private async void HandleSaveSettingsCommand()
        {
            IsLoading = true;
            var settings = new PhotoFrameSettings(Address, UserName, Password);

            settings.UseHttps      = UseHttps;
            settings.UseSmartAlbum = UseSmartAlbum;
            if (UseSmartAlbum)
            {
                var album = SelectedSmartAlbum as Smart_Album;
                settings.AlbumName = album?.name;
                settings.AlbumId   = album?.id;
            }
            else
            {
                var album = SelectedAlbum as AlbumItem;
                settings.AlbumName = album?.info?.name;
                settings.AlbumId   = album?.id;
            }

            await settingsHelper.SaveAsync(settings);

            IsLoading = false;
            navigationService.GoBack();
        }