$cordovaOauth.facebook("886730451383253", ["email"]).then(function(response) {
            console.log('access token : '+response.access_token);
            $http
            .post(domain+'/api/facebook/login?access_token='+access_token.key, response.access_token)
            .then(function(response){
                console.log('Api called');
                //$ionicLoading.hide();
                if(response.error_status == false){
                    $localStorage.setObject('identity_token', response.user.api_key);
                    $location.path( "/" );
                }
                else{
                    $scope.error = response.error;
                }
            });
        }, function(error) {
            alert(error);
        });