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iOS 6 rotations: supportedInterfaceOrientations doesn´t work?

I´m having this issue with iOS 6 SDK: I´m having some views that should be allowed to rotate (e.g. a videoview), and some that don´t. Now I understand I have to check all orientations in the app´s Info.plist and then sort out in each ViewController, what should happen. But it doesn´t work! The app always rotates to the orientations, that are given in the Info.plist.

Info.plist:

<key>UISupportedInterfaceOrientations</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>

any ViewController that shouldn´t be allowed to rotate:

//deprecated
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

- (NSUInteger)supportedInterfaceOrientations{
return UIInterfaceOrientationMaskPortrait;
}

Observation: App rotates to landscape and portrait orientation. Any ideas why or what I´m doing wrong?

Cheers, Marc

Edit: My latest findings also indicate, that if you want to have rotation at some point in your app, you have to activate all four rotation directions in your project settings or Info.plist. An alternative to this is to override

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window

in your AppDelegate, which overrides the Info.plist. It isn´t possible anymore to set only Portrait in your Info.plist and then having rotation in some ViewController by overriding shouldAutorotateToInterfaceOrientation or supportedInterfaceOrientations.

like image 458
stk Avatar asked Sep 13 '12 15:09

stk


4 Answers

If your ViewController is a child of a UINavigationController or UITabBarController, then it is the parent that is your problem. You might need to subclass that parent view controller, just overriding those InterfaceOrientation methods as you've shown in your question

EDIT:

Example for portrait only TabBarController

           @interface MyTabBarController : UITabBarController
            {
            }
            @end

            @implementation MyTabBarController

            // put your shouldAutorotateToInterfaceOrientation and other overrides here        
            - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
                return (interfaceOrientation == UIInterfaceOrientationPortrait);
            }

            - (NSUInteger)supportedInterfaceOrientations{ 
                return UIInterfaceOrientationMaskPortrait; 
            } 

        @end
like image 178
CSmith Avatar answered Oct 22 '22 23:10

CSmith


Adding to CSmith's answer above, the following code in a UINavigationController subclass allows delegation to the top view controller in the way that I expected this to work in the first place:

- (BOOL)shouldAutorotate;
{
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations
{
    if ([[self topViewController] respondsToSelector:@selector(supportedInterfaceOrientations)])
        return [[self topViewController] supportedInterfaceOrientations];
    else
        return [super supportedInterfaceOrientations];
}
like image 39
Evan Schoenberg Avatar answered Oct 22 '22 23:10

Evan Schoenberg


Here's another alternative to CSmith's approach.

If you want to replicate the pre-iOS 6 behaviour where all the views in the navigation stack / tab bar have to agree on an allowable set of orientations, put this in your subclass of UITabBarController or UINavigationController:

- (NSUInteger)supportedInterfaceOrientations
{
    NSUInteger orientations = [super supportedInterfaceOrientations];

    for (UIViewController *controller in self.viewControllers)
        orientations = orientations & [controller supportedInterfaceOrientations];

    return orientations;
}
like image 8
Glenn Schmidt Avatar answered Oct 23 '22 00:10

Glenn Schmidt


Try to add this category:

@interface UINavigationController(InterfaceOrientation)

@end

@implementation UINavigationController(InterfaceOrientation)

- (NSUInteger) supportedInterfaceOrientations {
    if (self.viewControllers.count > 0)
        return [[self.viewControllers objectAtIndex:0] supportedInterfaceOrientations];
    else
        return UIInterfaceOrientationMaskAll;
}

@end
like image 2
Shimanski Artem Avatar answered Oct 22 '22 22:10

Shimanski Artem