title: How to get the  'current' navigation controller from tab bar controller
body: <p>Is there is a method to retrieve tab bar controller's current visible navigation controller?</p>
  
  <p>For example, I have 2 tabbars in my program (one navigation controller each) as below</p>
  
  <pre><code>- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url 
  {   
     //Method is called when user clicks on a hyperlink in one of view controllers
      NSDictionary *dict = [self parseQueryString:[url query]];
      NSString *userID = [dict objectForKey:@"id"];
      NSString *navconTitle = [dict objectForKey:@"navcon"];
  
  
      //intention is to push a view controller onto the CURRENT navigation stack
      [navcon pushViewController:someViewController animated:YES];
  
      }
  }
  
  return YES;
  }
  </code></pre>
  
  <p>Can anyone advise me how I can determine the current navigation controller so that I can push more viewcontrollers onto it?</p>