C# UIInterfaceOrientation类代码示例

		public UIPageViewControllerSpineLocation GetSpineLocation (UIPageViewController pageViewController, UIInterfaceOrientation orientation)
		{
			if (orientation == UIInterfaceOrientation.Portrait || UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Phone) {
				UIViewController currentViewController = pageViewController.ViewControllers [0];
				pageViewController.SetViewControllers (
					new [] { currentViewController },
					UIPageViewControllerNavigationDirection.Forward,
					true, null
				);

				pageViewController.DoubleSided = false;
				return UIPageViewControllerSpineLocation.Min;
			}

			var dataViewController = (DataViewController)pageViewController.ViewControllers [0];
			var indexOfCurrentViewController = modelController.IndexOfViewController (dataViewController);
			UIViewController[] viewControllers = null;

			if (indexOfCurrentViewController == 0 || indexOfCurrentViewController % 2 == 0) {
				UIViewController nextViewController = modelController.GetNextViewController (pageViewController, dataViewController);
				viewControllers = new [] { dataViewController, nextViewController };
			} else {
				UIViewController previousViewController = modelController.GetPreviousViewController (pageViewController, dataViewController);
				viewControllers = new[] { dataViewController, previousViewController };
			}

			pageViewController.SetViewControllers (viewControllers, UIPageViewControllerNavigationDirection.Forward, true, null);
			return UIPageViewControllerSpineLocation.Mid;
		}

		/// <summary>
		/// is called when the OS is going to rotate the application. It handles rotating the status bar
		/// if it's present, as well as it's controls like the navigation controller and tab bar, but you 
		/// must handle the rotation of your view and associated subviews. This call is wrapped in an 
		/// animation block in the underlying implementation, so it will automatically animate your control
		/// repositioning.
		/// </summary>
		public override void WillAnimateRotation (UIInterfaceOrientation toInterfaceOrientation, double duration)
		{
			base.WillAnimateRotation (toInterfaceOrientation, duration);
			
			// call our helper method to position the controls
			PositionControls (toInterfaceOrientation);
		}

        public override bool ShouldAutorotateToInterfaceOrientation(UIInterfaceOrientation toInterfaceOrientation)
        {
            var f = this.View.Frame;

            _player.View.Frame = new Rectangle(0,0,(int)f.Height,(int)f.Width);
            return true;
        }

        public UIPageViewControllerSpineLocation GetSpineLocation(UIPageViewController pageViewController, UIInterfaceOrientation orientation)
        {
            UIViewController currentViewController;
            UIViewController[] viewControllers;

            if (orientation == UIInterfaceOrientation.Portrait || orientation == UIInterfaceOrientation.PortraitUpsideDown || UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Phone) {
                // In portrait orientation or on iPhone: Set the spine position to "min" and the page view controller's view controllers array to contain just one view controller.
                // Setting the spine position to 'UIPageViewControllerSpineLocation.Mid' in landscape orientation sets the doubleSided property to true, so set it to false here.
                currentViewController = pageViewController.ViewControllers [0];
                viewControllers = new [] { currentViewController };
                pageViewController.SetViewControllers (viewControllers, UIPageViewControllerNavigationDirection.Forward, true, null);

                pageViewController.DoubleSided = false;

                return UIPageViewControllerSpineLocation.Min;
            }

            // In landscape orientation: Set set the spine location to "mid" and the page view controller's view controllers array to contain two view controllers.
            // If the current page is even, set it to contain the current and next view controllers; if it is odd, set the array to contain the previous and current view controllers.
            currentViewController = pageViewController.ViewControllers [0];

            int index = ModelController.IndexOf ((DataViewController)currentViewController);
            if (index == 0 || index % 2 == 0) {
                var nextViewController = ModelController.GetNextViewController (pageViewController, currentViewController);
                viewControllers = new [] { currentViewController, nextViewController };
            } else {
                var previousViewController = ModelController.GetPreviousViewController (pageViewController, currentViewController);
                viewControllers = new [] { previousViewController, currentViewController };
            }

            pageViewController.SetViewControllers (viewControllers, UIPageViewControllerNavigationDirection.Forward, true, null);

            return UIPageViewControllerSpineLocation.Mid;
        }

 public override void DidRotate(UIInterfaceOrientation fromInterfaceOrientation)
 {
     base.DidRotate (fromInterfaceOrientation);
     if (aboutScreenView != null) {
         aboutScreenView.Rotate ();
     }
 }

		public override void DidRotate(UIInterfaceOrientation fromInterfaceOrientation)
		{
			if (ViewModel is BaseViewModel)
			{
				((BaseViewModel)ViewModel).WaitForReady(() => InvokeOnMainThread(ViewModelReady));
			}
		}

        public override void DidRotate(UIInterfaceOrientation fromInterfaceOrientation)
        {
            base.DidRotate (fromInterfaceOrientation);

