Question

I have 1 UIViewController.

in that i wrote,

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
   NSLog(@"A");
} in UIViewController.

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
    NSLog(@"b");
}

but this method is not called
why is it so?

Answer 1

You may need to do two things:

1. Tell device to track orientation changes: call [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
2. Implement your View controllers -shouldAutorotateToInterfaceOrientation method – return YES for orientations you want to support.