android - Quick Unresolved Class Issue -

i error on line 80 (userfunction.logoutuser(getapplicationcontext());) says userfunction cannot resolved. have defined userfunction , have tried use full package name , things, can rid of error quick? (asked question future reference since happens lot) thanks!

package com.example.dashboardactivity;  import libary.userfunctions;  import org.json.jsonexception; import org.json.jsonobject;  import android.app.activity; import android.content.intent; import android.os.asynctask; import android.os.bundle; import android.util.log; import android.view.view; import android.widget.button; import android.widget.edittext; import android.widget.textview;  public class loginactivity extends activity { public final string tag = "loginactivity"; button btnlogin; button btnlinktoregister; edittext inputemail; edittext inputpassword; textview loginerrormsg;  // json response node names private static string key_success = "success"; private static string key_error = "error"; private static string key_error_msg = "error_msg"; private static string key_uid = "uid"; private static string key_name = "name"; private static string key_email = "email"; private static string key_created_at = "created_at";  @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.login);      // importing assets buttons, text fields     inputemail = (edittext) findviewbyid(r.id.loginemail);     inputpassword = (edittext) findviewbyid(r.id.loginpassword);     btnlogin = (button) findviewbyid(r.id.btnlogin);     btnlinktoregister = (button) findviewbyid(r.id.btnlinktoregisterscreen);     loginerrormsg = (textview) findviewbyid(r.id.login_error);      // login button click event     log.i(tag, "loginactivity login button click event" );     btnlogin.setonclicklistener(new view.onclicklistener() {          public void onclick(view view) {             new asynctask<string, void, jsonobject>(){                 @override                 protected jsonobject doinbackground(string... args) { //this run on background thread                     string email = args[0];                     string password = args[1];                     userfunctions userfunction = new userfunctions();                     jsonobject json = userfunction.loginuser(email, password);                     return json;                 }                  @override                 protected void onpostexecute(jsonobject json) { //this run on ui thread                     if(json != null){                         //... update user interface ...                          log.i(tag, "checking login response");                          // check login response                          try {                              if (json.getstring(key_success) != null) {                                  loginerrormsg.settext("");                                  string res = json.getstring(key_success);                                   if(integer.parseint(res) == 1){                                      // user logged in                                      // store user details in sqlite database                                      libary.databasehandler db = new libary.databasehandler(getapplicationcontext());                                      jsonobject json_user = json.getjsonobject("user");                                       // clear previous data in database                                       userfunction.logoutuser(getapplicationcontext());                                      db.adduser(json_user.getstring(key_name), json_user.getstring(key_email), json.getstring(key_uid), json_user.getstring(key_created_at));                                                              // launch dashboard screen                                      intent dashboard = new intent(getapplicationcontext(), dashboardactivity.class);                                      // close views before launching dashboard                                      dashboard.addflags(intent.flag_activity_clear_top);                                      startactivity(dashboard);                                      // close registration screen                                      finish();                                   }else{                                      // error in login                                      loginerrormsg.settext("incorrect username/password");                                  }                              }                          } catch (jsonexception e) {                              e.printstacktrace();                          }                      }                       else{                         log.e("logintask", "no login response received");                     }                     super.onpostexecute(json);                 }              }.execute(inputemail.gettext().tostring(), inputpassword.gettext().tostring());         }     });       // link register screen     log.i(tag, "loginactivity btnlinktoregister" );     btnlinktoregister.setonclicklistener(new view.onclicklistener() {          public void onclick(view view) {             intent = new intent(getapplicationcontext(),                     registeractivity.class);             startactivity(i);             finish();         }     }); } } 

you've defined userfunctions userfunction = new userfunctions(); inside doinbackground method trying access variable in onpostexecute.

try declare userfunctions userfunction; outside doinbackground accessible other functions.

new asynctask<string, void, jsonobject>(){          userfunctions userfunction;         @override         protected jsonobject doinbackground(string... args) { //this run on background thread             userfunction = new userfunctions();          }          @override         protected void onpostexecute(jsonobject json) {              userfunction.logoutuser(getapplicationcontext());          } }