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//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++;
    }