C# UIView.RemoveFromSuperview方法代码示例

        public override void ViewDidLoad()
        {
            base.ViewDidLoad();
            View.BackgroundColor = UIColor.White;
            View.AutoresizingMask = UIViewAutoresizing.FlexibleDimensions;

            // Adjust taps/touches required to fit your needs.
            UITapGestureRecognizer tapRecognizer = new UITapGestureRecognizer() {
                NumberOfTapsRequired = 1,
                NumberOfTouchesRequired = 1,
            };
            tapRecognizer.AddTarget((sender) => {
                // The foreach is only necessary if you have more than one touch for your recognizer.
                // For all else just roll with zero, `PointF location = tapRecognizer.LocationOfTouch(0, View);`
                foreach (int locationIndex in Enumerable.Range(0, tapRecognizer.NumberOfTouches)) {
                    PointF location = tapRecognizer.LocationOfTouch(locationIndex, View);
                    UIView newTapView = new UIView(new RectangleF(PointF.Empty, ItemSize)) {
                        BackgroundColor = GetRandomColor(),
                    };
                    newTapView.Center = location;
                    View.Add(newTapView);
                    // Remove the view after it's been around a while.
                    Task.Delay(5000).ContinueWith(_ => InvokeOnMainThread(() => {
                        newTapView.RemoveFromSuperview();
                        newTapView.Dispose();
                    }));
                }
            });
            View.AddGestureRecognizer(tapRecognizer);
        }

 private void FadeToView(UIView fromView, UIView toView)
 {
     UIView.Animate(0.15, 0, UIViewAnimationOptions.CurveEaseIn, () => fromView.Alpha = 0, () => {
         fromView.RemoveFromSuperview();
         toView.Alpha = 0;
         ContentView.Add(toView);
         UIView.Animate(0.15, 0, UIViewAnimationOptions.CurveEaseOut, () => toView.Alpha = 1, null);
     });
 }

		public TSCustomNavController ()
		{
			MenuButton = new UIButton (new CGRect (10, 5, 25, 25));
			MenuButton.SetImage (new UIImage ("menu_icon.png"), UIControlState.Normal);
			mainView = new UIView (new CGRect (0.0f, 64.0f, 275, 0));
			logoutVIew = new UIView (new CGRect (0.0f, 0.0f, 275, 150));

// it's use to display user name for iPhone

//			if (TSPhoneSpec.UserInterfaceIsPhone) {
//				lblName = new UIButton (new CGRect (MenuButton.Frame.X + MenuButton.Frame.Width + 5, 5, 130, 30));
//				//				lblName.SetTitle("John Anderson",UIControlState.Normal);
//				lblName.Font = UIFont.SystemFontOfSize(15.0f);
//				lblName.SetTitleColor (UIColor.DarkGray, UIControlState.Normal);
//			} else {

				imgUser = new UIImageView (new CGRect (MenuButton.Frame.X + MenuButton.Frame.Width + 5, 5, 30, 30));
				imgUser.Image = new UIImage ("user_icon.png");
				imgUser.Layer.CornerRadius = 17;
				imgUser.ClipsToBounds = true;
				this.NavigationBar.AddSubview (imgUser);
				lblName = new UIButton (new CGRect (imgUser.Frame.X + imgUser.Frame.Width + 5, 5, 130, 30));
				//				lblName.SetTitle("John Anderson",UIControlState.Normal);
				lblName.Font = UIFont.SystemFontOfSize(15.0f);
				lblName.SetTitleColor (UIColor.DarkGray, UIControlState.Normal);
//			}

			lblName.TouchUpInside += (object sender, EventArgs e) => {
				Console.WriteLine("BtnClicked");
				if(mainView.Frame.Height == 0){
					logOutView();
					//					var obj= new TSUserLogoutView();
					//					AddLogOutView(obj.getUserLogoutView ());					
				}else{
					mainView.Frame = new CGRect (0.0f, 64.0f, 275, 0.0f);
					mainView.RemoveFromSuperview();
					logoutVIew.RemoveFromSuperview();
				}
			};

			SearchButton = new UIButton (new CGRect (TSPhoneSpec.ScreenWidth - 70, 40, 60, 30));
			SearchButton.SetBackgroundImage (new UIImage ("logo.PNG"), UIControlState.Normal);
			txtSearch = new UITextField (new CGRect (20, 5, 200, 30));

