/**
   * @param mode
   * @param newStatus
   */
  private void refreshList(int mode, List<Status> newStatus) {
    if (newStatus != null) {
      if (newStatus.size() > 0) {
        switch (mode) {
          case Task.TA_GETSTATUS_MODE_FIRSTTIME:
            currentStatus = newStatus;
            adapter = new TaskAdapter(this, currentStatus);
            xlist_task.setAdapter(adapter);
            lastestUpdata = TimeUtil.setLastestUpdata();
            break;

          case Task.TA_GETSTATUS_MODE_LOADMORE:
            currentStatus.addAll(newStatus);
            adapter.notifyDataSetChanged();
            break;

          default:
            break;
        }
        changeListData();
      } else {
        LinearLayout layout = (LinearLayout) findViewById(R.id.layout_no_info);
        TextView txt_no_info = (TextView) findViewById(R.id.txt_no_info);
        txt_no_info.setText("还没有报名过任务");
        layout.setVisibility(View.VISIBLE);
      }
    } else {
      xlist_task.stopRefresh();
    }

    /*把标志设为false,这样才能再开获取status的网络连接*/
    isRefresh = false;
  }
 /*
  * 改变list相关的保存的数据
  */
 private void changeListData() {
   xlist_task.stopRefresh();
   xlist_task.stopLoadMore();
   xlist_task.setRefreshTime(lastestUpdata);
   if (currentStatus.size() >= 10) {
     oldestStatusId = currentStatus.get(currentStatus.size() - 1).getStatusId();
     xlist_task.setPullLoadEnable(true);
   }
 }