title: Problem adding UIBarButtonItems to a ToolBar
body: <p>I have a UINavigationController with a UITableViewController in it. I want to show a ToolBar on the bottom with UIBarButtonItem's. The ToolBar is showing up, but the buttons won't appear. Anyone knows why?</p>
  
  <pre><code>  - (void)viewDidLoad {
          [super viewDidLoad];
       [[self navigationItem] setTitle:@"Selections List"];
       [[self navigationItem] setRightBarButtonItem:[[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(addProjectSearch:)] autorelease]];
          [[self navigationItem] setLeftBarButtonItem:[self editButtonItem]];
       [[super tableView] setDataSource: self];
       [[super tableView] setDelegate: self];
  
       //Toolbar 
       UIBarButtonItem * logoutButton = [[[UIBarButtonItem alloc] initWithTitle:@"Log out" style:UIBarButtonItemStylePlain target:self action:@selector(logOut:)]autorelease];
       NSMutableArray * arr = [NSMutableArray arrayWithObjects:logoutButton, nil];
       [[self navigationController] setToolbarHidden: NO animated:YES];
       [[self navigationController] setToolbarItems:arr animated:YES]; 
      }
  </code></pre>