在Android WebView中启用HTML5视频播放？

用于播放视频剪辑的HTML代码如下：

<video poster preload="true" controls autoplay width="500" height="200">
  <source src="http://www.edmondvarga.com/demo/videos/video.mp4" type="video/mp4">
  </video>

主要Activity.java：

package tscolari.mobile_sample;

import android.app.Activity;
import android.os.bundle;
import android.view.View;
import android.webkit.WebSetTings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class InfoSpotActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceStatE) {
        super.onCreate(savedInstanceStatE);


        setContentView(R.layout.main);

        WebView mainWebView = (WebView) findViewById(R.id.mainWebView);

        WebSetTings webSetTings = mainWebView.getSetTings();
        webSetTings.setJavaScriptEnabled(true);

        mainWebView.setWebViewClient(new MyCustomWebViewClient());
        mainWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);

        mainWebView.loadUrl("http://server.info-spot.net");
    }

    private class MyCustomWebViewClient extends WebViewClient {
        @Override
        public Boolean shouldOverrideUrlLoading(WebView view,String url) {
            view.loadUrl(url);
            return true;
        }
    }
}

如何在webview中启用视频播放？