iOS 7 Interface Orientation

In my app for iPhone its only support the portrait view only, but as per requirement need to support landscape view only for on view, at that time I use following way and its help me :

In your app delegate .h

@interface PlayWithWSWithLibAppDelegate : NSObject <UIApplicationDelegate, UITabBarControllerDelegate> {

       BOOL flagOrientationAll;
}

@property (assign) BOOL flagOrientationAll;

Add following method in your app delegate .m file

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
    //NSLog(@"PlayWithWSWithLibAppDelegate -- supportedInterfaceOrientationsForWindow");
    if([UICommonUtils isiPad]){
        return UIInterfaceOrientationMaskAll;
    }else if(flagOrientationAll == YES){
        return UIInterfaceOrientationMaskAll;
    } else {
        return UIInterfaceOrientationMaskPortrait;
    }
}

Implement following way in your view which you want to rotate in both portrait and landscape both for iPhone device

-(void)viewWillAppear:(BOOL)animated
{
    self.tabBarController.delegate = self;

    PlayWithWSWithLibAppDelegate *delegate = (PlayWithWSWithLibAppDelegate *) [[UIApplication sharedApplication] delegate];
    delegate.flagOrientationAll = YES;
 }
}

-(void)viewWillDisappear:(BOOL)animated
{
    //NSLog(@"viewWillDisappear -- Start");
     PlayWithWSWithLibAppDelegate *delegate = (PlayWithWSWithLibAppDelegate *)[[UIApplication sharedApplication] delegate];
        delegate.flagOrientationAll = NO;
}

see this post also: How to set one of the screens in landscape mode in iphone?

Handling Interface Orientation with Animation in iOS7

Since there was no answer, I was forced to dig through old documentations and spend a few days trying out various solutions. Long story short: the below method do the job just done (I hope it will help people who want to support legacy devices):

- (void) willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
    // Typecast the interface orientation to which the app is transitioning
    UIDeviceOrientation orientation = (UIDeviceOrientation)toInterfaceOrientation;

    // Call method that handles the resizing
    [self handleInterfaceOrientation:orientation withDuration:duration];
} // <- For leagcy iOS7 support

- (void)handleInterfaceOrientation:(UIDeviceOrientation)toInterfaceOrientation withDuration:(NSTimeInterval)duration {

    // Calculate screen size the app is transitioning to (ignore iOS8-only devices, such as iPhone 6 and newer)
    if ( (toInterfaceOrientation == UIInterfaceOrientationPortrait) || (toInterfaceOrientation == UIInterfaceOrientationPortraitUpsideDown) ) {
        if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
            if ([[UIScreen mainScreen] bounds].size.height > 480.0f) {
                windowSize          = CGSizeMake(320.0f, 568.0f);
            } else {
                windowSize          = CGSizeMake(320.0f, 480.0f);
        }
        } else {
                windowSize          = CGSizeMake(768.0f, 1024.0f);
        }
    } else {
        if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
            if ([[UIScreen mainScreen] bounds].size.height > 480.0f) {
                windowSize          = CGSizeMake(568.0f, 320.0f);
            } else {
                windowSize          = CGSizeMake(480.0f, 320.0f);
            }
        } else {
                windowSize          = CGSizeMake(1024.0f, 768.0f);
        }
    }

    // Animate UI elements to new dimension
    [UIView animateWithDuration:duration
                          delay:0.0f
                        options: UIViewAnimationOptionCurveEaseInOut
                     animations:^{
                         [self populateGalleryScrollView];
                     } completion:^(BOOL finished) {
                         // Once rotation is done, disable the rotation view
                        rotationView.alpha                      = 0.0f;
     }];
} // <- For legacy iOS7 support

iOS 7: How to allow only portrait orientation for VC

If you want different orientation for view controllers, In AppDelegate add this method -

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
    NSUInteger orientations = UIInterfaceOrientationMaskAllButUpsideDown;

    if(self.window.rootViewController){
        UIViewController *presentedViewController = [[(UINavigationController *)self.window.rootViewController viewControllers] lastObject];
        orientations = [presentedViewController supportedInterfaceOrientations];
    }

    return orientations;
}

and in your ViewController -

-(BOOL)shouldAutorotate{
    return YES;
}

-(NSUInteger)supportedInterfaceOrientations{
    return (UIInterfaceOrientationMaskAll);//Change this according to your need
}

Hope this will help.