Rotation Behaving Differently on iOS6

Rotation behaving differently on iOS6

The most important part of the documentation I found for this issue is:

When the user changes the device orientation, the system calls this
method on the root view controller or the topmost presented view
controller that fills the window

To make my app fully working for autorotation in iOS 6, I had to do the following:

1) I created a new subclass of UINavigationController, and added shouldAutorotate and supportedInterfaceOrientation methods:

// MyNavigationController.h:
#import <UIKit/UIKit.h>

@interface MyNavigationController : UINavigationController

@end

// MyNavigationController.m:
#import "MyNavigationController.h"
@implementation MyNavigationController
...
- (BOOL)shouldAutorotate {
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskAll;
}
...
@end

2) In the AppDelegate, I did use my new subclass to show my root ViewController (it is introScreenViewController, a UIViewController subclass) and did set the self.window.rootViewController, so it looks that:

    nvc = [[MyNavigationController alloc] initWithRootViewController:introScreenViewController];
    nvc.navigationBarHidden = YES;
    self.window.rootViewController = nvc;
    [window addSubview:nvc.view];
    [window makeKeyAndVisible];

Rotation behaving differently on iOS6

The most important part of the documentation I found for this issue is:

When the user changes the device orientation, the system calls this
method on the root view controller or the topmost presented view
controller that fills the window

To make my app fully working for autorotation in iOS 6, I had to do the following:

1) I created a new subclass of UINavigationController, and added shouldAutorotate and supportedInterfaceOrientation methods:

// MyNavigationController.h:
#import <UIKit/UIKit.h>

@interface MyNavigationController : UINavigationController

@end

// MyNavigationController.m:
#import "MyNavigationController.h"
@implementation MyNavigationController
...
- (BOOL)shouldAutorotate {
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskAll;
}
...
@end

2) In the AppDelegate, I did use my new subclass to show my root ViewController (it is introScreenViewController, a UIViewController subclass) and did set the self.window.rootViewController, so it looks that:

    nvc = [[MyNavigationController alloc] initWithRootViewController:introScreenViewController];
    nvc.navigationBarHidden = YES;
    self.window.rootViewController = nvc;
    [window addSubview:nvc.view];
    [window makeKeyAndVisible];

Support different orientation for only one view iOS 6

This worked for me How to force a UIViewController to Portrait orientation in iOS 6

Create a new category from UINavigationController overriding the rotating methods:

-(BOOL)shouldAutorotate
{
    return [self.topViewController shouldAutorotate];
}

-(NSUInteger)supportedInterfaceOrientations
{
    return [self.topViewController supportedInterfaceOrientations];
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return [self.topViewController preferredInterfaceOrientationForPresentation];
}

@end 

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