title: nested push animation can result in corrupted navigation bar multiple warning
body: <p>I'm new in ios app developping and i'm having some trouble with multiple warnings.</p>
  
  <p>I have a Navigation Controller that load a table view.
  From that table view one touch on a cell pushes a new VC (basically, the detail of the cell).
  And on that "detailView", when a certain button is pushed, another VC is pushed.</p>
  
  <p>I push the last VC with the following code :</p>
  
  <pre><code>- (IBAction)toMoreDetail:(id)sender 
  {
      [self performSegueWithIdentifier:@"toMoreDetail" sender:self];
  }
  </code></pre>
  
  <p>And when i do that, 2 warnings are poping :</p>
  
  <pre><code>2012-08-05 02:25:41.842 appName[2145:f803] nested push animation can result in corrupted navigation bar
  2012-08-05 02:25:42.197 appName[2145:f803] Finishing up a navigation transition in an unexpected state. Navigation Bar subview tree might get corrupted.
  </code></pre>
  
  <p>I didn't find any good answer so far.
  Maybe anyone can help me with this problem.</p>
  
  <p>Thanks :)</p>
  
  <p>Edit : here is the code for the other segue :</p>
  
  <p>From the TableList to the VC of detail (the segue start from the prototype cell and goes to the detail vc) :</p>
  
  <pre><code>- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
  {
      if ([[segue identifier] isEqualToString:@"toDetailEvent"])
      {
          NSInteger selectedIndex = [[self.tableView indexPathForSelectedRow] row];
          DetailEvent* detailEvent = [segue destinationViewController];
          detailEvent.eventToDisplay = [listEvents objectAtIndex:selectedIndex];
      }
  } 
  </code></pre>