Conflicting return type in implementation of 'supportedInterfaceOrientations': - Warning

After upgrading to Xcode 7.0 I get a warning in the UIViewControllerRotation method: - (NSUInteger)supportedInterfaceOrientations:

> Conflicting return type in implementation of > 'supportedInterfaceOrientations': 'UIInterfaceOrientationMask' (aka > 'enum UIInterfaceOrientationMask') vs 'NSUInteger' (aka 'unsigned > int')

Why is that, and how do I fix it?

EDIT: If you go to the definition you'll see that the return type acctually has changed: - (UIInterfaceOrientationMask)supportedInterfaceOrientations NS_AVAILABLE_IOS(6_0); but changing the return type in the code doesn't silence the warning.

Try this tweak:

#if __IPHONE_OS_VERSION_MAX_ALLOWED < 90000  
- (NSUInteger)supportedInterfaceOrientations  
#else  
- (UIInterfaceOrientationMask)supportedInterfaceOrientations  
#endif  
{
   return UIInterfaceOrientationMaskPortrait;
}

I am using this one:

#if __IPHONE_OS_VERSION_MAX_ALLOWED < __IPHONE_9_0
#define supportedInterfaceOrientationsReturnType NSUInteger
#else
#define supportedInterfaceOrientationsReturnType UIInterfaceOrientationMask
#endif

- (supportedInterfaceOrientationsReturnType)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskPortrait;
}

... a little bit longer than Nishant's fix but a little bit clearer, I think.

I have been at this for a few weekends to figure out the proper solution, I have tried many others solutions but just did not work properly. If you want only certain UI to be in landscape or Portrait try this method below. I am running Xcode 7.2.1 , I am using a Bool to set the value along with NSUSerDefaults in each Class I want to follow specific UIInterfaceOrientations.The method below gets called each time there is a new UI presented or when the device is rotated , you could check this by putting a NSLog checking the value of the bool in that method and see for yourself how it changes.

- (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:

In you AppDelegate do the following

.h @property (assign, nonatomic) BOOL shouldRotate;

.m

- (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(nullable UIWindow *)window  NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED{


_shouldRotate = [[NSUserDefaults standardUserDefaults]boolForKey:@"rotateKey"];
NSLog(@"Did I get to InterfaceOrientation \n And the Bool is %d",_shouldRotate);

if (self.shouldRotate == YES)
            return UIInterfaceOrientationMaskAllButUpsideDown;
        else
            return UIInterfaceOrientationMaskPortrait;

}

NOW IN EVERY CLASS YOU WANT TO HAVE A SPECIFIC UIINTERFACEORIENTATION DO THIS

 -(void)viewDidAppear:(BOOL)animated{
    
    [super viewDidAppear:YES];
   
   // [[AppDelegate sharedAppDel]setShouldRotate:YES];
    BOOL rotate = NO;
    [[NSUserDefaults standardUserDefaults]setBool:rotate forKey:@"rotateKey"];
    [[NSUserDefaults standardUserDefaults]synchronize];

}
-(BOOL)shouldAutorotate
{
    return YES;
}

In the Views you want to rotate change the Bool value to Yes. Now in your AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
  
    BOOL rotate = NO;
    [[NSUserDefaults standardUserDefaults]setBool:rotate forKey:@"rotateKey"];
    [[NSUserDefaults standardUserDefaults]synchronize];
    

    return YES;
}

Also in your AppDelegate

- (void)applicationWillTerminate:(UIApplication *)application {
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    
    BOOL rotate = NO;
    [[NSUserDefaults standardUserDefaults]setBool:rotate forKey:@"rotateKey"];
    [[NSUserDefaults standardUserDefaults]synchronize]; 
}

Hope this helps many developers. Tested and Tested many times.

Regards

JZ