Problem returning to prior ViewControllers view when pressing back button

[cslynge]

Hi there,

Have made a view switcher app in which I have a menu with three buttons (Catalogue, Instructions and Settings). My StartViewController controls the three button methods, and thereby switches between the views. I have no problem going from the MenuViewController to one of the "three buttons" views:

- (IBAction)instructionsButtonPressed:(id)sender{
     if (self.instructionsViewController.view.superview == nil) {
          if (self.instructionsViewController == nil) {
               InstructionsViewController *instructionsController = [[InstructionsViewController alloc]initWithNibName:@"InstructionsView" bundle:nil];
               self.instructionsViewController = instructionsController;
               [instructionsController release];
          }
          [menuViewController.view removeFromSuperview];
          [self.view addSubview:instructionsViewController.view];
     }
}

But when I now (from inside the InstructionsViewController) want to go back by pressing my back button, nothing happens:

- (IBAction)backButtonPressed:(id)sender{
     StartViewController *back = [[StartViewController alloc] init];
     [back setBackMenuView];

     ARAppDelegate *ads = [[UIApplication sharedApplication] delegate];
     [ads showStartView];
}

As seen I call two methods. One from the delegate and one from my StartViewController. I both remove my StartViewControllers view (the three buttons) and add them again, and then I also remove my InstructionsViewController view and add the Menu view, exactly like when I entered the Instructions view:

- (void)showStartView {
     [self.startViewController.view removeFromSuperview];
     [self.window addSubview:self.startViewController.view];
}

- (void)setBackMenuView{
     if (self.menuViewController.view.superview == nil) {
           if (self.menuViewController == nil) {
                MenuViewController *menuController = [[MenuViewController alloc]initWithNibName:@"MenuView" bundle:nil];
                self.menuViewController = menuController;
                [menuController release];
           }
           [instructionsViewController.view removeFromSuperview];
           [self.view addSubview:menuViewController.view];
      }
}

As I said, nothing happens when I press the back button. Don't know if it is due to some hierachy in the Interface Builder (also why I first remove my StartViewController and then add it again).

Thanks in advance,

Casper