UINavigationController and back button action

Question

I have an two controllers 1st is self and 2nd is maincontroller, where I\'m pushing maincontroller in stack

Answer 1

viewControllerCount - is the var that holds the number of viewControllers previously was in the UINavigationController. Then, we check if viewControllerCount > [viewControllers count] if so, we know that we will get back (i.e. Back button imitation).

- (void)navigationController:(UINavigationController *)navigationController
      willShowViewController:(UIViewController *)viewController
                    animated:(BOOL)animated
{
    NSArray *viewControllers = [navigationController viewControllers];

    if (viewControllerCount > [viewControllers count])
    {
        // your code
    }

    viewControllerCount = [viewControllers count];
}