AVCamManual.AVCamManualCameraViewController.ViewWillAppear C# (CSharp) Метод

		public override void ViewWillAppear (bool animated)
		{
			base.ViewWillAppear (animated);

			sessionQueue.DispatchAsync (() => {
				switch (setupResult) {
				// Only setup observers and start the session running if setup succeeded
				case SetupResult.Success:
					AddObservers ();
					Session.StartRunning ();
					sessionRunning = Session.Running;
					break;

				case SetupResult.CameraNotAuthorized:
					DispatchQueue.MainQueue.DispatchAsync (() => {
						string message = "AVCamManual doesn't have permission to use the camera, please change privacy settings";
						UIAlertController alertController = UIAlertController.Create ("AVCamManual", message, UIAlertControllerStyle.Alert);
						UIAlertAction cancelAction = UIAlertAction.Create ("OK", UIAlertActionStyle.Cancel, null);
						alertController.AddAction (cancelAction);
						// Provide quick access to Settings
						UIAlertAction settingsAction = UIAlertAction.Create ("Settings", UIAlertActionStyle.Default, action => {
							UIApplication.SharedApplication.OpenUrl (NSUrl.FromString (UIApplication.OpenSettingsUrlString), new UIApplicationOpenUrlOptions (), null);
						});
						alertController.AddAction (settingsAction);
						PresentViewController (alertController, true, null);
					});
					break;
				case SetupResult.SessionConfigurationFailed:
					DispatchQueue.MainQueue.DispatchAsync (() => {
						string message = "Unable to capture media";
						UIAlertController alertController = UIAlertController.Create ("AVCamManual", message, UIAlertControllerStyle.Alert);
						UIAlertAction cancelAction = UIAlertAction.Create ("OK", UIAlertActionStyle.Cancel, null);
						alertController.AddAction (cancelAction);
						PresentViewController (alertController, true, null);
					});
					break;
				}
			});
		}