Youtube视频未加载到WebView中

时间:2019-02-19 05:02:21

标签: webview xamarin.android mvvmcross

我想使用ListView和WebView显示Youtube Video的列表。但是未加载视频。

WebView始终显示发生错误,如下图所示: enter image description here

当前,我不知道如何将URL直接绑定到AXML文件中的 WebView ,为此,我改为自定义了 BindableWebView

public class BindableWebView : WebView
    {

        public BindableWebView(Context context, IAttributeSet attrs)
            : base(context, attrs)
        {
        }

        private string _webViewContent;

        public string WebViewContent
        {
            get { return _webViewContent; }
            set
            {
                _webViewContent = value;
                LoadHtmlString();
            }
        }

        private void LoadHtmlString()
        {
            LoadData(WebViewContent, "text/html", "utf-8");
        }
    }

这是Layout AXML文件:

    <dc.AlphaLinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:local="http://schemas.android.com/apk/res-auto"
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        local:MvxBind="Click ItemClickCommand">

        <!--Video Thumbnail-->
        <FrameLayout
            android:layout_width="@dimen/ProductImageWidth"
            android:layout_height="@dimen/ProductImageHeight"
            android:layout_margin="@dimen/ExtraNewsImagePadding">
            <BindableWebView
            android:id="@+id/playerWebView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            local:MvxBind="WebViewContent Video.YoutubeUrl" />
        </FrameLayout>

        <LinearLayout
           .....
        </LinearLayout>

</dc.AlphaLinearLayout>

这是视频模型:

namespace ....Shared.Models
{
    public class Video
    {
        public string YoutubeId { get; set; }

        public string YoutubeImageUrl => $"https://img.youtube.com/vi/{YoutubeId}/0.jpg";

        public string YoutubeUrl => $"<iframe width=\"100%\" height=\"100%\" src=\"https://www.youtube.com/embed/{YoutubeId}\" frameborder=\"0\" allowfullscreen></iframe>";

        public Guid NewsId { get; set; }
    }
}
在C#中

VideoListViewm

namespace DeHeus.Droid.Views
{
    public class VideoListView : DetailViewWithShare
    {
        protected override int LayoutId => Resource.Layout.VideoListView;
        private CustomMvxListView _videoListview;

        protected override void InitView(View view)
        {
            _videoListview = view.FindViewById<CustomMvxListView>(Resource.Id.videoList);
            _videoListview.ItemTemplateId = Resource.Layout.VideoListItemView;
        }

        protected override void CreateBinding()
        {
            var bindingSet = this.CreateBindingSet<VideoListView, VideoListViewModel>();

            bindingSet.Bind(_videoListview.Adapter)
                .For(v => v.ItemsSource)
                .To(vm => vm.VideoItemViewModels);


            bindingSet.Bind(_videoListview)
                .For(v => v.ScrollToBottom)
                .To(vm => vm.ScrollToBottomCommand);

            bindingSet.Apply();
        }
    }
}

运行调试,WebViewContent会获得确切的网址,但我不知道为什么它不起作用,如我所想:"<iframe width=\"100%\" height=\"100%\" src=\"https://www.youtube.com/embed/usoFYAqOMyA\" frameborder=\"0\" allowfullscreen></iframe>" enter image description here 有人知道吗? 谢谢

1 个答案:

答案 0 :(得分:0)

做了很多研究,我终于解决了这个问题。

您需要做的就是将SetWebChromeClient(new WebChromeClient());放在LoadData之前

 public BindableWebView(Context context, IAttributeSet attrs)
            : base(context, attrs)
        {
            WebSettings settings = this.Settings;
            settings.JavaScriptEnabled = true;
            SetWebChromeClient(new WebChromeClient());
        }

        private string _webViewContent;

        public string WebViewContent
        {
            get { return _webViewContent; }
            set
            {
                _webViewContent = value;
                LoadHtmlString();
            }
        }

        private void LoadHtmlString()
        {
            LoadData(WebViewContent, "text/html", "utf-8");
        }