Trick preferredInterfaceOrientationForPresentation to fire on viewController change

Question

I am using MSNavigationPaneViewController from here and have rotation sort of working. I\'ve overridden the rotation methods in my root UINavigationContro

Answer 1

You can trick the window into re-valuating its supported interface orientations by resetting its rootViewController.

UIApplication *app = [UIApplication sharedApplication];
UIWindow *window = [[app windows] objectAtIndex:0];
UIViewController *root = window.rootViewController;
window.rootViewController = nil;
window.rootViewController = root;

You'd need to make sure that when this code executes, -supportedInterfaceOrientations of the root view controller returns the proper mask (corresponding to how you want to force the orientation).

Be aware, this hack can cause a quick flash on the screen and glitch any ongoing animations.