/** 更新评论界面 */
 private void updateCommentFragment(int newsId) {
   FragmentManager fm = getSupportFragmentManager();
   String tag = mAdapter.getTab(1).tag;
   Fragment fragment = fm.findFragmentByTag(tag);
   if (fragment != null && fragment instanceof UpdateDatasEvent) {
     UpdateDatasEvent event = (UpdateDatasEvent) fragment;
     event.onNotifyUpdate(newsId);
   } else {
     L.d("comment is null");
   }
 }
  /** 更新资讯内容数据 */
  private void updateBodyFragment(News news) {
    // 更新adapter里的数据
    TabInfo info = mAdapter.getTab(0);
    FragmentManager fm = getSupportFragmentManager();
    String tag = info.tag;

    Fragment fragment = fm.findFragmentByTag(tag);
    if (fragment != null && fragment instanceof UpdateDatasEvent) {
      UpdateDatasEvent event = (UpdateDatasEvent) fragment;
      event.onNotifyUpdate(news);
    } else {
      L.d("body is null");
      info.args.putSerializable(Contanst.NEWS_DATA_KEY, news);
    }
  }