OnCreateContextMenu不适用于网络视图

Question

我具有网络视图，单击链接时，我需要为其创建上下文菜单，这是我所做的事情：

 protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);

    SetContentView(Resource.Layout.Webview);

    wv = (WebView)FindViewById(Resource.Id.WV);
    RegisterForContextMenu(wv);
    wv.SetWebChromeClient(new WebChromeClient());
    wv.SetWebViewClient(new WebViewClient());
    wv.Settings.JavaScriptEnabled = true;
    wv.Settings.DomStorageEnabled = true;
    wv.Settings.SetSupportZoom(true);
    wv.Settings.DisplayZoomControls = false;
    wv.Settings.BuiltInZoomControls = true;
    wv.Settings.CacheMode = CacheModes.Default;
    wv.Settings.UseWideViewPort = true;
    wv.Settings.LoadWithOverviewMode = true;
    wv.SetInitialScale(1);

    wv.LoadUrl("file:///android_asset/index.html");


     }



    public override void OnCreateContextMenu(IContextMenu menu, View v, IContextMenuContextMenuInfo menuInfo)
   {
    base.OnCreateContextMenu(menu, v, menuInfo);
    WebView webView = (WebView)v;
    result = webView.GetHitTestResult();


    if (result.GetType().ToString().Equals("SRC_ANCHOR_TYPE") || result.GetType().ToString().Equals("ANCHOR_TYPE"))
    {

        var item = menu.Add("copylink");
        item.SetOnMenuItemClickListener(this);

    }


} 

但是“ result.GetType（）”不能检测到锚点类型链接，“ result.GetType（）”不能在按下长按时检测到Webview中的任何链接。

Answer 1

如果要向菜单添加项目，则应重写OnActionModeStarted方法。然后添加类似SetOnMenuItemClickListener的以下代码。

   public override void OnActionModeStarted(ActionMode mode)
    {
        IMenu menu = mode.Menu;
        menu.Add("Add To Notes");
        menu.GetItem(0).SetOnMenuItemClickListener(new MyMenuItemOnMenuItemClickListener(this));

        base.OnActionModeStarted(mode);
    }

 internal class MyMenuItemOnMenuItemClickListener : Java.Lang.Object, IMenuItemOnMenuItemClickListener
{
    private MainActivity mainActivity;

    public MyMenuItemOnMenuItemClickListener(MainActivity mainActivity)
    {
        this.mainActivity = mainActivity;
    }

    public bool OnMenuItemClick(IMenuItem item)
    {
        Toast.MakeText(mainActivity, "You click the Add To Notes", ToastLength.Short).Show();
        return true;
    }
}

这里正在运行GIF。

如果要创建新菜单，可以使用menu.Clear();

public override void OnActionModeStarted(ActionMode mode)
    {
        IMenu menu = mode.Menu;
        menu.Clear();
        menu.Add("Add To Notes");
        menu.GetItem(0).SetOnMenuItemClickListener(new MyMenuItemOnMenuItemClickListener(this));

        base.OnActionModeStarted(mode);
    }   

这里正在运行屏幕截图。