Incorrect Orientation of Views Inside Nested UINavigationController - ios

Question

I want all my views to be in Portrait mode. This works except when I push a UINavigationController onto another one. In this case the views inside the secondaryNavigationController will adhere to device orientation instead. Here is how I'm calling the UINavigationControllers.
[secondaryNavigationController setNavigationBarHidden:YES];
[[appDelegate secondaryNavigationController navigationBar] setHidden:YES];
[mainNavigationController presentModalViewController:[appDelegate secondaryNavigationController] animated:YES];
All my views implement this method but it doesn't seem to help.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

Answer 1

Careful with:
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
Since it has been deprecated on iOS 6.0. At the moment here are some issues with the rotation of UIViewControllers inside UINavigationControllers, or UITabBarControllers. To solve this, in your case, you should either sub-class the UINagivationController or create a category for it (although Apple discourages the second one more than the first). You can use this (this case is for a UITabBarController, but you can understand the logic), to check how to do the sub-classing. You can then do the following for your UIViewControllers:
-(BOOL)shouldAutorotate
{
return YES;
}
-(NSUInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskPortrait;
}
Although you are allowing to rotate (returning YES), the UIViewController will always be in Portrait. The logic here is that if you are coming from a UIViewController that's on Landscape, if you were returning NO, your UIViewController, would stay in Landscape.

Answer 2

Here is the full answer that worked for me, building off of iYaniv's comment and Jacky Boy's answer.
I took iYaniv's category and made it a subclass of UINavigationController instead of a category (which is what you should do). Then I replaced all instances of UINavigationController * with myUINavigationController *. Then used Jacky Boy's snippet in all of my UIViewControllers.
/* myUINavigationController.h */
#import <UIKit/UIKit.h>
#interface myUINavigationController : UINavigationController
#end
and
/* myUINavigationController.m */
#import "myUINavigationController.h"
#interface myUINavigationController ()
#end
#implementation myUINavigationController
-(BOOL)shouldAutorotate
{
return [[self.viewControllers lastObject] shouldAutorotate];
}
-(NSUInteger)supportedInterfaceOrientations
{
return [[self.viewControllers lastObject] supportedInterfaceOrientations];
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
return [[self.viewControllers lastObject] preferredInterfaceOrientationForPresentation];
}
#end