Question

I am working on an iPad app (which will not be submitted to the App Store) which supports only landscape mode.

Most of the views in the application are pushed onto a UINavigationController with a hidden navigation bar.

When I add the following code in the top view controller in the aforementioned UINavigationController, the new UINavigationController (navController) is created in portrait mode and appears sideways and off-screen.

MyViewController *myViewController = [[MyViewController alloc] initWithNibName:@"MyView" bundle:nil];
// viewController.view is landscape in MyView.xib

// myViewController is created in landscape mode
NSLog(@"%@", NSStringFromCGRect(myViewController.view.frame)); // {{0, 0}, {1024, 704}}

UINavigationController *navController = [[UINavigationController alloc]
    initWithRootViewController:myViewController];

// navController is created in portrait mode (why?)
NSLog(@"%@", NSStringFromCGRect(navController.view.frame)); // {{0, 0}, {768, 1024}}

[self presentModalViewController:navController animated:YES];

// navController is shifted off-screen after it is presented modally (why?)
NSLog(@"%@", NSStringFromCGRect(navController.view.frame)); // {{1024, 0}, {748, 1024}}

I cannot find any possible reason for this to occur, nor can I figure out how to reorient the view to landscape mode; I can change its frame but its content is still sideways.

I tried adding the following to MyViewController.m to no avail:

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

I even tried adding this code to a UINavigationController subclass which did not work either.

Answer 1

I was able to get the view navigation controller to orient itself correctly by adding it as a subview of my application’s root view.

MyRootViewController *myRootViewController = [[[UIApplication sharedApplication] delegate] myRootViewController];
[myRootViewController presentModalViewController:navController animated:YES];

This code is in the top view controller of the navigation controller which is a subview of the root view.