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显示为弹出框：
//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
}
现在我有两个问题：
>当我点击popover内的取消按钮时,它会解除弹出窗口但不会在MainViewController中触发popoverPresentationControllerDidDismissPopover
>我如何将数据从SecondViewController传递到MainViewController,例如UITextView的文本值.
