Android Web View无法加载YouTube嵌入的视频

我试图在android上用webview加载youtube嵌入式视频,当我试图加载嵌入式视频时,它不会在播放器上显示任何视频。

这是我正在玩的示例代码

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    b1 = (Button) findViewById(R.id.button);
    ed1 = (EditText) findViewById(R.id.editText);

    wv1 = (WebView) findViewById(R.id.webView);
    wv1.clearCache(true);
    wv1.setWebViewClient(new MyBrowser());
    wv1.getSettings().setJavaScriptEnabled(true);
    wv1.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
    wv1.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
    wv1.getSettings().setDomStorageEnabled(true);
    wv1.setWebViewClient(new WebViewClient());

    b1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
          String url = ed1.getText().toString();
          wv1.getSettings().setLoadsImagesAutomatically(true);
          wv1.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
          url = "https://www.youtube.com/embed/vlkNcHDFnGA";
          // In particular I am interested in the above video as it requires HTTPS origin as well

          wv1.loadUrl(url);
        }
    });

我本来想在弗雷特身上试试这个, Flutter: Web View Secure Origin ,但无法使其工作,因此我正在android上尝试找出使其工作所需的设置。