Xamarin Forms WebView错误

Question

in my application I should insert a Markdown render. 在我的应用程序中，我应该插入Markdown渲染器。 I found this component http://thatcsharpguy.com/post/markdownview-xamarin-forms-control/ and the render is working fine but I have a problem with the WebView . 我发现该组件http://thatcsharpguy.com/post/markdownview-xamarin-forms-control/且渲染正常，但WebView出现问题。 If I pass to a WebView something, it always goes in error and the error is: 如果我将某些内容传递给WebView，它将始终出错并且错误是：

Object reference not set to an instance of an object 你调用的对象是空的

Page1.xaml Page1.xaml

 <xml version="1.0" encoding="utf-8" ?>
 <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
          xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
          x:Class="WBE.Views.Page1">
     <ContentPage.Content>
       <StackLayout>
         <WebView x:Name="Browser" VerticalOptions="FillAndExpand">
         </WebView>
       </StackLayout>
     </ContentPage.Content>
 </ContentPage>

Page1.xaml.cs Page1.xaml.cs

public Page1()
{
    InitializeComponent();

    var htmlSource = new HtmlWebViewSource();
    htmlSource.Html = @"<html><body>
                        <h1>Xamarin.Forms</h1>
                        <p>Welcome to WebView.</p>
                        </body></html>";
    htmlSource.BaseUrl = DependencyService.Get<IBaseUrl>().Get();

    this.Browser.Source = htmlSource;
}

I created my interface 我创建了我的界面

 public interface IBaseUrl {
     string Get();
 }

and its implementations for each platform 及其每个平台的实现

Droid 机器人

[assembly: Xamarin.Forms.Dependency(typeof(IBaseUrl))]
namespace WBE.Android
{
    public class BaseUrl_Android : IBaseUrl
    {
        public string Get()
        {
            return "file:///android_asset/";
        }
    }
}

iOS 的iOS

[assembly: Xamarin.Forms.Dependency(typeof(IBaseUrl))]
namespace WBE.iOS
{
    public class BaseUrl_iOS : IBaseUrl
    {
        public string Get()
        {
            return NSBundle.MainBundle.BundlePath;
        }
    }
}

UWP 超人

[assembly: Dependency(typeof(BaseUrl_UWP))]
namespace WBE.UWP.Dependecies
{
    public class BaseUrl_UWP : IBaseUrl
    {
        public string Get()
        {
            return "ms-appx-web:///";
        }
    }
}

What is wrong? 怎么了？ Thank you in advance for your help. 预先感谢您的帮助。

Answer 1

thanks for your email. 谢谢你的电邮。 At the end I understood what the problem was. 最后，我了解了问题所在。 The error came from the Markdown component. 该错误来自Markdown组件。

Xamarin Forms WebView错误

问题描述

1 个解决方案

解决方案1
0 2016-11-23 00:36:26

Xamarin Forms WebView错误

问题描述

1 个解决方案

解决方案1 0 2016-11-23 00:36:26

解决方案1
0 2016-11-23 00:36:26