private async Task LoadAlerts()
        {
            try
            {
                int otbId = int.Parse(Application.Current.Properties["Otb_ID"].ToString());
                if (Connectivity.NetworkAccess == NetworkAccess.Internet)
                {
                    ResponseHTTP <AlertModel> responseHTTP = await alertService.listarAlertas(otbId);

                    if (responseHTTP.Code == System.Net.HttpStatusCode.OK)
                    {
                        listActivity = responseHTTP.Data;
                        await App.SQLiteDB.SaveAlertAsync(listActivity);
                    }
                    else
                    {
                        DependencyService.Get <IMessage>().LongAlert(responseHTTP.Msj);
                    }
                }
                else
                {
                    listActivity = await App.SQLiteDB.GetAlertAsync();
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
        // Metodo que carga la data de actividades de usuarios
        public async void LoadData()
        {
            try
            {
                ResponseHTTP <AlertModel> response = await alertService.listarAlertas(int.Parse(Application.Current.Properties["Otb_ID"].ToString()));

                if (response.Code == System.Net.HttpStatusCode.OK)
                {
                    listaAlertas = response.Data;
                }
                else
                {
                    DependencyService.Get <IMessage>().LongAlert(response.Msj);
                }
            }
            catch (Exception ex)
            {
                DependencyService.Get <IMessage>().LongAlert(ex.Message);
            }
        }