IOS 6 force device orientation to landscape

Question

I gave an app with say 10 view controllers. I use navigation controller to load/unload them.

All but one are in portrait mode. Suppose the 7th VC is in landscape. I need it to be presented in landscape when it gets loaded.

Please suggest a way to force the orientation go from portrait to landscape in IOS 6 (and it will be good to work in IOS 5 as well).

Here is how I was doing it BEFORE IOS 6:

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    UIViewController *c = [[[UIViewController alloc]init] autorelease];
    [self presentModalViewController:c animated:NO];
    [self dismissModalViewControllerAnimated:NO];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

Presenting and dismissing a modal VC was forcing the app to review its orientation, so shouldAutorotateToInterfaceOrientation was getting called.

What I have have tried in IOS 6:

- (BOOL)shouldAutorotate{
    return YES;
}
-(NSUInteger)supportedInterfaceOrientations{
    return UIInterfaceOrientationMaskLandscape;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{
    return UIInterfaceOrientationLandscapeLeft;
}

On load, the controller keeps staying in portrait. After rotating the device, the orientation changes just ok. But I need to make the controller to rotate automatically to landscape on load, thus the user will have to rotate the device to see the data correctly.

Another problem: after rotating the device back to portrait, the orientation goes to portrait, although I have specified in supportedInterfaceOrientations only UIInterfaceOrientationMaskLandscape. Why it happens?

Also, NONE of above 3 methods are getting called.

Some (useful) data:

1. In my plist file I have specified 3 orientations - all but upside down.
2. The project was started in Xcode 4.3 IOS 5. All classes including xibs were created before Xcode 4.5 IOS 6, now I use the last version.
3. In plist file the status bar is set to visible.
4. In xib file (the one I want to be in landscape) the status bar is "None", the orientation is set to landscape.

Any help is appreciated. Thanks.

Answer 1

Go to you Info.plist file and make the change