C# NSNotification类代码示例

			public override void ItemDidExpand (NSNotification notification)
			{
				TreeDataNode node = notification.UserInfo ["NSObject"] as TreeDataNode;
				if (node != null) {
					Console.WriteLine("Finished Expanding: " + node.Data.NodeDisplay);
				}
			}

		public void ShowDetailTargetDidChange (NSNotification notification)
		{
			foreach (var cell in TableView.VisibleCells) {
				NSIndexPath indexPath = TableView.IndexPathForCell (cell);
				WillDisplay (TableView, cell, indexPath);
			}
		}

 /// <summary>
 /// Devices the orientation did change.
 /// </summary>
 /// <param name="notification">Notification.</param>
 public static void DeviceOrientationDidChange (NSNotification notification)
 {
     var orientation = UIDevice.CurrentDevice.Orientation;
     bool isPortrait = orientation == UIDeviceOrientation.Portrait 
         || orientation == UIDeviceOrientation.PortraitUpsideDown;
     SendOrientationMessage(isPortrait);
 }

        public override void DidFinishLaunching(NSNotification notification)
        {
            suupdater.AutomaticallyChecksForUpdates = true;
            suupdater.CheckForUpdatesInBackground ();

            NewHandler (this);
        }

 void KeyboardWillShow (NSNotification notification)
 {
     var nsValue = notification.UserInfo.ObjectForKey (UIKeyboard.BoundsUserInfoKey) as NSValue;
     if (nsValue == null) return;
     var kbdBounds = nsValue.RectangleFValue;
     Scroll.Frame = ComputeComposerSize (kbdBounds);
 }

		void DataReloaded (NSNotification notification)
		{
			doc = (MonkeyDocument)notification.Object;
			alertText.Text = string.Format ("{0} dataReloaded: notification", DateTime.Now.ToString ("H:mm:ss"));
			// we just overwrite whatever was being typed, no conflict resolution for now
			docText.Text = doc.DocumentString;
		}

		public void queryNotification (NSNotification note) 
		{
			// the NSMetadataQuery will send back a note when updates are happening. By looking at the [note name], we can tell what is happening

			// the query has just started
			if (note.Name == NSMetadataQuery.DidStartGatheringNotification) {
				Console.WriteLine ("search: started gathering");
				progressSearch.Hidden = false;
				progressSearch.StartAnimation (this);
				progressSearchLabel.StringValue = "Searching....";
			}

			// at this point, the query will be done. You may recieve an update later on.
			if (note.Name == NSMetadataQuery.DidFinishGatheringNotification) {
				Console.WriteLine ("search: finished gathering");
				progressSearch.Hidden = true;
				progressSearch.StopAnimation (this);
				
				loadResultsFromQuery (note);
			} 

			// the query is still gathering results...
			if (note.Name == NSMetadataQuery.GatheringProgressNotification){
				Console.WriteLine ("search: progressing....");
				progressSearch.StartAnimation (this);

			}

			// an update will happen when Spotlight notices that a file as added, removed, or modified that affected the search results.
			if (note.Name == NSMetadataQuery.DidUpdateNotification)
				Console.WriteLine ("search: an updated happened.");
		}

        public override void DidFinishLaunching(NSNotification notification)
        {
            // Start the progress indicator animation.
            loadingProgressIndicator.StartAnimation (this);

            gameLogo.Image = new NSImage (NSBundle.MainBundle.PathForResource ("logo", "png"));
            archerButton.Image = new NSImage (NSBundle.MainBundle.PathForResource ("button_archer", "png"));
            warriorButton.Image = new NSImage (NSBundle.MainBundle.PathForResource ("button_warrior", "png"));

            // The size for the primary scene - 1024x768 is good for OS X and iOS.
            var size = new CGSize (1024, 768);
            // Load the shared assets of the scene before we initialize and load it.
            scene = new AdventureScene (size);

            scene.LoadSceneAssetsWithCompletionHandler (() => {
                scene.Initialize ();
                scene.ScaleMode = SKSceneScaleMode.AspectFill;

                SKView.PresentScene (scene);

                loadingProgressIndicator.StopAnimation (this);
                loadingProgressIndicator.Hidden = true;

                NSAnimationContext.CurrentContext.Duration = 2.0f;
                ((NSButton)archerButton.Animator).AlphaValue = 1.0f;
                ((NSButton)warriorButton.Animator).AlphaValue = 1.0f;

                scene.ConfigureGameControllers();
            });

