iOS的Xamarin.Forms ListView ItemTapped背景

<!-- XAML -->
<ListView x:Name="listView" ItemTapped="OnItemTapped">
    <ListView.ItemTemplate>
        <DataTemplate>
            <ViewCell>
                <StackLayout Padding="10" BackgroundColor="{Binding ItemBackgroundColor}">
                    <Label Text="{Binding Title}" FontSize="16" />
                </StackLayout>
            </ViewCell>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

// C# 后台代码
public partial class MainPage : ContentPage
{
    public ObservableCollection<Item> Items { get; set; }

    public MainPage()
    {
        InitializeComponent();

        Items = new ObservableCollection<Item>
        {
            new Item { Title = "Item 1" },
            new Item { Title = "Item 2" },
            // 添加更多项...
        };

        listView.ItemsSource = Items;
    }

    private void OnItemTapped(object sender, ItemTappedEventArgs e)
    {
        if (e.Item is Item item)
        {
            // 重置所有项的背景颜色
            foreach (var i in Items)
                i.ItemBackgroundColor = Color.White;

            // 设置被点击项的背景颜色
            item.ItemBackgroundColor = Color.LightBlue;

            // 取消选中状态
            ((ListView)sender).SelectedItem = null;
        }
    }
}

public class Item
{
    public string Title { get; set; }
    public Color ItemBackgroundColor { get; set; } = Color.White;
}