java - XMPP and Android Part-2 -

this question continuation of previous question though have managed remove networkonmainthreaderror, have new errors fight with,

previous question can found here: xmpp , android

this time guess probelm host name, or may service name, trying connect openfire server.

by way need add public class settingsdialog extends dialog menifest file

my code connection:

/**  * gather xmpp settings , create xmppconnection  */ public class settingsdialog extends dialog implements android.view.view.onclicklistener {     private xmppclient xmppclient;      public settingsdialog(xmppclient xmppclient) {         super(xmppclient);         this.xmppclient = xmppclient;     }      protected void onstart() {         super.onstart();         setcontentview(r.layout.settings);         getwindow().setflags(4, 4);         settitle("xmpp settings");         button ok = (button) findviewbyid(r.id.ok);         ok.setonclicklistener(this);     }           public void onclick(view v) {              new networkoperation().execute();             dismiss();         } 

async task

public class networkoperation extends asynctask<string, void, string> {      private xmppclient xmppclient;     @override     protected string doinbackground(string... urls) {          string host = "web.vlivetech.com"; //gettext(r.id.host);         string port = "5222";  //gettext(r.id.port);         string service = "web.vlivetech.com"; //gettext(r.id.service);         string username = "khubaib@web.vlivetech.com"; //gettext(r.id.userid);         string password = "khubaib"; //gettext(r.id.password);          // create connection         connectionconfiguration connconfig =                 new connectionconfiguration(host, integer.parseint(port),service);         xmppconnection connection = new xmppconnection(connconfig);          try {             connection.connect();             log.i("xmppclient", "[settingsdialog] connected " + connection.gethost());         } catch (xmppexception ex) {             log.e("xmppclient", "[settingsdialog] failed connect " + connection.gethost());             xmppclient.setconnection(null);         }         try {             connection.login(username, password);             log.i("xmppclient", "logged in " + connection.getuser());              // set status available             presence presence = new presence(presence.type.available);             connection.sendpacket(presence);             xmppclient.setconnection(connection);         } catch (xmppexception ex) {             log.e("xmppclient", "[settingsdialog] failed log in " + username);             xmppclient.setconnection(null);         }        return null;     }      @override     protected void onpostexecute(string result) {      }   } 

line on getting error in async task:

try {             connection.connect();             log.i("xmppclient", "[settingsdialog] connected " + connection.gethost());         } catch (xmppexception ex) {             log.e("xmppclient", "[settingsdialog] failed connect " + connection.gethost());             xmppclient.setconnection(null);         } 

log file

03-06 17:50:39.754: i/smackconfiguration(16410): no configuration file found 03-06 17:50:39.764: e/xmppclient(16410): [settingsdialog] failed connect null 03-06 17:50:39.764: w/dalvikvm(16410): threadid=11: thread exiting uncaught exception (group=0x40aaa210) 03-06 17:50:39.774: e/androidruntime(16410): fatal exception: asynctask #1 03-06 17:50:39.774: e/androidruntime(16410): java.lang.runtimeexception: error occured while executing doinbackground() 03-06 17:50:39.774: e/androidruntime(16410):    @ android.os.asynctask$3.done(asynctask.java:278) 03-06 17:50:39.774: e/androidruntime(16410):    @ java.util.concurrent.futuretask$sync.innersetexception(futuretask.java:273) 03-06 17:50:39.774: e/androidruntime(16410):    @ java.util.concurrent.futuretask.setexception(futuretask.java:124) 03-06 17:50:39.774: e/androidruntime(16410):    @ java.util.concurrent.futuretask$sync.innerrun(futuretask.java:307) 03-06 17:50:39.774: e/androidruntime(16410):    @ java.util.concurrent.futuretask.run(futuretask.java:137) 03-06 17:50:39.774: e/androidruntime(16410):    @ android.os.asynctask$serialexecutor$1.run(asynctask.java:208) 03-06 17:50:39.774: e/androidruntime(16410):    @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1076) 03-06 17:50:39.774: e/androidruntime(16410):    @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:569) 03-06 17:50:39.774: e/androidruntime(16410):    @ java.lang.thread.run(thread.java:856) 03-06 17:50:39.774: e/androidruntime(16410): caused by: java.lang.nullpointerexception 03-06 17:50:39.774: e/androidruntime(16410):    @ com.example.test.networkoperation.doinbackground(networkoperation.java:33) 03-06 17:50:39.774: e/androidruntime(16410):    @ com.example.test.networkoperation.doinbackground(networkoperation.java:1) 03-06 17:50:39.774: e/androidruntime(16410):    @ android.os.asynctask$2.call(asynctask.java:264) 03-06 17:50:39.774: e/androidruntime(16410):    @ java.util.concurrent.futuretask$sync.innerrun(futuretask.java:305) 

if networkoperation inside activity remove line networkoperation or might want add constructor(?), pass xmppclient .execute()

private xmppclient xmppclient;