calling UIview methdods

I want to call this method in a user defined function

- (BOOL)shouldAutorotateToInterfaceOrien开发者_如何学Pythontation:(UIInterfaceOrientation)interfaceOrientation

Is it possible ?? if yes,How ?? Pl. guide me.

This method should be implemented for a custom UIViewController, for instance

@interface MyViewController : UIViewController {
   ...
}
-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)io;
@end

@implementation MyViewController
-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)io {
  return io != UIInterfaceOrientationPortraitUpsideDown;
}
@end