Google+ Sign-In on Android Studio- GoogleAuthException: BadUsername -

after sign-in succeeds can't retrieve profile information , keep getting error on googleauthutil.gettoken() method.

the error:

com.google.android.gms.auth.googleauthexception: badusername 

on android client id inferred automatically combination of android package name, , sha-1 fingerprint of signing key in developers console project. matched package name , tried of debug.keystore have on workstation. nothing worked.

*the consent screen set (!) does't appear.

the whole working fragment:

public class googleplusactivity extends fragment implements connectioncallbacks, onconnectionfailedlistener {  private static final string tag = "signinactivity";  // magic number use know sign-in error // resolution activity has completed. private static final int request_resolve_error = 9000;  // core google+ client. private googleapiclient mgoogleapiclient;  // flag stop multiple dialogues appearing user. private boolean mresolvingerror;  //token  protected string mtoken;  @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     log.i(tag, "create");      plus.plusoptions options = new plus.plusoptions.builder()       .addactivitytypes("http://schemas.google.com/addactivity",         "http://schemas.google.com/reviewactivity")       .build();      mgoogleapiclient = new googleapiclient.builder(this.getactivity())       .addapi(plus.api, options)       .addconnectioncallbacks(this)       .addonconnectionfailedlistener(this)       .build();      // use mresolveonfail flag whether should trigger     // resolution of connectionfailed connectionresult.     mresolvingerror = false;     log.i(tag, "signing in..."); }  @override public void onstart() {     super.onstart();     log.i(tag, "start");     // every time start want try connect. if     // succeeds we'll onconnected() callback. if     // fails we'll onconnectionfailed(), result!     if (!mresolvingerror)     {         mgoogleapiclient.connect();     } }  @override public void onstop() {     super.onstop();     // can little costly keep connection open     // google play services, each time our activity     // stopped should disconnect.     log.i(tag, "stop");     mgoogleapiclient.disconnect(); }  @override public void onconnectionfailed(connectionresult result) {     log.i(tag, "connectionfailed : " + result.tostring());      if (mresolvingerror) {         // attempting resolve error.         return;     } else if (result.hasresolution()) {         try {             mresolvingerror = true;             result.startresolutionforresult(this.getactivity(), request_resolve_error);         } catch (sendintentexception e) {             // there error resolution intent. try again.             mgoogleapiclient.connect();         }     } else {         // show dialog using googleplayservicesutil.geterrordialog()         log.i(tag,"error num- " + result.geterrorcode());         mresolvingerror = true;     }   }  //string scope = "oauth2:" + scopes.plus_login; //plus.accountapi.getaccountname(mgoogleapiclient) @override public void onconnected(bundle bundle) {     log.i(tag, "connected.");      // turn off flag, if user signs out they'll have     // tap sign in again.     mresolvingerror = false;      if(mtoken == null || mtoken.isempty())     {         // retrieve oauth 2.0 access token.         final context context = this.getactivity();          final string scope = "oauth2:"+ scopes.plus_login;          asynctask<void, void, string> task = new asynctask<void, void, string>() {             @override             protected string doinbackground(void... params) {                 string token = null;                  try {                     token = googleauthutil.gettoken(                             context,                             plus.accountapi.getaccountname(mgoogleapiclient),                             scope);                 } catch (ioexception transientex) {                     // network or server error, try later                     log.e(tag, transientex.tostring());                 } catch (userrecoverableauthexception e) {                     // recover (with e.getintent())                     log.e(tag, e.tostring());                     intent recover = e.getintent();                     startactivityforresult(recover, request_resolve_error);                 } catch (googleauthexception authex) {                     // call not ever expected succeed                     // assuming have verified                      // google play services installed.                     log.e(tag, authex.tostring());                 }                  return token;         }          @override         protected void onpostexecute(string token) {             mtoken = token;             toast.maketext(context, "googletoken: "+ token, toast.length_long).show();                  log.v(tag, "access token retrieved:" + token);         }      };     task.execute();     } }  public void ondisconnected() {      log.i(tag, "disconnected."); }  public void onactivityresult(int requestcode, int responsecode, intent intent) {     log.i(tag, "activityresult: " + requestcode);     if (requestcode == request_resolve_error) {         mresolvingerror = false;         if (responsecode == googleplusactivity.cause_service_disconnected) {             // make sure app not connected or attempting connect             if (!mgoogleapiclient.isconnecting() && !mgoogleapiclient.isconnected()) {                 mgoogleapiclient.connect();             }         }     } }  @override public void onconnectionsuspended(int arg0) {     // onconnectionsuspended     log.i(tag, "onconnectionsuspended."); } } 

what doing wrong?

can post return value plus.accountapi.getaccountname(mgoogleapiclient)?

also make sure have in manifest:

<uses-permission android:name="android.permission.get_accounts" />