How to pass userInfo in NSNotification?
You get an NSNotification object passed to your function. This includes the name, object and user info that you provided to the NSNotificationCenter.
- (void)orientationChanged:(NSNotification *)notification
{
NSDictionary *dict = [notification userInfo];
}
Your selector must have : to accept parameters.
e.g.
@selector(orientationChanged:)
then in the method declaration it can accept the NSNotification parameter.