MonoTouch NSNotificationCenter.DefaultCenter.AddObserver now deprecated?

Question

I'm just wondering what the modern equivalent is:

NSNotificationCenter.DefaultCenter.AddObserver("UIDeviceOrientationDidChangeNotification", receivedRotate);

will be. He says that it is deprecated and that I should use AddObserver, but I'm not sure what IntPtr var to use for context.

Answer 1

You don't need the IntPtr option, if you are reading an obsolete method, it says:

"Use AddObserver (NSString, Action) instead"

So you want

NotificationCenter.DefaultCenter.AddObserver (UIDevice.OrientationDidChangeNotification, receivedRotate);