			//			this.View.AddSubview (logoutVIew);
			this.NavigationBar.AddSubview (MenuButton);
			this.NavigationBar.AddSubview (SearchButton);
			this.NavigationBar.AddSubview (lblName);
			this.NavigationBar.BackgroundColor = UIColor.FromRGB (255, 255, 255);
			setLogoutView ();
		}

        void RunDebugUI()
        {
            var rect = new RectangleF (10, 20, 280, 400);
            var top = new UIView (rect){
                BackgroundColor = UIColor.FromRGBA (0, 0, 0, 100)
            };
            var button = UIButton.FromType (UIButtonType.RoundedRect);
            button.Frame = new RectangleF (10, 340, 80, 36);
            button.SetTitle ("Done", UIControlState.Normal);
            button.TouchDown += delegate {
                top.RemoveFromSuperview ();
                timer.Dispose ();
            };
            top.AddSubview (button);
            rect = new RectangleF (5, 5, 270, 350);
            var dbg = new ImageLoaderDebug (rect);
            top.AddSubview (dbg);
            window.AddSubview (top);

            timer = new System.Threading.Timer (x => { BeginInvokeOnMainThread (dbg.Layout); }, null, 500, 500);
        }

        public override void AnimateTransition(IUIViewControllerContextTransitioning transitionContext, 
		                                        UIViewController fromViewController, UIViewController toViewController, 
		                                        UIView fromView, UIView toView)
        {
            UIView containerView = transitionContext.ContainerView;
            containerView.AddSubview (toView);
            containerView.SendSubviewToBack (toView);

            double duration = TransitionDuration (transitionContext);
            NSAction animation = () => {
                fromView.Alpha = 0f;
            };

            UIView.Animate (duration, animation, () => {
                if (transitionContext.TransitionWasCancelled) {
                    fromView.Alpha = 1f;
                } else {
                    fromView.RemoveFromSuperview ();
                    fromView.Alpha = 1f;
                }

                transitionContext.CompleteTransition (!transitionContext.TransitionWasCancelled);
            });
        }

        public override void Scrolled(UIScrollView scrollView)
        {
            if (scrollView.Dragging && _controller.HasMorePages && _controller.EnableInfinitePaging)
                {
                    float threshold = scrollView.ContentSize.Height - scrollView.Bounds.Height;
                    if (scrollView.ContentOffset.Y > threshold - 160 && !_controller._pagingActionInProgress)
                    {
                        Console.WriteLine("starting infinite loading");
                        _controller._pagingActionInProgress = true;

                        var existingInset = scrollView.ContentInset;
                        float bottom = existingInset.Bottom;
                        existingInset.Bottom += 60;
                        scrollView.ContentInset = existingInset;

                        var view = new UIView(new RectangleF(0, scrollView.ContentSize.Height, scrollView.Bounds.Width, 60));
                        scrollView.Add(view);

                        var indicator = new UIActivityIndicatorView(UIActivityIndicatorViewStyle.Gray);
                        indicator.Center = new PointF(view.Bounds.Width / 2, view.Bounds.Height / 2);
                        indicator.HidesWhenStopped = true;
                        indicator.StartAnimating();
                        view.Add(indicator);

                        _controller._tableView.BeginUpdates();
                        int position = _controller._items[0].Item2.Count;

                        _controller.InfinitePagingAction(addedCount => {
                            Console.WriteLine ("inside infinite paging action");
                            indicator.StopAnimating();
                            view.RemoveFromSuperview();
                            var ex = scrollView.ContentInset;
                            ex.Bottom = bottom;
                            scrollView.ContentInset = ex;

                            _controller._tableView.InsertRows(Enumerable.Range(position, addedCount).Select(r => NSIndexPath.FromRowSection(r, _controller.PagingSectionIndex)).ToArray(), UITableViewRowAnimation.Fade);
                            _controller._tableView.EndUpdates();

                            NSTimer.CreateScheduledTimer(1, delegate {
                                _controller._pagingActionInProgress = false;
                            });
                        });
                    }
                }
        }

		public void displayToastWithMessage(NSString toastMessage,NSString typeLabel)
		{   
			   
