iphone - MonoTouch : UpPopoverController. DidDismiss 未触发

Question

我有一个 UIPopoverController，它连接了 DidDismiss:

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

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

DidDismiss 会在用户点击弹出框外 关闭弹出框时正常触发。

但是，当弹出窗口在它托管的 View Controller 中关闭时，DidDismiss 不会触发:

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

Answer 1

当调用 popover.Dismiss 时，DidDismiss 不会触发。

更好的选择是监听 viewconvtroller 的 ViewDisappearing 并在那里进行更新"

           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);