title: How to hide Navigation Bar without losing slide-back ability
body: <p>I have a UITableView and it has a nav bar(got from UINavigationViewController), it's able to go back by sliding back using a finger.</p>
  
  <p>I tried to hide the nav bar but keep the slide-back ability, code:</p>
  
  <pre><code>- (void)viewWillAppear:(BOOL)animated {
      [[self navigationController] setNavigationBarHidden:YES animated:YES];
  }
  </code></pre>
  
  <p>This successfully hid the nav bar, however, I can no longer slide back to the last screen either.</p>
  
  <p>Is there any way to hide the nav bar but keep the slide-back ability?</p>