public void IdsAvailable(string oneSignalUserId, string registrationId) { var user = App.CurrentUserEnvironment.User; var idUser = user.IdUser.ToString(); var credentials = string.Format("{0}/{1}/{2}", user.LastName, user.FirstName, user.Email); //Sync email OneSignal.SyncHashedEmail(user.Email); //Create user tags OneSignal.GetTags(new GetTagsHandler(idUser, credentials)); //Silent notification OneSignal.SetInFocusDisplaying(OneSignal.OSInFocusDisplayOption.None); }