Xamarin.Forms页面从下到上的动画

using Xamarin.Forms;

public class MainPage : ContentPage
{
    public MainPage()
    {
        Button button = new Button
        {
            Text = "Go to Second Page",
            Command = new Command(async () =>
            {
                // 创建动画效果
                await this.FadeTo(0, 500);
                
                // 导航到第二个页面
                await Navigation.PushAsync(new SecondPage());

                // 创建动画效果
                await this.FadeTo(1, 500);
            })
        };

        Content = new StackLayout
        {
            Children = { button }
        };
    }
}

public class SecondPage : ContentPage
{
    public SecondPage()
    {
        Button button = new Button
        {
            Text = "Go back",
            Command = new Command(async () =>
            {
                // 创建动画效果
                await this.FadeTo(0, 500);

                // 返回到上一个页面
                await Navigation.PopAsync();

                // 创建动画效果
                await this.FadeTo(1, 500);
            })
        };

        Content = new StackLayout
        {
            Children = { button }
        };
    }
}

public class App : Application
{
    public App()
    {
        MainPage = new NavigationPage(new MainPage());
    }
}