交替项目背景Xamarin.Forms ListView中的颜色

// 创建自定义的视图模板
var itemTemplate = new DataTemplate(() =>
{
    var viewCell = new ViewCell();
    var label = new Label();
    label.SetBinding(Label.TextProperty, "ItemName");
    viewCell.View = label;
    return viewCell;
});

// 创建 ListView
var listView = new ListView();
listView.ItemTemplate = itemTemplate;

// 设置交替项目背景颜色
listView.ItemSelected += (sender, e) =>
{
    var selectedItem = (MyItem)e.SelectedItem;
    selectedItem.IsSelected = !selectedItem.IsSelected;
};

// 创建数据源
var items = new List<MyItem>
{
    new MyItem { ItemName = "Item 1", IsSelected = false },
    new MyItem { ItemName = "Item 2", IsSelected = true },
    new MyItem { ItemName = "Item 3", IsSelected = false },
    new MyItem { ItemName = "Item 4", IsSelected = true },
    // ...
};

// 设置数据源
listView.ItemsSource = items;

// 添加 ListView 到页面中
Content = new StackLayout
{
    Children = { listView }
};