Question

我想使用xmpp和asmack制作聊天应用程序，但我遇到了一个问题：我无法获得服务器上的所有用户。首先，我建立了一个连接，然后我登录了它，然后我尝试检索用户，但我总是得到一个空的集合。

public void connect() {

    final ProgressDialog dialog = ProgressDialog.show(this,
            "Connecting...", "Please wait...", false);

    Thread t = new Thread(new Runnable() {

        @Override
        public void run() {
            // Create a connection
            ConnectionConfiguration connConfig = new ConnectionConfiguration(
                    HOST, PORT, SERVICE);
            XMPPConnection connection = new XMPPConnection(connConfig);

            try {
                connection.connect();
                Log.i("XMPPChatDemoActivity",
                        "Connected to " + connection.getHost());
            } catch (XMPPException ex) {
                Log.e("XMPPChatDemoActivity", "Failed to connect to "
                        + connection.getHost());
                Log.e("XMPPChatDemoActivity", ex.toString());
                setConnection(null);
            }
            try {
                // SASLAuthentication.supportSASLMechanism("PLAIN", 0);
                connection.login(USERNAME, PASSWORD);
                Log.i("XMPPChatDemoActivity",
                        "Logged in as " + connection.getUser());

                // Set the status to available
                Presence presence = new Presence(Presence.Type.available);
                connection.sendPacket(presence);
                setConnection(connection);

                // here in roster i always get null.

                Collection<RosterEntry> roster = connection.getRoster()
                        .getEntries();

                for (RosterEntry entry : roster) {
                    Log.d("XMPPChatDemoActivity",
                            "--------------------------------------");
                    Log.d("XMPPChatDemoActivity", "RosterEntry " + entry);
                    Log.d("XMPPChatDemoActivity",
                            "User: " + entry.getUser());
                    Log.d("XMPPChatDemoActivity",
                            "Name: " + entry.getName());
                    Log.d("XMPPChatDemoActivity",
                            "Status: " + entry.getStatus());
                    Log.d("XMPPChatDemoActivity",
                            "Type: " + entry.getType());


                }
            } catch (XMPPException ex) {
                Log.e("XMPPChatDemoActivity", "Failed to log in as "
                        + USERNAME);
                Log.e("XMPPChatDemoActivity", ex.toString());
                setConnection(null);
            }

            dialog.dismiss();
        }
    });
    t.start();
    dialog.show();
}

Answer 1

要获得名单，只需搜索名为注册属性的插件，或者如果已安装，请在用户部分中搜索它。

然后选中“启用自动向组添加新用户”。同样在底部创建一个新的默认组，以便在创建新用户时，它将自动添加到此默认组。

之后运行相同的代码，您将获得基于xmpp协议的服务器上的所有用户。

roster.getEntities（）总是返回null aSmack android

1 个答案: