Android: Parse + Facebook integration -

i working on parse , facebook integration reference tutorial https://github.com/parseplatform/integratingfacebooktutorial/tree/master/integratingfacebooktutorial-android, , come across headache problems can offer advice.

loginactivity.java

oncreate .... // check if there logged in user , it's linked facebook account.         parseuser currentuser = parseuser.getcurrentuser();         if ((currentuser != null) && parsefacebookutils.islinked(currentuser))          {             // go user info activity             showuserdetailsactivity();         }     @override   public void onactivityresult(int requestcode, int resultcode, intent data)    {     super.onactivityresult(requestcode, resultcode, data);     parsefacebookutils.onactivityresult(requestcode, resultcode, data);   }    public void onloginclick(view v)    {     progressdialog = progressdialog.show(loginactivity.this, "", "logging in...", true);      list<string> permissions = arrays.aslist(               "public_profile",               "user_friends",               "email",               "user_birthday"             );      parsefacebookutils.loginwithreadpermissionsinbackground(this, permissions, new logincallback()      {       @override       public void done(parseuser user, parseexception err)        {         progressdialog.dismiss();         if (user == null)          {           log.d(msg, "uh oh. user cancelled facebook login.");           utilities.custom_toast(loginactivity.this, "uh oh. user cancelled facebook login.", "gone!", "short");         }          else if (user.isnew())          {           log.d(msg, "user signed , logged in through facebook!");           utilities.custom_toast(loginactivity.this, "user signed , logged in through facebook!", "gone!", "short");           showuserdetailsactivity();         }          else          {           log.d(msg, "user logged in through facebook!");           utilities.custom_toast(loginactivity.this, "user logged in through facebook!", "gone!", "short");           showuserdetailsactivity();         }       }     });   }    private void showuserdetailsactivity()    {     intent intent = new intent(this, userdetails.class);     startactivity(intent);   } 

userdetails.java

@override       protected void onresume()      {           super.onresume();           parseuser currentuser = parseuser.getcurrentuser();         if (currentuser != null)          {           // check if user logged , show cached content           updateviewswithprofileinfo();         }          else          {           // if user not logged in, go activity showing login view.           startloginactivity();         }     }     private void makemerequest()      {         graphrequest request = graphrequest.newmerequest(accesstoken.getcurrentaccesstoken(), new graphrequest.graphjsonobjectcallback()          {               @override               public void oncompleted(jsonobject jsonobject, graphresponse graphresponse)                {                 if (jsonobject != null)                  {                     jsonobject userprofile = new jsonobject();                     try                      {                         userprofile.put("facebookid", jsonobject.getlong("id"));                         userprofile.put("name", jsonobject.getstring("name"));                          if (jsonobject.getstring("gender") != null)                             userprofile.put("gender", jsonobject.getstring("gender"));                          if (jsonobject.getstring("email") != null)                             userprofile.put("email", jsonobject.getstring("email"));                          // save user profile info in user property                         parseuser currentuser = parseuser.getcurrentuser();                         currentuser.put("user", userprofile);                         currentuser.saveinbackground();                          // show user info                         updateviewswithprofileinfo();                     }                      catch (jsonexception e)                      {                         log.d(tag,"error parsing returned user data. " + e);                     }                 }                  else if (graphresponse.geterror() != null)                  {                   switch (graphresponse.geterror().getcategory())                    {                     case login_recoverable:                         utilities.custom_toast(userdetails.this, "authentication error: " + graphresponse.geterror(), "gone!", "short");                       break;                      case transient:                         utilities.custom_toast(userdetails.this, "transient error. try again" + graphresponse.geterror(), "gone!", "short");                         log.d(tag,"transient error. try again. " + graphresponse.geterror());                       break;                      case other:                         utilities.custom_toast(userdetails.this, "some other error: " + graphresponse.geterror(), "gone!", "short");                         log.d(tag,"some other error: " + graphresponse.geterror());                       break;                   }                 }               }         });         request.executeasync();       }        private void updateviewswithprofileinfo()             {         parseuser currentuser = parseuser.getcurrentuser();         if (currentuser.has("profile"))          {           jsonobject userprofile = currentuser.getjsonobject("profile");           try            {             if (userprofile.has("name"))              {               usernameview.settext(userprofile.getstring("name"));             } else              {               usernameview.settext("no name");             }              if (userprofile.has("gender")) {               usergenderview.settext(userprofile.getstring("gender"));             } else {               usergenderview.settext("no gender");             }              if (userprofile.has("email")) {               useremailview.settext(userprofile.getstring("email"));             } else {               useremailview.settext("no email");             }            } catch (jsonexception e) {             log.d(tag, "error parsing saved user data.");           }         }          else         {             utilities.custom_toast(userdetails.this, "no profile!", "gone!", "short");         }       }        public void onlogoutclick(view v)        {         logout();       }        private void logout()        {          parseuser.logout(); // log user out         startloginactivity(); // go login view       }        private void startloginactivity()        {         intent intent = new intent(this, loginactivity.class);         intent.addflags(intent.flag_activity_clear_top);         intent.addflags(intent.flag_activity_new_task);         startactivity(intent);       } 

question:

i have tried run app new user: 1. when press login button, process , pop "user signed , logged in through facebook!" however, after logged in, turns userdetails page, reports via toast "no profile!" , ie currentuser has no info inside. going wrong here?

2. why there no permission page popup when login despite got "email" permission?

thanks lot!