android - Facebook Session is already opened -

i have updated facebook sdk code used work no longer works.

i getting following exception:

06-10 10:37:58.146: e/androidruntime(28184): java.lang.unsupportedoperationexception: session: attempt made open opened session. 06-10 10:37:58.146: e/androidruntime(28184):    @ com.facebook.session.open(session.java:985) 06-10 10:37:58.146: e/androidruntime(28184):    @ com.facebook.session.openforread(session.java:388) 

and have following code open session:

        session session = session.getactivesession();         if (session == null) {             session = new session(dealactivity.this);         }         //session.isopened() apparently false!         if (!session.isopened()) {             session.openrequest openrequest = null;             openrequest = new session.openrequest(this);             openrequest.setpermissions(facebookmanager.read_permissions);             openrequest.setloginbehavior(sessionloginbehavior.sso_with_fallback);             openrequest.setcallback(callback);             session.openforread(openrequest);             return;         } else {             getdatafromfacebook();         } 

as using facebook uilifecyclehelper object in needed callbacks(it used work).

and onactivityresult callback have tried calling first this:

    uihelper.onactivityresult(requestcode, resultcode, data); 

and following code:

    session session = session.getactivesession();     if (session != null) {         session.onactivityresult(dealactivity.this, requestcode, resultcode, data);     }  

both of them didn't work.

this facebook session.statuscallback

private session.statuscallback callback = new session.statuscallback() {     @override     public void call(session session, sessionstate state, exception exception) {         onsessionstatechange(session, state, exception);     } };  private void onsessionstatechange(session session, sessionstate state, exception exception) {     if (exception != null) {         exception.printstacktrace();         return;     }     if (state.isopened()) {         getdatafromfacebook();     } else if (state.isclosed()) {     } } 

what want achieve :

1. login
2. get basic data user (that part know how do)
3. logout

after looking @ facebook developers guide couldn't find simple example appreciate example that.

i posting here simple class inside facebook examples:

public class loginusingactivityactivity extends activity {     private static final string url_prefix_friends = "https://graph.facebook.com/me/friends?access_token=";      private textview textinstructionsorlink;     private button buttonloginlogout;     private session.statuscallback statuscallback = new sessionstatuscallback();      @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity);         buttonloginlogout = (button)findviewbyid(r.id.buttonloginlogout);         textinstructionsorlink = (textview)findviewbyid(r.id.instructionsorlink);          settings.addloggingbehavior(loggingbehavior.include_access_tokens);          session session = session.getactivesession();         if (session == null) {             if (savedinstancestate != null) {                 session = session.restoresession(this, null, statuscallback, savedinstancestate);             }             if (session == null) {                 session = new session(this);             }             session.setactivesession(session);             if (session.getstate().equals(sessionstate.created_token_loaded)) {                 session.openforread(new session.openrequest(this).setcallback(statuscallback));             }         }          updateview();     }      @override     public void onstart() {         super.onstart();         session.getactivesession().addcallback(statuscallback);     }      @override     public void onstop() {         super.onstop();         session.getactivesession().removecallback(statuscallback);     }      @override     public void onactivityresult(int requestcode, int resultcode, intent data) {         super.onactivityresult(requestcode, resultcode, data);         session.getactivesession().onactivityresult(this, requestcode, resultcode, data);     }      @override     protected void onsaveinstancestate(bundle outstate) {         super.onsaveinstancestate(outstate);         session session = session.getactivesession();         session.savesession(session, outstate);     }      private void updateview() {         session session = session.getactivesession();         if (session.isopened()) {             textinstructionsorlink.settext(url_prefix_friends + session.getaccesstoken());             buttonloginlogout.settext(r.string.logout);             buttonloginlogout.setonclicklistener(new onclicklistener() {                 public void onclick(view view) { onclicklogout(); }             });         } else {             textinstructionsorlink.settext(r.string.instructions);             buttonloginlogout.settext(r.string.login);             buttonloginlogout.setonclicklistener(new onclicklistener() {                 public void onclick(view view) { onclicklogin(); }             });         }     }      private void onclicklogin() {         session session = session.getactivesession();         if (!session.isopened() && !session.isclosed()) {             session.openforread(new session.openrequest(this).setcallback(statuscallback));         } else {             session.openactivesession(this, true, statuscallback);         }     }      private void onclicklogout() {         session session = session.getactivesession();         if (!session.isclosed()) {             session.closeandcleartokeninformation();         }     }      private class sessionstatuscallback implements session.statuscallback {         @override         public void call(session session, sessionstate state, exception exception) {             updateview();         }     } } 

hope helps :)