How to show UIToolBar at bottom of UIView after pop to root of UINavigationController? -

I can not show UIToolbar under a scene, where the footage was pushed to the navigation controller and then using the pop button back See.

I have created a NIB in:

  UIViewController RootViewController in which a UIView UIToolbar containing UIView  

I next UIViewController, NextViewController In which I create a navigation controller:

  UIViewController RootViewController in which a NavigationController with a UIViewController NextViewController  

In the NextViewController I can see the Uitoolbar from RootViewController. When I go back to the NextViewController, using the back button from the navigation controller, then I can not see the Uitoolbar from RootViewController. Does anyone know how to show UIToolbar?

The work I did was thought that UITULBAR is to get an indicator and add it to the navigation controller as a subview:

  AppDelegate * appDelegate = [[UIApplication shared application] representative]; RootViewController * RootviewController = appDelegate.rootViewController; UIView * rootViewUIView = rootViewController.view; UIToolbar * rootViewUIToolbar = rootViewUIView.toolbar; [Self.navigationController.view addSubview: rootViewUIToolbar];  

But I get an error: "Request root Root VUUUTUblule" is not a structure or a union for something:

  UIToolbar * rootViewUIToolbar = RootViewUIView .toolbar;  

Any ideas on how to show the toolbar after the back button pops back from the navigation controller to the original view?