            WebView.Frame = new RectangleF (0f * Device.screenWidthP, 0f * Device.screenHeightP, 100f * Device.screenWidthP, 100f * Device.screenHeightP);
            WebView.Reload ();
        }

 public override void DidRotate(UIInterfaceOrientation orientation)
 {
     base.DidRotate(orientation);
     View.SetNeedsDisplay();
     Console.WriteLine("Hypnosis View did rotate - frame" + View.Frame.ToString());
     Console.WriteLine("Hypnosis View did rotate - bounds" + View.Frame.ToString());
 }

 public void UpdatePreviewRotation(UIInterfaceOrientation orientation)
 {
     //Re-size camera feed based on orientation
     if (previewLayer == null) return;
     previewLayer.Connection.VideoOrientation = configDicByRotationChanged[orientation];
     previewLayer.Frame = rootView.Bounds;
 }

 public ExEnEmTouchScaler(UIInterfaceOrientation orientation, Point renderbufferSize, Point deviceSize)
 {
     this.orientation = orientation;
     this.renderbufferSize = renderbufferSize;
     this.deviceSize = deviceSize;
     Recalculate();
 }

 public override System.Drawing.SizeF SizeForItemsInInterfaceOrientation(GMGridView.GMGridView gridView, UIInterfaceOrientation orientation)
 {
     SizeF size;
     //Console.WriteLine("SizeForItemsInInterfaceOrientation");
     if (MainViewController.UserInterfaceIdiomIsPhone) {
         if (orientation == UIInterfaceOrientation.LandscapeLeft || orientation == UIInterfaceOrientation.LandscapeRight)
         {
             size = new SizeF(170.0f, 135.0f);
         }
         else
         {
             size = new SizeF(140f, 110f);
         }
     }
     else
     {
         if (orientation == UIInterfaceOrientation.LandscapeLeft || orientation == UIInterfaceOrientation.LandscapeRight)
         {
             size = new SizeF(285.0f, 205.0f);
         }
         else
         {
             size = new SizeF(230.0f, 175.0f);
         }
     }
     Console.WriteLine("Size: {0}; {1}", size.Width, size.Height);
     return size;
 }

        public override void DidRotate(UIInterfaceOrientation fromInterfaceOrientation)
        {
            base.DidRotate(fromInterfaceOrientation);

            UpdateGUI();
            UpdateTableView();
        }

		public override void DidRotate (UIInterfaceOrientation fromInterfaceOrientation)
		{
			base.DidRotate (fromInterfaceOrientation);

			// update the camera orientation
			stillCamera.OutputImageOrientation = InterfaceOrientation;
		}

 public override void DidRotate(UIInterfaceOrientation fromInterfaceOrientation)
 {
     base.DidRotate (fromInterfaceOrientation);
     foreach (var x in TableView.VisibleCells) {
         ((ContactListScreenCell)x).Rotate ();
     }
 }

		/// <summary>
		/// A helper method to position the controls appropriately, based on the 
		/// orientation
		/// </summary>
		protected void PositionControls (UIInterfaceOrientation toInterfaceOrientation)
		{
			// depending one what orientation we start in, we want to position our controls
			// appropriately
			switch (toInterfaceOrientation) {
				// if we're switching to landscape
				case UIInterfaceOrientation.LandscapeLeft:
				case UIInterfaceOrientation.LandscapeRight:
					
					// reposition the buttons
					button1.Frame = new System.Drawing.RectangleF (10, 10, 100, 33);
					button2.Frame = new System.Drawing.RectangleF (10, 200, 100, 33);
					
					// reposition the image
					image.Frame = new System.Drawing.RectangleF (240, 25, image.Frame.Width, image.Frame.Height);
					
					break;
				
				// we're switching back to portrait
				case UIInterfaceOrientation.Portrait:
				case UIInterfaceOrientation.PortraitUpsideDown:
					
					// reposition the buttons
					button1.Frame = new System.Drawing.RectangleF (10, 10, 100, 33);
					button2.Frame = new System.Drawing.RectangleF (200, 10, 100, 33);
					
					// reposition the image
					image.Frame = new System.Drawing.RectangleF (20, 150, this.image.Frame.Width, this.image.Frame.Height);
					
					break;
			}
		}