xamarin自动调整webview高度

Question

如何配置Xamarin Webview根据html内容显示自动高度？ 我正在Xamarin开发一个新闻应用程序，我有这个问题，因为webview强制我通知高度和宽度来显示信息，因为我的内容是动态的，（总是更改）最终成为屏幕上的空白区域！

对不起英文，我用google翻译！

谢谢！

代码：PostView.cs

namespace AppNewsPlay.Views
{


    public partial class PostView : TabbedPage
    {
        private int object_id;

        // Criando a Listagem de Ultimas Noticias Playstation
        List<PostViewModels> UPost; 

        public TabbedPage Detail { get; private set; }


        public PostView(int object_id)
        {

            this.object_id = object_id;
            UPost = new List<PostViewModels>();
            ObterPost();

            InitializeComponent();       


        }



        private async void ObterPost()
        {
            var resp = string.Empty;

            try
            {
                var uri = new HttpClient()
                {
                    BaseAddress = new Uri("http://api.newsplay.com.br")
                };
                var url = "/api/post/" + this.object_id;
                var result = await uri.GetAsync(url);


                if (!result.IsSuccessStatusCode)
                {
                    await DisplayAlert("Erro de Conexão", "Não foi possível obter as notícias do servidor, Tente novamente mais tarde!", "OK");
                    return;
                }

                resp = await result.Content.ReadAsStringAsync();


            }
            catch (Exception ex)
            {
                await DisplayAlert("Erro de Conexão com o Servidor", ex.Message, "OK");
                return;

            }

            // transformando o retorno em objeto através do json e deserealize e retornando em lista
            var UPost = JsonConvert.DeserializeObject<List<PostViewModels>>(resp);

            var browser = new WebView();


          // var htmlsource = new UrlWebViewSource();

            foreach (var item in UPost)
            {
            var  html = item.Guid;
                browser.Source = html;

            }


            //   Adicionando os itens ao ListView na Home.xaml - Aba Playstation*/
            PostViewList.ItemsSource = UPost;
            //     ProgressLoader.IsRunning = false;



        }

代码：PostView.xaml

<TabbedPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="AppNewsPlay.Views.PostView"
             Title="Voltar"
             Icon=""
             BarBackgroundColor="#1c9e33"
            >

    <TabbedPage.Children>
        <ContentPage Title="Notícia" Icon="ic_filter_list_black_24dp.png">

            <ContentPage.Content >
                <StackLayout
                        Spacing="20">      

                    <ListView x:Name="PostViewList"
                                HasUnevenRows="True"      
                                SeparatorColor="White"
                                SeparatorVisibility="Default"                                                                  
                                >

                        <ListView.ItemTemplate>
                            <DataTemplate>
                                <ViewCell>
                                    <StackLayout
                                               Padding="20"                                
                                               Orientation="Vertical"                                        
                                               >                                       

                                        <Label x:Name="Post_title" Text="{ Binding Post_title }"
                                                 FontSize="20"
                                                 FontAttributes="Bold"  
                                                 HorizontalTextAlignment="Center"
                                                 />

                                        <Label x:Name="Post_ad" Text="{Binding Post_ad}"
                                                       FontSize="12"                                            
                                                       HorizontalTextAlignment="Center"   
                                                       />


                                        <WebView HorizontalOptions= "FillAndExpand"
                                                 VerticalOptions="FillAndExpand"
                                                 HeightRequest="3500" 
                                                 WidthRequest="650"
                                                 x:Name="browser"
                                                 Source="{Binding Guid}"                                            

                                             >


                                        </WebView>
                                    </StackLayout>

                                </ViewCell>
                            </DataTemplate>
                        </ListView.ItemTemplate>
                    </ListView>
                </StackLayout>
            </ContentPage.Content>
        </ContentPage>


    </TabbedPage.Children>
</TabbedPage>