Getting offline messages in android chat application with use of asmack library

Question

I am using asmack library for my chat application.I am using below described code for getting messagecount:

ServiceDiscoveryManager manager = ServiceDiscoveryManager.getInstanceFor(connection);
                 DiscoverInfo info = manager.discoverInfo(null,"http://jabber.org/protocol/offline");
                    Form extendedInfo = Form.getFormFrom(info);
                    if (extendedInfo != null) {
                        String value = extendedInfo.getField("number_of_messages").getValues().next();
                        Log.e(TAG, "offline message"+value);


                    }

But i got exception as described below:

09-14 16:11:32.892: ERROR/AndroidRuntime(498):     at com.datingapps.breaktheice.SigninScreen.coonectToChat(SigninScreen.java:393)
09-14 16:35:20.611: WARN/System.err(538): java.lang.ClassCastException: org.jivesoftware.smack.util.PacketParserUtils$2
09-14 16:35:20.811: WARN/System.err(538):     at org.jivesoftware.smackx.ServiceDiscoveryManager.discoverInfo(ServiceDiscoveryManager.java:608)
09-14 16:35:20.811: WARN/System.err(538):     at com.datingapps.breaktheice.Chat$connectionTask.doInBackground(Chat.java:286)
09-14 16:35:20.811: WARN/System.err(538):     at com.datingapps.breaktheice.Chat$connectionTask.doInBackground(Chat.java:1)
09-14 16:35:20.811: WARN/System.err(538):     at android.os.AsyncTask$2.call(AsyncTask.java:185)
09-14 16:35:20.811: WARN/System.err(538):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
09-14 16:35:20.821: WARN/System.err(538):     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
09-14 16:35:20.821: WARN/System.err(538):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
09-14 16:35:20.821: WARN/System.err(538):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
09-14 16:35:20.821: WARN/System.err(538):     at java.lang.Thread.run(Thread.java:1096)

Anybody who have implemented it with asmack or have alternate solution with smack lib, Please help me to get out of this problem.

Answer 1

After Googling and searching in documentation,All i got that offlinemanager for getting offline messages.

But However it is not working in asmack or may be in smack.It always return 0 message.

Finally by seeing logs i found that each tie when i login i got lot of response from chat server which also contains offline message but with message tag not offline message tag.So I found finally

You can get offline messages from it by directly setting packet listener after just login .As i below described packet listener you have to implement after login method.

        PacketFilter filter = new MessageTypeFilter(Message.Type.chat);
        this.connection.addPacketListener(new PacketListener() {
            public void processPacket(Packet packet) {

                Message message = (Message) packet;
                if (message.getBody() != null) {
                    String fromName = StringUtils.parseBareAddress(message
                            .getFrom());
                    Log.i("XMPPClient", "Got text [" + message.getBody()
                            + "] from [" + fromName + "]");
                    if (fromName.equalsIgnoreCase(matchUserJabberId
                            + "server name")) {


                        // }
                    }
                }
            }
        }, filter);

Hope it will help many to find a work around for offline message early as i invested more time to get it out.