			UIWindow keyWindow = UIApplication.SharedApplication.KeyWindow;
			if(toastView!=null)
				{
				toastView.RemoveFromSuperview();
				}


			toastView = new UIView ();
			UILabel label1 = new UILabel ();
			UILabel label2=new UILabel ();
			label1.TextColor = label2.TextColor = UIColor.White;
			label1.Font = UIFont.SystemFontOfSize (16);
			label1.Text= toastMessage;
			label2.Text = typeLabel;
			label2.Font =UIFont.SystemFontOfSize (12);
			label1.TextAlignment = label2.TextAlignment = UITextAlignment.Center;;
			toastView.AddSubview (label1);
			toastView.AddSubview (label2);

			toastView.Alpha =1;

			toastView.BackgroundColor = UIColor.Black.ColorWithAlpha (0.7f);
			toastView.Layer.CornerRadius = 10;

			CGSize expectedLabelSize1= toastMessage.GetSizeUsingAttributes (new UIStringAttributes() { Font = label1.Font });
			CGSize expectedLabelSize2= typeLabel.GetSizeUsingAttributes (new UIStringAttributes() { Font = label2.Font });
			keyWindow.AddSubview(toastView);
			toastView.Frame = new CGRect(0.0f, 0.0f, Math.Max(expectedLabelSize1.Width, expectedLabelSize2.Width)+20, 45.0f);
			label1.Frame = new CGRect(0.0f, 5.0f, Math.Max(expectedLabelSize1.Width, expectedLabelSize2.Width)+15, 15.0f);
			label2.Frame = new CGRect(0.0f, 25.0f, Math.Max(expectedLabelSize1.Width, expectedLabelSize2.Width)+15, 15.0f);


			toastView.Center = markerView.Center;


				UIView.Animate (4, 0, UIViewAnimationOptions.CurveEaseInOut,
					() => {
						toastView.Alpha= 0.7f;
						}, 
				() => {
					
					toastView.RemoveFromSuperview();
						 }
				);


		}

        protected override void HandleLongPressGesture()
        {
            switch (LongPressGestureRecognizer.State)
            {
                case UIGestureRecognizerState.Began:
                    {
                        // we try to grab the current seelected item and draw a floating copy of it on the Drag Surface
                        // the copy is just an image of it using RasterizedImage
                        var currentIndexPath = CollectionView.IndexPathForItemAtPoint(LongPressGestureRecognizer.LocationInView(CollectionView));

                        SelectedItemIndexPath = currentIndexPath;
                        if (SelectedItemIndexPath == null)
                            return;

                        if (!DataSource.CanMoveItemAtIndexPath(SelectedItemIndexPath))
                            return;

                        var collectionViewCell = CollectionView.CellForItem(SelectedItemIndexPath);

                        var tpoint = DragSurface.ConvertPointFromView(collectionViewCell.Frame.Location, CollectionView);
                        RectangleF frame = new RectangleF(tpoint.X, tpoint.Y, collectionViewCell.Frame.Size.Width, collectionViewCell.Frame.Size.Height);
                        CurrentView = new UIView(frame);

                        collectionViewCell.Highlighted = true;
                        var highlightedImageView = new UIImageView(RastertizedImage(collectionViewCell));
                        highlightedImageView.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight;
                        highlightedImageView.Alpha = 1.0f;

                        collectionViewCell.Highlighted = false;
                        var imageView = new UIImageView(RastertizedImage(collectionViewCell));
                        imageView.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight;
                        imageView.Alpha = 0.0f;

                        CurrentView.AddSubview(imageView);
                        CurrentView.AddSubview(highlightedImageView);
                        DragSurface.AddSubview(CurrentView); // add this to the top level view so that we can drag outside
                        CurrentViewCenter = CurrentView.Center;

                        OnWillBeginDraggingItem(SelectedItemIndexPath);

