ios-UpPopoverController.DidDismiss不觸發

UpPopoverController.DidDismiss不觸發

有一個UIPopoverController，有DidDismiss

       popYear.PresentFromBarButtonItem(btnYear,UIPopoverArrowDirection.Any,true);

       popYear.DidDismiss += (sender, args) => {
          Console.WriteLine("Bye bye");
       };

如果popover被用戶關閉，DidDismiss就觸發正常。

如果popover通過viewcontroller關閉，DidDismiss就不能正常觸發。

    tbhCLose.Tapped+= () => {
       if(PopOver!=null)
         PopOver.Dismiss(false); //Won't cause DidDismiss to fire
    };

最佳回答：

如果調用了popover.Dismiss，DidDismiss就不能觸發

更優的解決反方法是監聽viewconvtroller的ViewDisappearing，然後進行更新：

       var uc = new YearViewController(SelectedYear);
       uc.ViewDisappearing+= (sender, e) => {
          this.SelectedYear = uc.SelectedYear;
          Update();
       };
       popYear = new UIPopoverController(uc);
       uc.PopOver = popYear;
       popYear.PresentFromBarButtonItem(btnYear,UIPopoverArrowDirection.Any,true);