposed to be a "second" section which adds extra "features" if you will that aren't necessarily related to the main functionality of the app itself.</p>
  
  <p>Basically, since everything begins at the Overview, the user is supposed to have a choice between just diving into the app itself, or using some of these extra features. I'm thinking the Navigation Controller would be fitting for the extra features, but I'm not sure how I can add to it. </p>
  
  <p>What I need to know is - <strong>is this solution to the problem sound? If so, what's a good way to accomplish this? Is it ok to have a separate UIWindow class to link the Navigation Controller up with the TabBar Controller?</strong></p>
  
  <p>Granted, this app has used a lot of nib files, and every time I've tried to do something programmatically, it just hasn't worked. Thus, if someone could point out a NIB method of achieving this, I'd appreciate it.</p>