                        // we animate the drawing out of the floating copy
                        UIView.Animate(0.3, 0.0, UIViewAnimationOptions.BeginFromCurrentState,
                            () =>
                            {
                                CurrentView.Transform = CGAffineTransform.MakeScale(1.1f, 1.1f);
                                highlightedImageView.Alpha = 0.0f;
                                imageView.Alpha = 1.0f;
                            },
                            () =>
                            {
                                highlightedImageView.RemoveFromSuperview();
                                OnDidBegingDraggingItem(SelectedItemIndexPath);
                            });
                        InvalidateLayout();
                    }
                    break;
                case UIGestureRecognizerState.Cancelled:
                case UIGestureRecognizerState.Ended:
                    {
                        var currentIndexPath = SelectedItemIndexPath;
                        if (currentIndexPath == null || CurrentView == null)
                            return;
                        SelectedItemIndexPath = null;
                        CurrentViewCenter = PointF.Empty;

                        OnWillEndDraggingItem(currentIndexPath);

                        UIView.Animate(0.3, 0.0, UIViewAnimationOptions.BeginFromCurrentState,
                            () =>
                            {
                                var layoutAttributes = this.LayoutAttributesForItem(currentIndexPath);
                                CurrentView.Transform = CGAffineTransform.MakeScale(1.0f, 1.0f);
                                CurrentView.Center = CollectionView.ConvertPointToView(layoutAttributes.Center, DragSurface);
                            },
                            () =>
                            {
                                CurrentView.RemoveFromSuperview();
                                CurrentView = null;
                                InvalidateLayout();

                                OnDidEndDraggingItem(currentIndexPath);
                            });

                    }
                    break;
            }
        }

		public void RemoveView(UIView view)
		{
			view.RemoveFromSuperview();
			
			if (this.Subviews.Length == 0)
			{
				this.Hidden = true;
				_previousKeyWindow.MakeKeyWindow();
				//_previousKeyWindow release];
				_previousKeyWindow = null;
			}
			else
			{
				UIView topView = this.Subviews.Last();
				if (topView is UIImageView)
				{
					// It's a background. Remove it too
					topView.RemoveFromSuperview();
				}

				this.Subviews.Last().UserInteractionEnabled = true;
			}
		}

 /// <summary>
 /// Removes the view.
 /// </summary>
 /// <param name="view">View.</param>
 void IMapControlHost.RemoveView(UIView view)
 {
     view.RemoveFromSuperview();
 }

		public override void ViewDidLoad ()
		{
			base.ViewDidLoad ();
	
			AnimateView animateView = new AnimateView();

			//TODO: more info at: http://www.youtube.com/watch?v=6JePwHjVj6U

			//MODAL PRESENTATION OF UIVIEW CONTROLLER--------------------------------------------------
			//PRESENTATION STLYE IS FORM SHEET
			btnTest.TouchUpInside += (object sender, EventArgs e) => 
			{
				AnimateModalViewController animateModalViewController = new AnimateModalViewController()
				{
					ModalTransitionStyle = UIModalTransitionStyle.CoverVertical,
					ModalPresentationStyle = UIModalPresentationStyle.FormSheet,
				};
				this.NavigationController.PresentViewController(animateModalViewController,true,null);
			};
			//-----------------------------------------------------------------------------------------

			//UIViewAnimation-----------------------------------------------------------------------------
			//RECTANGLE ANIMATION (GO LEFT AND RETURN TO STARTING POINT 
			PointF p0;
			UIView view = new UIView();
			view.Frame = new RectangleF(20,20,200,200);
			view.BackgroundColor = UIColor.Green;

			this.View.Add(view);
			btnCoreAnimation.TouchUpInside += (object sender, EventArgs e) => 
			{
				p0 = view.Center;

				UIView.Animate(2,0,
				               UIViewAnimationOptions.CurveEaseInOut | UIViewAnimationOptions.Autoreverse,
				               () => 
				               {
									view.Center = 
												new PointF(
															UIScreen.MainScreen.Bounds.Right - view.Frame.Width /2,
															view.Center.Y
															);
							   },
							   () => { view.Center = p0;}
								);

			};

			//UIView ANIMATION (FADE IN FROM THE CENTER OF THE SCREEN)---------------------------------------------
			PointF p1;
			UIView view1 = new UIView();
			view1.Frame = new RectangleF(this.View.Center.X,this.View.Center.Y,0,0);
			view1.BackgroundColor = UIColor.Gray;

			//DISMISS BUTTON FOR VIEW1
			UIButton btnDismissView1 = new UIButton(UIButtonType.RoundedRect);
			btnDismissView1.Frame = new RectangleF(318,687,133,44);
			btnDismissView1.Title(UIControlState.Normal);
			btnDismissView1.SetTitle("Dismiss View1",UIControlState.Normal);