            SKView.ShowsFPS = true;
            SKView.ShowsDrawCount = true;
            SKView.ShowsNodeCount = true;
        }

		public override void SelectionDidChange (NSNotification notification)
		{
			Console.WriteLine (notification);
			var table = notification.Object as NSTableView;
			var row = table.SelectedRow;

			// Anything to process
			if (row < 0)
				return;

			// Get current values from the data source
			var name = table.DataSource.GetObjectValue (table, new NSTableColumn("name"), row) + "";
			var id = table.DataSource.GetObjectValue (table, new NSTableColumn("id"), row) + "";

			// Confirm deletion of a todo item
			var alert = new NSAlert () {
				AlertStyle = NSAlertStyle.Critical,
				InformativeText = "Do you want to delete row " + name + "?",
				MessageText = "Delete Todo",
			};
			alert.AddButton ("Cancel");
			alert.AddButton ("Delete");
			alert.BeginSheetForResponse (windowController.Window, async (result) => {
				Console.WriteLine ("Alert Result: {0}", result);
				if (result == 1001) {
					await windowController.Delete(id);
				}
				table.DeselectAll(this);
			});
		}

		public override void DidFinishLaunching (NSNotification notification)
		{
			// Create a Status Bar Menu
			NSStatusBar statusBar = NSStatusBar.SystemStatusBar;

			var item = statusBar.CreateStatusItem (NSStatusItemLength.Variable);
			item.Title = "Text";
			item.HighlightMode = true;
			item.Menu = new NSMenu ("Text");

			var address = new NSMenuItem ("Address");
			address.Activated += (sender, e) => {
				phrasesAddress(address);
			};
			item.Menu.AddItem (address);

			var date = new NSMenuItem ("Date");
			date.Activated += (sender, e) => {
				phrasesDate(date);
			};
			item.Menu.AddItem (date);

			var greeting = new NSMenuItem ("Greeting");
			greeting.Activated += (sender, e) => {
				phrasesGreeting(greeting);
			};
			item.Menu.AddItem (greeting);

			var signature = new NSMenuItem ("Signature");
			signature.Activated += (sender, e) => {
				phrasesSignature(signature);
			};
			item.Menu.AddItem (signature);
		}

        protected void OnWillRotate(NSNotification notification)
        {
            if (!this.IsViewLoaded) return;
            if (notification == null) return;

            var o1 = notification.UserInfo.ValueForKey(new NSString("UIApplicationStatusBarOrientationUserInfoKey"));
            int o2 = Convert.ToInt32(o1.ToString());
            UIInterfaceOrientation toOrientation = (UIInterfaceOrientation)o2;
            var notModal = !(this.TabBarController.ModalViewController == null);
            var isSelectedTab = (this.TabBarController.SelectedViewController == this);

            //ConsoleD.WriteLine ("toOrientation:"+toOrientation);
            //ConsoleD.WriteLine ("isSelectedTab:"+isSelectedTab);

            var duration = UIApplication.SharedApplication.StatusBarOrientationAnimationDuration;

            if (!isSelectedTab || !notModal)
            {
                base.WillRotate(toOrientation, duration);

                UIViewController master = this.ViewControllers[0];
                var theDelegate = this.Delegate;

                //YOU_DONT_FEEL_QUEAZY_ABOUT_THIS_BECAUSE_IT_PASSES_THE_APP_STORE
                UIBarButtonItem button = base.ValueForKey(new NSString("_barButtonItem")) as UIBarButtonItem;

                if (toOrientation == UIInterfaceOrientation.Portrait
                || toOrientation == UIInterfaceOrientation.PortraitUpsideDown)
                {
                    if (theDelegate != null && theDelegate.RespondsToSelector(new Selector("splitViewController:willHideViewController:withBarButtonItem:forPopoverController:")))
                    {
                        try
                        {
                            UIPopoverController popover = base.ValueForKey(new NSString("_hiddenPopoverController")) as UIPopoverController;
                            theDelegate.WillHideViewController(this, master, button, popover);
                        }
                        catch (Exception e)
                        {
                            Console.WriteLine("There was a nasty error while notifyng splitviewcontrollers of a portrait orientation change: " + e.Message);
                        }
                    }

