setNavigationBarHidden:YES doesn't work with the searchDisplayController
<p>I'm using the following code to hide my navigationBar in the detailViewController(my second view),
and it works perfectly fine when I tap any of my object from the MasterViewController(my first view).</p>

<pre><code>- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];  
    [self.navigationController setNavigationBarHidden:YES animated:animated];
}
</code></pre>

<p>However, when I filter the table list in the masterViewController using searchDisplayController
and tap any object from the result, the navigationBar in the detailView doesn't get hidden...</p>

<p>Do I have to do any extra work to hide the navigationBar if I use the searchDisplayController?</p>

<p>for Debug, I set the break point on the line of setNavigationBarHidden:YES, and even if
I go to the detailViewController via search result, the application hits the line..</p>
