@Override
 public void onLoadMore() {
   Log.e("", "加载更多");
   // loadingDialog = ProgressDialog.show(DoctorVisitActivity.this, "",
   // "正在加载中……",
   // true, true);
   PageIndex = PageIndex + 1;
   read();
   adapter.notifyDataSetChanged();
   listView.stopRefresh();
   listView.stopLoadMore();
 }
 @Override
 public void onRefresh() {
   Log.e("", "上拉刷新");
   // loadingDialog = ProgressDialog.show(DoctorVisitActivity.this, "",
   // "正在加载中……",
   // true, true);
   // TODO Auto-generated method stub
   PageIndex = 1;
   read();
   adapter.notifyDataSetChanged();
   listView.stopRefresh();
   listView.stopLoadMore();
   Time t = new Time(); // or Time t=new Time("GMT+8"); 加上Time Zone资料。
   t.setToNow(); // 取得系统时间。
   xlistview_header_time.setText(
       (t.month + 1) + "月" + t.monthDay + "日" + t.hour + ":" + t.minute);
 }