iPad Modal View rotates parentViewController View - ipad

Question

When the application is in landscape mode (which I plan to force), displaying a modal view causes the parent view to rotate to portrait mode. If I set the return value of shouldAutoRotateToInterfaceOrientation to NO, the parent does not rotate, however the modal then slides in from the side and displays sideways. Below is the code that reveals the modal.
- (IBAction)loadExistingGame:(id)sender {
SavedGamesTableViewController *savedGames = [[SavedGamesTableViewController alloc] initWithStyle:UITableViewStyleGrouped];
savedGames.modalPresentationStyle = UIModalPresentationFormSheet;
[self presentModalViewController:savedGames animated:YES];
[savedGames release];
}
As per request here is the contents of the shouldAutoRotate method of the SavedGamesTableViewController
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Override to allow orientations other than the default portrait orientation.
return YES;
}

Answer 1

Ok I figured out what needed to be done to fix it. The plist file that contains a list of the possible orientations needs to be limited to a single landscape view. The parent to the modal table view needs to have the shouldAutoRotateToInterfaceOrientation method return YES only if the orientation matches the only orientation in the plist file.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Overriden to allow any orientation.
return interfaceOrientation = UIInterfaceOrientationLandscapeRight;
}
the modal viewcontroller should return NO for the same method.

Answer 2

Based on
When the application is in landscape
mode (which I plan to force),
displaying a modal view causes the
parent view to rotate to portrait
mode.
and
As per request here is the contents of
the shouldAutoRotate method of the
SavedGamesTableViewController
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Override to allow orientations other than the default portrait orientation.
return YES;
}
So what you're saying is that the parent view controller is not yet set to force only using landscape orientation, and when you show a modal view that is set to allow all orientations, you're wondering why your parent view rotates to portrait when you rotate the device to portrait? I don't understand your question... aren't you saying that parent view controller is currently set to allow rotation to portrait? Isn't this behaviour exactly what should happen?

Answer 3

I had a similar problem when bringing up a modal mail view. Forcing the rotation didn't work for me, but calling presentModalViewController on the application's main view controller rather than a child view controller solved the issue.

Answer 4

I was seeing the same behavior; in my case the problem was I had implemented shouldAutorotateToInterfaceOrientation to return YES unconditionally for the parent view controller but NOT for the presented modal view controller. So I suspect Shaggy Frog's comment is the key: whether you want to force landscape mode or not, you need to make sure that the two view controllers' shouldAutorotateToInterfaceOrientation implementations agree or weirdness will ensue.

Answer 5

UIViewController *vc = /* create view controller */;
UINavigationController *nc = nil;
if (IOS_VERSION_LESS_THAN_6_0) {
nc = [[MyCustomNavigationControllerSupportingAllOrientations alloc] initWithRootViewController:vc];
} else {
nc = [[UINavigationController alloc] initWithRootViewController:vc];
}
[self.navigationController presentModalViewController:nc animated:YES];
On iOS6 I use a UINavigationController.
On pre-iOS6 I subclass UINavigationController, like this:
#interface MyCustomNavigationControllerSupportingAllOrientations : UINavigationController
#end
#implementation MyCustomNavigationControllerSupportingAllOrientations
-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES;
}
#end