			//DISMISS VIEW1
			btnDismissView1.TouchUpInside += (object sender, EventArgs e) => 
			{
				UIView.Animate(2,0,UIViewAnimationOptions.BeginFromCurrentState | UIViewAnimationOptions.CurveEaseIn,
				               () => 
				               {
									btnDismissView1.RemoveFromSuperview();
									view1.Frame = new RectangleF(this.View.Center.X,this.View.Center.Y,0,0);
								},
				() =>{view1.RemoveFromSuperview();}
				);

			};

			//ADD VIEW1 AS SUBVIEW TO this.View
			btnFadeInView.TouchUpInside += (object sender, EventArgs e) => 
			{
			
				this.View.Add(view1);

				p1 = view1.Center;

				UIView.Animate(2,0,UIViewAnimationOptions.BeginFromCurrentState | UIViewAnimationOptions.CurveEaseIn,
				               () => 
				               {
									view1.Frame = new RectangleF(0,0,768,960);
								},
								() => {view1.Add(btnDismissView1);}	//EMPTY, COULD BE USED FOR ACTION UPON COMPLETITION OF ANIMATION
								);
			};
			//---------------------------------------------------------------------------------------------


			//iOS built-in animations----------------------------------------------------------------------
			btnCrossDissolve.TouchUpInside += (object sender, EventArgs e) => 
			{
				this.NavigationController.PushControllerWithTransition(animateView, 
				                                                       UIViewAnimationOptions.TransitionCrossDissolve);
			};

//.........这里部分代码省略.........

		public void ButtonFinished (ButtonView button, UIView trackingView, UITouch location)
		{
			double delayInSeconds = 0;

			buttonDraggedToPad = false;
			miniPadView.Layer.BorderWidth = 0;

			CGPoint point = location.LocationInView (miniPadView);
			if (miniPadView.PointInside (point, null)) {
				updateScoreForDroppedButton (button);
				UIView.Animate (.1f, () => trackingView.Transform = CGAffineTransform.MakeRotation (10f * (float)Math.PI / 180), async () => {
					await UIView.AnimateAsync (.1f, () => trackingView.Transform = CGAffineTransform.MakeRotation (-10f * (float)Math.PI / 180));
					await UIView.AnimateAsync (.1f, () => trackingView.Transform = CGAffineTransform.MakeRotation (10f * (float)Math.PI / 180));
					await UIView.AnimateAsync (.1f, () => trackingView.Transform = CGAffineTransform.MakeRotation (-10f * (float)Math.PI / 180));
					await UIView.AnimateAsync (.1f, () => trackingView.Transform = CGAffineTransform.MakeRotation (0));
				});
			}

			delayInSeconds = 0.5;

			var popTime = new DispatchTime (DispatchTime.Now, (long)(delayInSeconds * NSEC_PER_SEC));
			DispatchQueue.MainQueue.DispatchAfter (popTime, async () => {
				await UIView.AnimateAsync (0.35f, () => {
					CGRect bounds = trackingView.Bounds;
					bounds.Size = new CGSize (10, 10);
					trackingView.Bounds = bounds;
				});
				trackingView.RemoveFromSuperview ();
			});
		}

        private void AddMsgToView(AppMsg appMsg)
        {
            UIApplication.SharedApplication.InvokeOnMainThread(() =>
                {
                    const int paddingh = 15;
                    const int paddingv = 8;
                    var size = new NSString (appMsg.Text).StringSize (UIFont.BoldSystemFontOfSize (14f), UIScreen.MainScreen.Bounds.Width - 80, UILineBreakMode.WordWrap);

                    var inner = new UILabel(
                        new CoreGraphics.CGRect(
                            (UIScreen.MainScreen.Bounds.Width-size.Width)/2,
            //							(UIScreen.MainScreen.Bounds.Bottom - size.Height) / 2,
                            (UIScreen.MainScreen.Bounds.Bottom - size.Height-80),
                            size.Width,
                            size.Height
                        )
                    )
                    {
                        Text = appMsg.Text,
                        Lines=0,
                        Font = UIFont.BoldSystemFontOfSize(14f),
                        TextColor = UIColor.White,
                        BackgroundColor=UIColor.FromWhiteAlpha(0,0),
                        TextAlignment = UITextAlignment.Center,
                        LineBreakMode=UILineBreakMode.WordWrap

