How can I query the current orientation of an iPhone/iPad screen?

Question

I was curious to know if there is some way to determine the orientation of a screen on iPhone/iPad.

Currently I find myself setting a member variable when this message is called:

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
   self.orientation = interfaceOrientation;
   return YES;
}

... which feels like something I should be able to query as a state instead of having to track it when it changes.

Answer 1

You can do [[UIDevice currentDevice] orientation].

Answer 2

UIViewController has the interfaceOrientation property.

Don't get confused by orientation in UIDevice, which is not the orientation of the interface, but the physical orientation.