private void LoginCanceled(object sender, EventArgs e) { // Remove the login UI. _loginUI.Hide(); _loginUI = null; // Cancel the task completion source task. _loginTaskCompletionSource.TrySetCanceled(); }
private void ShowLoginUI() { // Get the URL for the service being requested. var info = _loginTaskCompletionSource.Task.AsyncState as CredentialRequestInfo; var serviceUrl = info.ServiceUri.GetLeftPart(UriPartial.Path); // Create a view to show login controls over the map view. var ovBounds = new CoreGraphics.CGRect(0, 80, _myMapView.Bounds.Width, _myMapView.Bounds.Height - 80); _loginUI = new LoginOverlay(ovBounds, 0.85f, UIColor.DarkGray, serviceUrl); // Handle the login event to get the login entered by the user. _loginUI.OnLoginInfoEntered += LoginEntered; // Handle the cancel event when the user closes the dialog without entering a login. _loginUI.OnCanceled += LoginCanceled; // Add the login UI view (will display semi-transparent over the map view) View.Add(_loginUI); }
// Handle the OnLoginEntered event from the login UI. // LoginEventArgs contains the username and password that were entered. private async void LoginEntered(object sender, LoginEventArgs e) { // Make sure the task completion source has all the information needed. if (_loginTaskCompletionSource == null || _loginTaskCompletionSource.Task == null || _loginTaskCompletionSource.Task.AsyncState == null) { return; } try { // Get the associated CredentialRequestInfo (will need the URI of the service being accessed). CredentialRequestInfo requestInfo = _loginTaskCompletionSource.Task.AsyncState as CredentialRequestInfo; // Create a token credential using the provided username and password. TokenCredential userCredentials = await AuthenticationManager.Current.GenerateCredentialAsync (requestInfo.ServiceUri, e.Username, e.Password, requestInfo.GenerateTokenOptions); // Set the result on the task completion source. _loginTaskCompletionSource.TrySetResult(userCredentials); } catch (Exception ex) { // Unable to create credential, set the exception on the task completion source. _loginTaskCompletionSource.TrySetException(ex); } finally { // Get rid of the login controls. _loginUI.Hide(); _loginUI = null; } }