怎么在webview中正常播放html的视频

[有点小激动]

红框内为html的视频 在小屏手机里webview只显示了一般的htnl文件 我现在是想让html的视频能够点击全屏播放
在网上查的例子 添加的代码但是不显示

 private View xCustomView;
    @ViewInject(R.id.video_view)
    private FrameLayout videoview;// 全屏时视频加载view
 @ViewInject(R.id.study_details_video)
    WebView study_details_video;
    private WebChromeClient.CustomViewCallback xCustomViewCallback;

private void palyVideo(String zipPath) {
        finshBtn.setVisibility(View.INVISIBLE);
        againBtn.setVisibility(View.INVISIBLE);
        i = Integer.parseInt(learningCoursewareDetailsBeanList.get(0).getLearningTime());
        handler.postDelayed(runnable, time);
        study_details_video.getSettings().setJavaScriptEnabled(true);
        study_details_video.getSettings().setPluginState(WebSettings.PluginState.ON);
        study_details_video.getSettings().setPluginsEnabled(true);//可以使用插件
        study_details_video.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
        study_details_video.getSettings().setAllowFileAccess(true);
        study_details_video.getSettings().setBuiltInZoomControls(true);// 隐藏缩放按钮
        study_details_video.getSettings().setDefaultTextEncodingName("UTF-8");
        study_details_video.getSettings().setUseWideViewPort(true);// 可任意比例缩放
        study_details_video.getSettings().setLoadWithOverviewMode(true);
        study_details_video.getSettings().setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NARROW_COLUMNS);// 排版适应屏幕
        study_details_video.setWebViewClient(new xWebViewClientent());
        study_details_video.setWebChromeClient(new DefaultWebChromeClient());
        study_details_video.loadUrl(zipPath);
    }

    private class DefaultWebChromeClient extends WebChromeClient {
        private Bitmap xdefaltvideo;
        private View xprogressvideo;

        @Override//开启全屏
        public void onShowCustomView(View view, CustomViewCallback callback) {
            super.onShowCustomView(view, callback);
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
            study_details_video.setVisibility(View.GONE);
            //如果一个视图已经存在，那么立刻终止并新建一个
            if (xCustomView != null) {
                callback.onCustomViewHidden();
                return;
            }
            videoview.addView(view);
            xCustomView = view;
            xCustomViewCallback = callback;
            videoview.setVisibility(View.VISIBLE);
        }

        @Override//视频播放退出全屏会被调用的
        public void onHideCustomView() {
            super.onHideCustomView();
            if (xCustomView == null)//不是全屏播放状态
                return;
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            xCustomView.setVisibility(View.GONE);
            videoview.removeView(xCustomView);
            xCustomView = null;
            videoview.setVisibility(View.GONE);
            xCustomViewCallback.onCustomViewHidden();
            study_details_video.setVisibility(View.VISIBLE);
        }

        @Override//视频加载添加默认图标
        public Bitmap getDefaultVideoPoster() {
            if (xdefaltvideo == null) {
                xdefaltvideo = BitmapFactory.decodeResource(
                        getResources(), R.drawable.videoicon);
            }
            return xdefaltvideo;
        }

        //视频加载时进程loading
        @Override
        public View getVideoLoadingProgressView() {
            if (xprogressvideo == null) {
                LayoutInflater inflater = LayoutInflater.from(StudyDetailsActivity.this);
                xprogressvideo = inflater.inflate(R.layout.video_loading_progress, null);
            }
            return xprogressvideo;
        }

    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            if (inCustomView()) {
                hideCustomView();
                return true;
            } else {
                study_details_video.loadUrl("about:blank");
                StudyDetailsActivity.this.finish();
            }
        }
        return true;
    }

    /**
     * 判断是否是全屏
     *
     * @return
     */
    public boolean inCustomView() {
        return (xCustomView != null);
    }

    /**
     * 全屏时按返加键执行退出全屏方法
     */
    public void hideCustomView() {
        new DefaultWebChromeClient().onHideCustomView();
    }

    /**
     * 处理各种通知、请求等事件
     *
     * @author
     */
    public class xWebViewClientent extends WebViewClient {

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            Log.e("webviewtest", "shouldOverrideUrlLoading: " + url);
            view.loadUrl(url);
            return true;
        }

        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            super.onPageStarted(view, url, favicon);
            Log.e("webviewtest", "shouldOverrideUrlLoading: " + url);
        }
    }

现在情况是点击视频无反应，我想获取html里的视频地址 也获取不到 求解
最后上个我的html的内容截图