android - How to get user birthday from facebook -

i used below code facebook user information when he/ login. problem couldn't user birthday or firstname of that. when wanted show user birthday show me empty string.

package com.example.test; import java.security.messagedigest; import java.util.arraylist; import java.util.arrays; import com.facebook.request; import com.facebook.request.graphusercallback; import com.facebook.response; import com.facebook.session; import com.facebook.sessionstate; import com.facebook.uilifecyclehelper; import com.facebook.model.graphuser; import com.facebook.widget.loginbutton; import android.app.activity; import android.app.progressdialog; import android.content.context; import android.content.intent; import android.content.pm.packageinfo; import android.content.pm.packagemanager; import android.content.pm.signature; import android.os.bundle; import android.util.base64; import android.util.log; import android.view.view; import android.widget.toast;   public class mainactivity extends activity   {public static progressdialog pdialog; private uilifecyclehelper uihelper;   loginbutton btn; string id,name,sex ,birthday; void showmsg(string string)    {        toast.maketext(getapplicationcontext(), string,         toast.length_short).show();    }         private session.statuscallback callback =new          session.statuscallback()       {          @override         public void call(session session, sessionstate state, exception                exception)          {              if (state.isopened()){                  intent in = new intent("com.example.test.profile");                 bundle bundle = new bundle();                  bundle.putstring("fb_id",id);                   session.getaccesstoken()  ;                 bundle.putstring("fb_bth", birthday);                 in.putextras(bundle);                 startactivity(in);                   btn.post(new runnable(){                          @override                         public void run() {                         //  btn.setvisibility(view.invisible);                             }});              }             onsessionstatechange(session,state,exception);         }     };        void onsessionstatechange(final session session, sessionstate state,        exception exception)       {          if (state.isopened())          {             log.i("facebook", "logged in...");              request.newmerequest(session, new request.graphusercallback()              {                 @override                 public void oncompleted(graphuser user, response response)                  {                      if(user!=null)                     {                          intent in = new intent("com.example.test.profile");                         bundle bundle =new bundle();                          bundle.putstring("fb_id", user.getid());                           bundle.putstring("fb_bth", user.getbirthday());                             in.putextras(bundle);                             startactivity(in);                              id=user.getid();                              session.getaccesstoken();                              birthday=user.getbirthday();                      }                      else                     {                         showmsg("its null");                         showmsg(response.geterror().geterrormessage());                     }                 }             }).executeasync();          }          else if (state.isclosed())          {             log.i("facebook", "logged out...");         }     }    @override protected void onresume() {          super.onresume();     uihelper.onresume();   }  @override protected void onsaveinstancestate(bundle outstate) {     super.onsaveinstancestate(outstate); uihelper.onsaveinstancestate(outstate); }  @override protected void onpause() {     super.onpause();     uihelper.onpause();     }  @override protected void ondestroy() {     super.ondestroy();     uihelper.ondestroy();    }  @override protected void onactivityresult(int requestcode, int resultcode, intent data) {      super.onactivityresult(requestcode, resultcode, data); uihelper.onactivityresult(requestcode, resultcode, data); }  @override protected void oncreate(bundle savedinstancestate)  {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     uihelper =new uilifecyclehelper(this,callback);        uihelper.oncreate(savedinstancestate);      arraylist<string> permission =new arraylist<string>();     permission.add("email");     permission.add("public_profile");     permission.add("user_friends");          permission.add("user_birthday");     permission.add("friends_birthday");        btn=(loginbutton)findviewbyid(r.id.fbbtn);      btn.setreadpermissions(permission);      // btn.setpublishpermissions(permission);      // todo auto-generated method stub       try {         packageinfo info = getpackagemanager().getpackageinfo(                 "com.example.testing",                  packagemanager.get_signatures);         (signature signature : info.signatures) {             messagedigest md = messagedigest.getinstance("sha");             md.update(signature.tobytearray());             log.d("keyhash:", base64.encodetostring(md.digest(), base64.default));             }     }     catch (exception e)      {        e.printstacktrace();     }   } 

}

i have found answer need add permission user graph api. need add @ last.

