objective c - How to force view controller orientation in iOS 8?

Question

Before iOS 8, we used below code in conjunction with supportedInterfaceOrientations and shouldAutoRotate delegate methods to force app orientation to any particular orientation. I used below code snippet to programmatically rotate the app to desired orientation. Firstly, I am changing the status bar orientation. And then just presenting and immediately dismissing a modal view rotates the view to desired orientation.

[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight animated:YES];
UIViewController *c = [[UIViewController alloc]init];
[self presentViewController:vc animated:NO completion:nil];
[self dismissViewControllerAnimated:NO completion:nil];

But this is failing in iOS 8. Also, I have seen some answers in stack overflow where people suggested that we should always avoid this approach from iOS 8 onwards.

To be more specific, my application is a universal type of application. There are three controllers in total.

1. First View controller- It should support all orientations in iPad and only portrait (home button down) in iPhone.

2. Second View controller- It should support only landscape right in all conditions

3. Third View controller- It should support only landscape right in all conditions

We are using navigation controller for page navigation. From the first view controller, on a button click action, we are pushing the second one on stack. So, when the second view controller arrives, irrespective of device orientation, the app should lock in landscape right only.

Below is my shouldAutorotate and supportedInterfaceOrientations methods in second and third view controller.

-(NSUInteger)supportedInterfaceOrientations{
    return UIInterfaceOrientationMaskLandscapeRight;
}

-(BOOL)shouldAutorotate {
    return NO;
}

Is there any solution for this or any better way of locking a view controller in particular orientation for iOS 8. Please help!!

Answer 1

For iOS 7 - 10:

Objective-C:

[[UIDevice currentDevice] setValue:@(UIInterfaceOrientationLandscapeLeft) forKey:@"orientation"];
[UINavigationController attemptRotationToDeviceOrientation];

Swift 3:

let value = UIInterfaceOrientation.landscapeLeft.rawValue
UIDevice.current.setValue(value, forKey: "orientation")
UINavigationController.attemptRotationToDeviceOrientation()

Just call it in - viewDidAppear: of the presented view controller.