Question

Ola Folks,

In an iPhone application I am displaying different views by using the addSubView:SomeViewController.view method.

I want to be able to, at the very least, log the view controllers that are in the view hierarchy that is being displayed. I would prefer to be able to get a handle to a specific view controller.

I know how to iterate the views, I just do not see how to access the view controllers of those views. I am looking for something that will give me the type of access to the view controllers that UINavigationController::ViewControllers does.

I thought I could get away with:

for (UIViewController* oVC in [self.view subviews])

but this is not having the intended effect.

If someone has a way of doing this, please share it with me.

-isdi-

Answer 1

A view doesn’t keep a reference to its view controller (or know anything about view controllers in general), so you’ll have to keep track of that mapping yourself. If you keep all of your view controllers in an array viewControllers, you could do something like:

- (UIViewController *) viewControllerForView:(UIView *)view {
    for (UIViewController *viewController in viewControllers)
        if (viewController.view == view)
            return viewController;
    return nil;
}