Question

I have a simple app that have 3 views, HomeView, MenuView and GameView.

In the HomeView I have 2 buttons (Menu and Start Game). When the menu button is clicked, I open the MenuView using the following code:

- (IBAction)displayMenu:(id)sender{
  MenuView *mv = [[MenuView alloc] init];
  [self.view addSubView:[mv view];
  [mv release];
}

In the MenuView, I have a button that will allow the user to return to the HomeView. When this button is clicked, I use the following code to return to the HomeView

- (IBAction)returnToHome:(id)sender{
  HomeView* hv = [[HomeView alloc] init];
  [self.view addSubView:[hv view];
  [hv release];
}

The above code is working but is this the correct way of doing it? I was under the impression that when I call the addSubView, the view will be retain so If keep going back and forth between HomeView and MenuView, will i have multiple instance of HomeView and MenuView retained since I keep calling addSubView from each of the view?

Thank you.

Answer 1

You could use the UINavigationController, which will allow you to push UIViewControllers on to the stack.
Using the UINavigationController you will get an nice naviagtionbar in at the top of you screen and the back button.

You can find a nice example here:http://developer.apple.com/library/ios/#documentation/uikit/reference/UINavigationController_Class/Reference/Reference.html