C# 更改页面和显示模式时Android上的Webview显示问题（纵向->；横向）

当我尝试在

webView

中以横向模式（）显示我的一个网页时，它可以在Android上正常工作

但是当它不是第一个页面，我在页面之间改变方向时，它在Android上就不能正常工作了（显示问题）

MainPage.xaml.cs

    public partial class MainPage : ContentPage
    {
        private List<Anim> lesAnimations;
        public MainPage()
        {
            InitializeComponent();

            String animsJson = "[{\"Nom\":\"Réfraction et réfexion\",\"url\":\"https://web-labosims.org/animations/App_refraction_reflexion/App_refraction&reflexion.html\",\"imageUrl\":\"App_refraction.png\"},{\"Nom\":\"Synthèse soustractive\",\"url\":\"https://web-labosims.org/animations/App_lumiere3/App_lumiere3.html\",\"imageUrl\":\"App_soustractive.png\"}]";

            lesAnimations = JsonConvert.DeserializeObject<List<Anim>>(animsJson);

            maListView.ItemsSource = lesAnimations;

            maListView.ItemSelected += (sender, e) =>
            {
                if (maListView.SelectedItem != null)
                {
                    Anim item = maListView.SelectedItem as Anim;

                    GoAnimation(item.url);
                }
                maListView.SelectedItem = null;
            };

        }

        private async Task GoAnimation(String url)
        {
            await this.Navigation.PushAsync(new Animation(url));
        }

        protected override void OnAppearing()
        {
            base.OnAppearing();
            DependencyService.Get<IOrientationHandler>().ForcePortrait();
        }

        protected override void OnDisappearing()
        {
            base.OnDisappearing();
            DependencyService.Get<IOrientationHandler>().ForceLandscape();
        }

    }

IOrientationHandler.cs

namespace LaboSims
{
    public interface IOrientationHandler
    {
        void ForceLandscape();
        void ForcePortrait();
    }
}

在安卓系统上

using Android.Content.PM;
using LaboSims.Droid;
using Plugin.CurrentActivity;

[assembly: Xamarin.Forms.Dependency(typeof(OrientationHandler))]
namespace LaboSims.Droid
{
    public class OrientationHandler : IOrientationHandler
    {
        public void ForceLandscape()
        {
            CrossCurrentActivity.Current.Activity.RequestedOrientation = ScreenOrientation.Landscape;
        }

        public void ForcePortrait()
        {
            CrossCurrentActivity.Current.Activity.RequestedOrientation = ScreenOrientation.Portrait;
        }
    }
}

---

我不明白我在哪里出错…

我确信问题应该很简单，事实上这是一个简单的错误。。。我在我的网页上的元标记中犯了一个小错误。 我把它改成：

<meta name="viewport" content="user-scalable=no, width=device-width, initial-scale=1, maximum-scale=1">

---

而且一切正常

您能否在github提供一个样本，我将加载您的样本进行测试。我看到有listview，但是你没有发布相关代码。谢谢你的帮助，我最终发现了问题，它来自我网页的meta标签

using Android.Content.PM;
using LaboSims.Droid;
using Plugin.CurrentActivity;

[assembly: Xamarin.Forms.Dependency(typeof(OrientationHandler))]
namespace LaboSims.Droid
{
    public class OrientationHandler : IOrientationHandler
    {
        public void ForceLandscape()
        {
            CrossCurrentActivity.Current.Activity.RequestedOrientation = ScreenOrientation.Landscape;
        }

        public void ForcePortrait()
        {
            CrossCurrentActivity.Current.Activity.RequestedOrientation = ScreenOrientation.Portrait;
        }
    }
}

<meta name="viewport" content="user-scalable=no, width=device-width, initial-scale=1, maximum-scale=1">