Facebook的API实时朋友的在线presence更新

问题描述

我目前正在开发Facebook的应用程序里面有我的朋友列表以及他们的在线presence。为了得到这个，我用：

I'm currently developing an app in facebook which has a list of my friends and shows their online presence. To get this, I used:

$fql = "SELECT uid, name, online_presence, status FROM user WHERE uid IN ( SELECT uid2 FROM friend WHERE uid1 = '".$this->user_id."')";
$active = $this->facebook->api(array(
  'method' => 'fql.query',
  'query' =>$fql
));

不过，因为我在的时候，我打开我的应用程序只获得该信息（状态，在线presence），它会不会改变，直到我重装我的应用程序。

But since I'm only getting this information (status, online presence) at the time when I open my app, it'll not change until I reload my app.

我的问题是，我怎么能由我的朋友们的状态变化或online- presence变化的实时更新？

My question is, how can I get a real-time update of status-change or online-presence change by my friends?

请帮忙。谢谢你。

推荐答案

您要么需要定期做查询，或使用XMPP（Jabber的）连接来获取实时更新。

You would either need to do that query periodically, or use an XMPP (Jabber) connection to get updates in real-time.

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