bundle parameters = new bundle();                 parameters.putstring("fields", "email,birthday");                 request.setparameters(parameters);                 request.executeasync();    package com.example.test; import java.security.messagedigest; import java.util.arraylist; import java.util.arrays; import com.facebook.request; import com.facebook.request.graphusercallback; import com.facebook.response; import com.facebook.session; import com.facebook.sessionstate; import com.facebook.uilifecyclehelper; import com.facebook.model.graphuser; import com.facebook.widget.loginbutton; import android.app.activity; import android.app.progressdialog; import android.content.context; import android.content.intent; import android.content.pm.packageinfo; import android.content.pm.packagemanager; import android.content.pm.signature; import android.os.bundle; import android.util.base64; import android.util.log; import android.view.view; import android.widget.toast;   public class mainactivity extends activity   {public static progressdialog pdialog; private uilifecyclehelper uihelper;   loginbutton btn; string id,name,sex ,birthday; void showmsg(string string)    {        toast.maketext(getapplicationcontext(), string,         toast.length_short).show();    }         private session.statuscallback callback =new          session.statuscallback()       {          @override         public void call(session session, sessionstate state, exception                exception)          {              if (state.isopened()){                  intent in = new intent("com.example.test.profile");                 bundle bundle = new bundle();                  bundle.putstring("fb_id",id);                   session.getaccesstoken()  ;                 bundle.putstring("fb_bth", birthday);                 in.putextras(bundle);                 startactivity(in);                   btn.post(new runnable(){                          @override                         public void run() {                         //  btn.setvisibility(view.invisible);                             }});              }             onsessionstatechange(session,state,exception);         }     };        void onsessionstatechange(final session session, sessionstate state,        exception exception)       {          if (state.isopened())          {             log.i("facebook", "logged in...");              request.newmerequest(session, new request.graphusercallback()              {                 @override                 public void oncompleted(graphuser user, response response)                  {                      if(user!=null)                     {                          intent in = new intent("com.example.test.profile");                         bundle bundle =new bundle();                          bundle.putstring("fb_id", user.getid());                           bundle.putstring("fb_bth", user.getbirthday());                             in.putextras(bundle);                             startactivity(in);                              id=user.getid();                              session.getaccesstoken();                              birthday=user.getbirthday();                      }                      else                     {                         showmsg("its null");                         showmsg(response.geterror().geterrormessage());                     }                 }             }) ;                bundle parameters = new bundle();                parameters.putstring("fields", "email,birthday");               request.setparameters(parameters);               request.executeasync();           }          else if (state.isclosed())          {             log.i("facebook", "logged out...");         }     }    @override protected void onresume() {          super.onresume();     uihelper.onresume();   }  @override protected void onsaveinstancestate(bundle outstate) {     super.onsaveinstancestate(outstate); uihelper.onsaveinstancestate(outstate); }  @override protected void onpause() {     super.onpause();     uihelper.onpause();     }  @override protected void ondestroy() {     super.ondestroy();     uihelper.ondestroy();    }  @override protected void onactivityresult(int requestcode, int resultcode, intent data) {      super.onactivityresult(requestcode, resultcode, data); uihelper.onactivityresult(requestcode, resultcode, data); }  @override protected void oncreate(bundle savedinstancestate)  {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     uihelper =new uilifecyclehelper(this,callback);        uihelper.oncreate(savedinstancestate);      arraylist<string> permission =new arraylist<string>();     permission.add("email");     permission.add("public_profile");     permission.add("user_friends");          permission.add("user_birthday");     permission.add("friends_birthday");        btn=(loginbutton)findviewbyid(r.id.fbbtn);      btn.setreadpermissions(permission);      // btn.setpublishpermissions(permission);      // todo auto-generated method stub       try {         packageinfo info = getpackagemanager().getpackageinfo(                 "com.example.testing",                  packagemanager.get_signatures);         (signature signature : info.signatures) {             messagedigest md = messagedigest.getinstance("sha");             md.update(signature.tobytearray());             log.d("keyhash:", base64.encodetostring(md.digest(), base64.default));             }     }     catch (exception e)      {        e.printstacktrace();     }   } }