Android:如何在quickblox中获取在线或离线用户状态？

// 获取ChatManager实例
ChatManager chatManager = ChatManager.getInstance();

// 添加连接监听器
chatManager.addConnectionListener(new ConnectionListener() {
    @Override
    public void connected(XMPPConnection connection) {
        // 连接成功
        Roster roster = connection.getRoster();
        Collection<RosterEntry> entries = roster.getEntries();
        
        for (RosterEntry entry : entries) {
            // 获取用户的在线或离线状态
            Presence presence = roster.getPresence(entry.getUser());
            
            if (presence.isAvailable()) {
                // 用户在线
                Log.d("User Status", entry.getUser() + " is online");
            } else {
                // 用户离线
                Log.d("User Status", entry.getUser() + " is offline");
            }
        }
    }

    @Override
    public void connectionClosed() {
        // 连接关闭
    }

    @Override
    public void connectionClosedOnError(Exception e) {
        // 连接关闭或出现错误
    }
});

// 登录到quickblox服务器
chatManager.login(user, password);