Question

I have a container view controller say ContainerViewController and another UIViewController(PhotoViewcController) which i am adding as a childviewcontroller in ContainerViewController. So that message is forwarded from ContainerViewController to PhotoViewcController. But how can i use the two way relation in the parent child view controllers? so that message is passed form PhotoViewcController to ContainerViewController.

Answer 1

make a property in child class like this

@property (assign) id pDelegate;

and synthesize it, and when you go to child view controller, set the delegate as self before push/present as

childController.pDelegate = self;

now when you want to send the message, do this

if([self.pDelegate respndsToSelector:@selector(popedBackFromChild:)])
{
 [self.pDelegate popedBackFromChild:<some object>];
}

tell me if you need further explanation