login_ctrl.js

  loginCtrl.facebook = function () {
    $cordovaOauth.facebook("MINHA_CHAVE", ['email']).then(function (result) {

      displayData(result.access_token);
      
    }, function (error) {
      console.log(JSON.stringify(error))
    });
  };

  function displayData(access_token) {

    $ionicLoading.show({
      template: '<ion-spinner></ion-spinner>'
    });

    $http.get("https://graph.facebook.com/v2.5/me", {
      params: {
        access_token: access_token,
        fields: 'name, email',
        format: "json"
      }
    }).then(function (result) {

      var nome = __resolveName(result.data.name);

      var dados = {
        nome: nome[0],
        sobrenome: nome[1],
        email: result.data.email,
        token: access_token
      };

      User.createUser('facebook', dados).then(function (data) {
        __createLocalStorage(data);
        $ionicLoading.hide();
        $state.go('app.home');

      }, function (error) {
        $ionicLoading.hide();
        $ionicPopup.alert({
          title: "Error!",
          template: error
        });

      });

    }, function (error) {
      alert("Error: " + JSON.stringify(error));
    });
  }