How to hold NavigationController in subViewController orientation?

Question

I have made a NavigationController structure. FirstViewController is RootViewController, SecondViewController is a next SubViewController. Each ViewController shouldAutorotateToInterfaceOrientation is a different(refer a following code). FirstViewController is only portrait available. SecondViewController all support Portrait and landscapeMode.

In FirstViewController after sth button touch, call a pushHandler. next SecondViewController is a pushed. In SecondViewController after rotated landscape back to the FirstViewController, that orientation is too landscape.

but, I implemented each ViewController orientation different. however each ViewController not independently set orientation. why happen?

How can I viewcontroller each orientation can be set independently, to do?

If SecondViewController change the orientation of the landscapeMode. I want back to the FirstViewController still portraitMode(forever hold portraitState Anything not to be affected). How do I implements programmatically?

FirstViewController *rootViewController = [FirstViewController alloc] init];

UINavigationController *MyNavigationController = [UINavigationController alloc] initWithRootViewController:rootViewController]];

//FirstViewController

- (void)pushHandler
{
    SecondViewController *subViewController = [SecondViewController alloc] init];

    [[self navigationController] pushViewController:subViewController animated:YES];
    [subViewController release];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{    
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

//SecondViewController

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{    
    return YES;
}

Cyprian Cyprian · Accepted Answer · 2011-11-18T14:07:59

Because you use a UINavigationController for all your UIViewControllers whatever orientation behaviour you will set for the UINavigationController will be applied to all it's children or in otherwords objects on its stack.

Think of a UINavigationController as a house and UIViewControllers as rooms. All the rooms in the house will rotate in the same way the house. There is no way to turn a room without turning the house and other rooms.

But as always there are tricks. Look at my answer to this question Only having one view autorotate in xcode?

How to hold NavigationController in subViewController orientation?

1 Answers