如何在Xamarin.Forms中为TabbedPage布局中的不同页面设置不同的标题视图？

public class CustomTabbedPage : TabbedPage
{
    public CustomTabbedPage()
    {
        // 创建页面并设置标题视图
        var page1 = new Page1();
        var navigationPage1 = new CustomNavigationPage(page1)
        {
            TitleView = new Label { Text = "Page 1 Title" }
        };

        var page2 = new Page2();
        var navigationPage2 = new CustomNavigationPage(page2)
        {
            TitleView = new Label { Text = "Page 2 Title" }
        };

        // 将页面添加到TabbedPage中
        Children.Add(navigationPage1);
        Children.Add(navigationPage2);
    }
}

public class CustomNavigationPage : NavigationPage
{
    public CustomNavigationPage(Page root) : base(root)
    {
        // 设置导航栏样式
        BarBackgroundColor = Color.Blue;
        BarTextColor = Color.White;
    }
}