private async void LoginButtonClicked() { if (IsLoggedIn) { _service.Logout(); CurtainPrompt.Show("AuthLogoutSuccess".FromLanguageResource()); LastFmUsername = null; LastFmPassword = null; IsLoggedIn = false; Scrobble = false; Insights.Track("Logged out from Last.FM"); } else { if (string.IsNullOrEmpty(LastFmUsername) || string.IsNullOrEmpty(LastFmPassword)) { CurtainPrompt.ShowError("AuthLoginErrorForgot".FromLanguageResource()); } else { UiBlockerUtility.Block("GenericWait".FromLanguageResource()); if (await _service.AuthenticaAsync(LastFmUsername, LastFmPassword)) { CurtainPrompt.Show("AuthLoginSuccess".FromLanguageResource()); IsLoggedIn = true; Scrobble = true; Insights.Track("Logged in Last.FM"); } else { CurtainPrompt.ShowError("AuthLoginError".FromLanguageResource()); } UiBlockerUtility.Unblock(); } // update the player also var msg = new ValueSet { { PlayerConstants.LastFmLoginChanged, string.Empty } }; BackgroundMediaPlayer.SendMessageToBackground(msg); } }