title: Problems with UINavigationController inside of UITabBarController, viewWillAppear not called
body: <p>As an overview, I'm having issues with a UINavigationController inside of a UITabBarController calling viewWillAppear whenever a view is popped from the stack. </p>
  
  <p>From the delegate, a UITabBarController is made programmatically: </p>
  
  <pre><code>// Create views for Tab Bar
      UINavigationController *view1   = [[UINavigationController alloc] initWithRootViewController:[[newsFeedNavigationController alloc] initWithStyle:UITableViewStylePlain]];
      resizedTabBatItem *tabBarItem1 = [[resizedTabBatItem alloc] initWithTitle:nil image:[UIImage imageNamed:@"newspaper.png"] tag:0];
      [view1 setTabBarItem:tabBarItem1];
      [tabBarItem1 release];
  
      UIViewController *view2   = [UIViewController new];
      resizedTabBatItem *tabBarItem2 = [[resizedTabBatItem alloc] initWithTitle:nil image:[UIImage imageNamed:@"speechbubble.png"] tag:1];
      [view2 setTabBarItem:tabBarItem2];
      [tabBarItem2 release];
  
  ....
  
  // Create the tab bar controller
      bookTabBarController = [BookTabBarController new];
      [[bookTabBarController view] setFrame:CGRectMake(0, 0, 320, 460)];
  
      // Add the views to it
      NSArray *viewControllers = [NSArray arrayWithObjects:view1, view2, view3, view4, view5, nil];
  
      [[bookTabBarController tabBarController] setViewControllers:viewControllers];
  </code></pre>
  
  <p>My newsFeedNavigationController is just a subclassed UITableViewController (and the subclass is not interfering with viewWillAppear, as it's never called in newsFeedNavigationController). In it, items that when clicked will push a new UIViewController into the stack. </p>
  
  <p>The problem is that whenever views are popped off the stack, viewWillAppear is never called in newsFeedNavigationController, and the items in the list remain highlighted. I've been messing with this for a few hours am at the point where I need some help to find out what I am doing wrong.</p>
  
  <p>In my newsFeedNavigationController, I tried to add an NSLog to see if it is called or I did something, but it is never even called.</p>
  
  <pre><code>- (void)viewWillAppear:(BOOL)animated {
      NSLog(@"is viewWillAppear called?");
      [super viewWillAppear:animated];
  }
  </code></pre>
  
  <p><strong>Edit:</strong></p>
  
  <p>Okay, now here is something weird I noticed:</p>
  
  <p>If I run: </p>
  
  <pre><code>[self presentModalViewController:(any UIview) animated:YES];
  </code></pre>
  
  <p>and then dismiss it, viewWillAppear begins to work properly when popping and pushing views... So now I am stumped. It's not really a solution but maybe an inside of something that is going on.</p>