Restrict orientation per view controller

Question

I want to say in each view controller which orientation he supports and restrict it to them. This is what I tried:

• Use a custom navigation controller like in one of my old posts, but that doesn't seem to work anymore. The solution is similar to iOS 6 - (BOOL)shouldAutorotate not getting called for navigation controllers pushed viewControllers

• I also tried Setting Orientation in Xamarin iOS, but the app crashes on the RootViewController. I get a NullReferenceException here.

• Furthermore I tried IOS 8 : Restricting orientation on a View Controller from the deleted blog from Shri Chakraborty (shrixamarin). Here the app also crashes if I use application:supportedInterfaceOrientationsForWindow:, because the RootViewController is null. The solution seems to be similar to How do I restrict orientation per view controller in iOS7 in a navigation controller hierarchy

None of the solutions seems to work. Or do I miss something important? How can I restrict the orientation that view controller A is landscape only, view controller B is portrait only and view controller C can be shown in all available orientations?

Answer 1

Overriding GetSupportedInterfaceOrientations() in your view controller should solve the problem:

public override UIInterfaceOrientationMask GetSupportedInterfaceOrientations ()     {
  return UIInterfaceOrientationMask.LandscapeRight;
}

The orientations you return here will be intersected with the app's allowed orientations (project properties) or with what you allow in your app delegate. So be sure to specify all orientations there or the maximum set of orientations you want to support.

See here for documentation.