ios - Unable to lock orientation on iPad Air 2

Question

The iOS application I am working on has a view that needs to be locked in landscape orientation. Up to this point, that was accomplished by using the shouldAutorotate and supportedInterfaceOrientations methods, but on an iPad Air 2 running iOS9 beta5, these methods never fire and the orientation is not locked.

I have tried on the following devices, methods fired on all except the Air2 (running debug with Xcode beta6): iPhone 6+, iPad Mini, iPad Air 2, iPad 2, iPad 3

The methods not firing are as follows:

- (BOOL)shouldAutorotate {
    return YES;
}

- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskLandscape;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    return UIInterfaceOrientationMaskLandscapeRight;
}

View controller is displayed via presentViewController

Answer 1

Multitasking can be turned off by adding the UIRequiresFullScreen field to the application's info.plist with the boolean value YES, and this will allow the orientation delegate methods shouldAutorotate, preferredInterfaceOrientation, and supportedInterfaceOrientations to fire.

As far as locking orientation AND supporting multitasking, I have not found a way to do this.