Swift: Popover dismiss callback

Question

There are two UIViewConrollers in my Storyboard: MainViewController and SecondViewController. I'm going to show SecondViewController as a popover when user taps a button called Show Popover:

//MainViewController
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)
{

    if segue.identifier == "GoToSecondViewControllerSegue"
    {
        var vc = segue.destinationViewController as! SecondViewController
        var controller = vc.popoverPresentationController

        if controller != nil
        {
            controller?.delegate = self
            vc.inputTextDelegate = "I'm a popover!"
        }
    }
}

func popoverPresentationControllerDidDismissPopover(popoverPresentationController: UIPopoverPresentationController) {
     println("done")
}

func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle
{
    return .None
}

---

//SecondViewController
@IBAction func dismissPopover(sender: UIButton) {
     dismissViewControllerAnimated(true, completion: nil)
     //This dismisses the popover but does not notify the MainViewConroller
}

The anchor of segue is connected to a button:

Now I have two problems:

1. When I tap the cancel button inside the popover it dismisses the popover but does not trigger popoverPresentationControllerDidDismissPopover inside the MainViewController

2. How can I pass data from the SecondViewController to the MainViewController, text value of a UITextView for example.

Answer 1

Or, more simply, just call iOS's delegate method manually when you dismiss the popover manually.

    dismissViewControllerAnimated(true, completion: nil)
    popoverPresentationController?.delegate?.popoverPresentationControllerDidDismissPopover?(popoverPresentationController!)