                }
                else
                {
                    if (theDelegate != null && theDelegate.RespondsToSelector(new Selector("splitViewController:willShowViewController:invalidatingBarButtonItem:")))
                    {
                        try
                        {
                            theDelegate.WillShowViewController(this, master, button);
                        }
                        catch (Exception e)
                        {
                            Console.WriteLine("There was a nasty error while notifyng splitviewcontrollers of a landscape orientation change: " + e.Message);
                        }
                    }
                }

            }
        }

    public void docStateChanged(NSNotification notification)
    {
        DocChange change = notification.object_().To<DocChange>();
        m_document = change.Document;

        m_exponent.setEnabled(!NSObject.IsNullOrNil(m_document));

        if (!NSObject.IsNullOrNil(m_document))
        {
            if ((change.Type & ChangeType.Palette) == ChangeType.Palette)
            {
                window().setTitle(NSString.Create(m_document.Palette.Name));
            }

            if ((change.Type & ChangeType.PaletteExponent) == ChangeType.PaletteExponent)
            {
                m_exponent.setFloatValue(m_document.PaletteExponent);
            }
        }
        else
        {
            m_exponent.setFloatValue(0.0f);
            window().setTitle(NSString.Create("Palette"));
        }
    }

		public override void DidFinishLaunching (NSNotification notification)
		{
			var menu = new NSMenu ();

			var menuItem = new NSMenuItem ();
			menu.AddItem (menuItem);

			var appMenu = new NSMenu ();
			var quitItem = new NSMenuItem ("Quit", "q", (s, e) => NSApplication.SharedApplication.Terminate (menu));
			appMenu.AddItem (quitItem);

			menuItem.Submenu = appMenu;
			NSApplication.SharedApplication.MainMenu = menu;

			m_window = new NSWindow (
				new CGRect (0, 0, 1024, 720),
				NSWindowStyle.Closable | NSWindowStyle.Miniaturizable | NSWindowStyle.Titled | NSWindowStyle.Resizable | NSWindowStyle.TexturedBackground,
				NSBackingStore.Buffered,
				false) {
				Title = "Bluebird WkBrowser",
				ReleasedWhenClosed = false,
				ContentMinSize = new CGSize (1024, 600),
				CollectionBehavior = NSWindowCollectionBehavior.FullScreenPrimary
			};
			m_window.Center ();
			m_window.MakeKeyAndOrderFront (null);

			var viewController = new ViewController ();
			m_window.ContentView = viewController.View;
			m_window.ContentViewController = viewController;
			viewController.View.Frame = m_window.ContentView.Bounds;
		}

        private void HandleKeyboardAppearing(NSNotification notification, bool movedDown)
        {
            if (movedDown)
            {
                float offset = _lastOffset*-1;

                MoveView(notification, offset);

                _lastOffset = 0;
            }
            else if (_lastOffset == 0)
            {
                var frame = (NSValue) notification.UserInfo.ObjectForKey(UIKeyboard.FrameEndUserInfoKey);
                float offset = frame.RectangleFValue.Height;
                float screenHeight = UIScreen.MainScreen.Bounds.Height;

                float position = GetPositionToMove();

                if (position > screenHeight - offset)
                {
                    offset = offset + position - screenHeight;

                    MoveView(notification, offset);

                    _lastOffset = offset;
                }
                else
                {
                    _lastOffset = 0;
                }
            }
        }

		public override void DidFinishLaunching (NSNotification notification)
		{
			mainWindowController = new MainWindowController ();

			// We create a tab control to insert both examples into, and set it to take the entire window and resize
			CGRect frame = mainWindowController.Window.ContentView.Frame;
			NSTabView tabView = new NSTabView (frame) {
				AutoresizingMask = NSViewResizingMask.HeightSizable | NSViewResizingMask.WidthSizable
			};

			NSTabViewItem firstTab = new NSTabViewItem () {
				View = new CustomDrawRectView (tabView.ContentRect),
				Label = "CustomDrawRectView"
			};
			tabView.Add (firstTab);

			NSTabViewItem secondTab = new NSTabViewItem () {
				View = new CustomLayerBasedView (tabView.ContentRect),
				Label = "CustomLayerBasedView"
			};
			tabView.Add (secondTab);

			mainWindowController.Window.ContentView.AddSubview (tabView);
			mainWindowController.Window.MakeKeyAndOrderFront (this);
		}