Why login by google plus in angularjs does not work properly?

I have a mobile app and have option to log in by google plus have the controller but when I login and choose the account information are not saved me in session.set made ​​following this tuturial https://github.com/EddyVerbruggen/cordova-plugin-googleplus ve done the first step to set the android he generated a file that I made with the keytool but also do not know where I put that file but when I log not well account information that the log or ask permission .

.controller('LoginGoogle', function($http, $scope, sessionService, $ionicLoading) {
// This method is executed when the user press the "Sign in with Google" button
$scope.googleSignIn = function() {
  template: 'Aguarde...'
    function (obj) {

      userInfo = {
            user_id: obj.userId,
            nome: obj.displayName,
            user_foto: obj.imageUrl,
            //user_slug: data.user_slug



        window.location = "#/app/home"
    function (msg) {
      alert('error: ' + msg);