Is there a way to call a function when the interface rotates in Iphone?

Question

When my interface rotates i want to call certain functions. How can I do these actions?

Answer 1

Depending on what you want to do,

Implement some of these methods in your active view controller class:

• -willRotateToInterfaceOrientation:duration:
• -willAnimateRotationToInterfaceOrientation:duration:
• -didRotateFromInterfaceOrientation:

Or some of these methods in your app delegate:

• -application:willChangeStatusBarOrientation:duration:
• -application:didChangeStatusBarOrientation:

Or listen to some of these local notifications:

• UIApplicationWillChangeStatusBarFrameNotification
• UIApplicationDidChangeStatusBarFrameNotification
• UIApplicationWillChangeStatusBarOrientationNotification
• UIApplicationDidChangeStatusBarOrientationNotification

Answer 2

You can use this:

   [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];

   [[NSNotificationCenter defaultCenter] addObserver:self
      selector:@selector(yourMethod:)
      name:@"UIDeviceOrientationDidChangeNotification" object:nil];