protected override async void OnAppearing()
        {
            items = await domoticzManager.GetDeviceList("utility");

            var lstView = new ListView();

            lstView.RowHeight           = 60;
            this.Title                  = "System";
            lstView.ItemTemplate        = new DataTemplate(typeof(CustomSystemCell));
            lstView.GroupHeaderTemplate = new DataTemplate(typeof(CustomSystemGroupedCell));

            if (items.result.Count > 0)
            {
                var grouped = new ObservableCollection <DomoticzDeviceType>();

                var rdc = new DomoticzDeviceType()
                {
                    Title = "Raspberry", ShortName = "Pi3"
                };
                var etage = new DomoticzDeviceType()
                {
                    Title = "Freebox", ShortName = "Fbx"
                };

                foreach (var item in items.result)
                {
                    if (item.HardwareName.Equals("BibRaspberry"))
                    {
                        rdc.Add(item);
                    }
                    else if (item.HardwareName.Equals("Freebox Server"))
                    {
                        etage.Add(item);
                    }
                }
                ;

                grouped.Add(rdc);
                grouped.Add(etage);

                lstView.ItemsSource         = grouped;
                lstView.IsGroupingEnabled   = true;
                lstView.GroupDisplayBinding = new Binding("Title");
                lstView.ItemTemplate.SetBinding(TextCell.TextProperty, "Name");
                lstView.IsPullToRefreshEnabled = true;

                lstView.ItemSelected          += OnItemSelected;
                lstView.IsPullToRefreshEnabled = true;
                lstView.Refreshing            += OnItemRefresh;
                Content = lstView;
            }
        }
        protected override async void OnAppearing()
        {
            items = await domoticzManager.GetDeviceList("light");

            var lstView = new ListView();

            lstView.RowHeight           = 60;
            this.Title                  = "SecurityElement";
            lstView.ItemTemplate        = new DataTemplate(typeof(CustomSecurityElementsCell));
            lstView.GroupHeaderTemplate = new DataTemplate(typeof(CustomSecurityElementsGroupedCell));

            if (items.result.Count > 0)
            {
                var grouped = new ObservableCollection <DomoticzDeviceType>();

                var doorSensor = new DomoticzDeviceType()
                {
                    Title = "Door Sensor", ShortName = "DS"
                };
                var motionSensor = new DomoticzDeviceType()
                {
                    Title = "Motion Sensor", ShortName = "MS"
                };
                var smokeSensor = new DomoticzDeviceType()
                {
                    Title = "Smoke Sensor", ShortName = "SS"
                };
                var floodSensor = new DomoticzDeviceType()
                {
                    Title = "Flood Sensor", ShortName = "FS"
                };

                foreach (var item in items.result)
                {
                    if (item.SwitchType != null && item.Image != null)
                    {
                        if (item.SwitchType.Equals("Door Lock"))
                        {
                            doorSensor.Add(item);
                        }
                        else if (item.Image.Equals("Water"))
                        {
                            floodSensor.Add(item);
                        }
                        else if (item.SwitchType.Equals("Motion Sensor"))
                        {
                            motionSensor.Add(item);
                        }
                        else if (item.SwitchType.Equals("Smoke Detector"))
                        {
                            smokeSensor.Add(item);
                        }
                    }
                }
                ;

                grouped.Add(doorSensor);
                grouped.Add(motionSensor);
                grouped.Add(smokeSensor);
                grouped.Add(floodSensor);

                lstView.ItemsSource         = grouped;
                lstView.IsGroupingEnabled   = true;
                lstView.GroupDisplayBinding = new Binding("Title");
                lstView.ItemTemplate.SetBinding(TextCell.TextProperty, "Name");
                lstView.IsPullToRefreshEnabled = true;

                lstView.ItemSelected          += OnItemSelected;
                lstView.IsPullToRefreshEnabled = true;
                lstView.Refreshing            += OnItemRefresh;
                Content = lstView;
            }
        }