title: How can we navigate back to previous view programmatically in iPhone?
body: <p>I am working on iPhone application which based on navigation controller. for example there are 2 views here.</p>
  
  <p>A (UITableViewController) and B (ViewController)</p>
  
  <p>the quest is here. when user select an item in View A. The application will force navigation controller to hide navigation bar before push View B to be showed, like the statement below:</p>
  
  <pre><code>self.navigationController.navigationBarHidden = YES;
  [self.navigationController pushViewController:controllerB animated:TRUE];
  </code></pre>
  
  <p>That is, View B is there. but How can available user to navigate back to View A without navigation bar? In this case, we will use a button 'back' to let user tap on it to navigate back to View A. Could you help me?</p>