                    };

                    inner.SizeToFit();

                    var rect=inner.Frame;
                    var outRect=new CGRect(rect.X-paddingh,rect.Y-paddingv,rect.Width+paddingh*2,rect.Height+paddingv*2);
                    var layout=new UIView(outRect){
                        BackgroundColor = UIColor.FromRGBA(0,0,0,0)
                    };
                    layout.Layer.CornerRadius=8;
                    layout.Layer.MasksToBounds=true;
                    layout.Layer.BorderWidth=0;
                    inner.Frame=new CGRect(paddingh,paddingv,rect.Width,rect.Height);
                    layout.AddSubview(inner);
                    UIApplication.SharedApplication.KeyWindow.AddSubview(layout);

                    UIView.AnimateAsync(0.2,()=>{
                        layout.BackgroundColor=UIColor.FromRGBA(0,0,0,200);
                    });

                    appMsg.State = MsgState.IsShowing;
                    Task.Delay(appMsg.Duration-700).ContinueWith(r => UIApplication.SharedApplication.InvokeOnMainThread(() =>
                        {
                            UIView.AnimateAsync(.5,()=>{
                                layout.BackgroundColor=layout.BackgroundColor.ColorWithAlpha(0);
                            }).ContinueWith(t=>{
                                InvokeOnMainThread (()=>{
                                    layout.Hidden=true;
                                    layout.RemoveFromSuperview();

                                });

                            });
                            appMsg.State = MsgState.Display;
                            if (msgQueue.Count == 0)
                            {
                                needGoon = false;
                            }
                            allDone.Set();
                        }));
                });
        }

		UIView BuildOptionsView ()
		{
			var screenWidth = UIScreen.MainScreen.Bounds.Width;

			var alert = new UIView(new RectangleF(AlertMarginX, AlertY, screenWidth - 2*AlertMarginX, AlertHeight));
			alert.BackgroundColor = UIColor.White;
			var title = new UILabel(new RectangleF(AlertPaddingX, AlertPaddingY, alert.Bounds.Width - 2*AlertPaddingX, 40));
			title.Text = "Options";
			alert.AddSubview(title);

			var atmsCheckbox = BuildCheckboxOption (alert, "ATMs", 60);
			var branchesCheckbox = BuildCheckboxOption (alert, "Branches", 100);
			var partnerCheckbox = BuildCheckboxOption (alert, "Patner ATMs", 140);

			atmsCheckbox.Selected = MapOptions.SelectOwnAtms;
			branchesCheckbox.Selected = MapOptions.SelectOwnBranches;
			partnerCheckbox.Selected = MapOptions.SelectPartnerAtms;

			var okButton = new UIButton (UIButtonType.RoundedRect) {
				Frame = new RectangleF(AlertPaddingX, AlertHeight - AlertPaddingY - 44, alert.Bounds.Width - 2*AlertPaddingX, 44),
			};
			okButton.SetTitle ("OK", UIControlState.Normal);
			okButton.TouchUpInside += (object sender, EventArgs e) => {
				MapOptions = new Options(atmsCheckbox.Selected, branchesCheckbox.Selected, partnerCheckbox.Selected);
				alert.RemoveFromSuperview();
				FetchAndUpdate();
			};
			alert.AddSubview (okButton);

			return alert;
		}

 public void ToastAnimationDidStop(string animationID,bool finished,UIView toast)
 {
     if (animationID.Equals("fade_in"))
     {
         UIView.BeginAnimations("fade_out",toast.Handle);
         UIView.SetAnimationDelay(interval);
         UIView.SetAnimationDuration(kFadeDuration);
         UIView.SetAnimationDelegate(this);
         UIView.SetAnimationDidStopSelector(new Selector("toastAnimationDidStop:finished:context:"));
         UIView.SetAnimationCurve(UIViewAnimationCurve.EaseIn);
         toast.Alpha=0.0f;
         UIView.CommitAnimations();
     }
     else if (animationID.Equals("fade_out"))
     {
         toast.RemoveFromSuperview();
     }
 }