//每5秒请求一次服务器
timer=new Timer();
timer.scheduleAtFixedRate(new TimerTask() {
  @Override
  public void run() {
    Message message=new Message();
    message.what=1;
    handler.sendMessage(message);
  }
}, 1000,5000);

private Handler handler=new Handler(){
  public void handleMessage(Message msg) {
    switch (msg.what) {
      case 1:
        updateTitle();
        break;
      default:
        break;
    }
  };
};

private int count=1;

 private void updateTitle() {
    loadHosity();
    count++;
  }