Xamarin.macOS CustomWebView 的导航事件未触发

Question

我已经为我的 WebView 创建了自定义渲染器，因为我需要设置属性 CustomUserAgent。但是对于我的 CustomWebView 事件 Navigated 没有被触发。据我了解，我需要设置 NavigationDelegate 但找不到任何工作示例。这是我的代码：

[assembly: ExportRenderer(typeof(CustomWebView), typeof(CustomWebViewRenderer))]
namespace DesktopClient.MacOS.CustomRenderers
{
    public class CustomWebViewRenderer : ViewRenderer<CustomWebView, WKWebView>
    {
        private WKWebView wkWebView;

        protected override void OnElementChanged(ElementChangedEventArgs<CustomWebView> e)
        {
            base.OnElementChanged(e);            

            if (this.Control == null)
            {
                WKWebViewConfiguration config = new();                

                this.wkWebView = new WKWebView(this.Frame, config)
                {
                    NavigationDelegate = new WKNavigationDelegate()
                };

                this.SetNativeControl(this.wkWebView);

                WKWebViewContainer.WKWebView = this.wkWebView;
            }

            if (e.NewElement != null)
            {
                UrlWebViewSource source = (UrlWebViewSource)e.NewElement.Source;

                if (source != null)
                {
                    this.Control.LoadRequest(new NSUrlRequest(new NSUrl(source.Url)));
                }
                
                this.Control.CustomUserAgent = e.NewElement.UserAgent;
                this.wkWebView.NavigationDelegate = new WKNavigationDelegate();
            }
        }
    }
}

Answer 1

创建一个新的class继承自WKNavigationDelegate并分配给Webview.NavigationDelegate，然后你可以在新的class中重写DidFinishNavigation的方法.

示例代码

NavigationDelegate = new MyDelegate();

public class MyDelegate : WKNavigationDelegate {

    public override void DidFinishNavigation(WKWebView webView, WKNavigation navigation)
    {
            
    }
}

但是，我发现 DidFinishNavigation 方法在初始加载时不会触发，它只能在我们导航到其他网页时触发。

Xamarin.macOS CustomWebView 的导航事件未触发

Xamarin.macOS Navigated event not fire for CustomWebView

macos

xamarin

xamarin.mac

示例代码