我正在使用 asmack api 为 Gtalk 创建一个聊天应用程序，我想在用户离线时获取消息，但是由于 ServiceDiscoveryManager 中的一些问题以及它说该功能未实现(501)并试图实现了其他用户有同样问题的所有事情，但现在我收到了这个错误。我正在发布代码和 logcat。任何帮助表示赞赏。

 ConnectionConfiguration connConfig = new ConnectionConfiguration(
                    host, Integer.parseInt(port), service);
 connConfig.setSASLAuthenticationEnabled(true);
 connConfig.setSendPresence(false);
 connection = new XMPPConnection(connConfig);
 connection.connect();
 connection.login(username, password);
 ServiceDiscoveryManager sdm= ServiceDiscoveryManager.getInstanceFor(connection);
 mOfflineMessageManager = new OfflineMessageManager(connection);
 offlinemsgs = mOfflineMessageManager.getMessageCount(); 

这是我在登录后调用离线消息的代码，下面是logcat错误的响应:

03-16 11:26:53.871: W/System.err(325): feature-not-implemented(501)
03-16 11:26:53.881: W/System.err(325):  at org.jivesoftware.smackx.OfflineMessageManager.getMessages(OfflineMessageManager.java:210)
03-16 11:26:53.881: W/System.err(325):  at com.apache.android.xmpp.MainScreen.getOfflinemessages(MainScreen.java:911)
03-16 11:26:53.881: W/System.err(325):  at com.apache.android.xmpp.MainScreen$LogIn.doInBackground(MainScreen.java:612)
03-16 11:26:53.881: W/System.err(325):  at com.apache.android.xmpp.MainScreen$LogIn.doInBackground(MainScreen.java:1)
03-16 11:26:53.881: W/System.err(325):  at android.os.AsyncTask$2.call(AsyncTask.java:185)
03-16 11:26:53.881: W/System.err(325):  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
03-16 11:26:53.881: W/System.err(325):  at java.util.concurrent.FutureTask.run(FutureTask.java:137)
03-16 11:26:53.881: W/System.err(325):  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
03-16 11:26:53.881: W/System.err(325):  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
03-16 11:26:53.891: W/System.err(325):  at java.lang.Thread.run(Thread.java:1096)

请帮助解决这个问题，尝试了很多天的解决方案，但找不到任何解决方案。

最佳答案

试试这个:

 ConnectionConfiguration connConfig = new ConnectionConfiguration(
                    host, Integer.parseInt(port), service);
 connConfig.setSASLAuthenticationEnabled(true);
 connConfig.setSendPresence(false);
 connection = new XMPPConnection(connConfig);
 connection.connect();
 connection.login(username, password);
 ServiceDiscoveryManager sdm= ServiceDiscoveryManager.getInstanceFor(connection);

////////////////////////////

    OfflineMessageManager offlineManager = new OfflineMessageManager(  
                    Client.getConnection());  
            try {  
                Iterator<org.jivesoftware.smack.packet.Message> it = offlineManager  
                        .getMessages();  
                System.out.println(offlineManager.supportsFlexibleRetrieval());  
                System.out.println("Number of offline messages:: " + offlineManager.getMessageCount());   
                Map<String,ArrayList<Message>> offlineMsgs = new HashMap<String,ArrayList<Message>>();    
                while (it.hasNext()) {  
                    org.jivesoftware.smack.packet.Message message = it.next();  
                    System.out  
                            .println("receive offline messages, the Received from [" + message.getFrom()  
                                    + "] the message:" + message.getBody());  
                    String fromUser = message.getFrom().split("/")[0];  

                    if(offlineMsgs.containsKey(fromUser))  
                    {  
                        offlineMsgs.get(fromUser).add(message);  
                    }else{  
                        ArrayList<Message> temp = new ArrayList<Message>();  
                        temp.add(message);  
                        offlineMsgs.put(fromUser, temp);  
                    }  
                }  
                / / Deal with a collection of offline messages ...  
                Set<String> keys = offlineMsgs.keySet();  
                Iterator<String> offIt = keys.iterator();  
                while(offIt.hasNext())  
                {  
                    String key = offIt.next();  
                    ArrayList<Message> ms = offlineMsgs.get(key);  
                    TelFrame tel = new TelFrame(key);  
                    ChatFrameThread cft = new ChatFrameThread(key, null);  
                    cft.setTel(tel);  
                    cft.start();  
                    for (int i = 0; i < ms.size(); i++) {  
                        tel.messageReceiveHandler(ms.get(i));  
                    }  
                }  
                offlineManager.deleteMessages();  
            } catch (Exception e) {  
                e.printStackTrace();  
            }  

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关于android - 无法使用 Gtalk 应用程序的 asmack api 获取离线消息，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/9732722/