Swift：Popover解雇回调

概述我的Storyboard中有两个UIViewConrollers：MainViewController和SecondViewController.当用户点击名为Show Popover的按钮时,我将把SecondViewController显示为d出框： //MainViewControlleroverride func prepareForSegue(segue: UIStoryboardSe 我的Storyboard中有两个UIVIEwConrollers：MainVIEwController和SecondVIEwController.当用户点击名为Show Popover的按钮时,我将把SecondVIEwController显示为d出框：

//MainVIEwControlleroverrIDe 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}

segue的锚点连接到一个按钮：

现在我有两个问题：

>当我点击popover内的取消按钮时,它会解除d出窗口但不会在MainVIEwController中触发popoverPresentationControllerDIDdismisspopover
>我如何将数据从SecondVIEwController传递到MainVIEwController,例如UITextVIEw的文本值.

或者,更简单地说,当您手动关闭d出窗口时,只需手动调用iOS的委托方法.

dismissVIEwControllerAnimated(true,completion: nil)    popoverPresentationController?.delegate?.popoverPresentationControllerDIDdismisspopover?(popoverPresentationController!)

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