Call main view controller from container view controller

Question

I have a container view controller with its own view controller class and some UI components. Some events of this container view controller needs to call the main view controller. I'm not able to find how to do it.

class mainViewController :UIViewController {
      var containerView:UIView!
}


class MyContainerView:UIViewController {
     @IBAction func buttonClick(sender:UIButton){
         // change mainViewController background for example
      }
}

Delegate, notification, direct access, ... it depends. How are mainViewController and MyContainerView connected to each other? — Phillip Mills
– Phillip Mills, Commented Jul 24, 2015 at 12:34

Lory Huz · Accepted Answer · 2015-07-24 12:30:59Z

4

So you are trying to get the parent controller right ?

self.parentViewController

answered Jul 24, 2015 at 12:30

Lory Huz

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pbush25 · Accepted Answer · 2015-07-24 12:32:07Z

2

You should register your main view controller to listen to local notifications broadcast from your container view controller to know when it needs to perform some update function or change the UI.

In your main it would be

NSNotificationCenter.defaultCenter().addObserver(self, selector: "performUpdates:", name: "ContainerViewChangedUpdate", object: nil)

Make sure to unregister in viewWillDisappear.

In your container view controller you would send the notification.

answered Jul 24, 2015 at 12:32

pbush25

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