Jestem całkiem nowy w AngularJS. Kiedy dzwonię$http.get dostałem$http is not defined błąd.

Oto treść mojego modułu:

var demoApp = angular.module('demoApp', []);

demoApp.config(function ($routeProvider) {
    $routeProvider.
        when('/view1',
        {
            controller: 'SimpleController',
            templateUrl: 'View1.html'
        }).
        when('/view2',
        {
            controller: 'SimpleController',
            templateUrl: 'View2.html'
        })
        .otherwise({ redirectTo: '/view1' });
});

demoApp.factory('simpleFactory', function () {

    var factory = {};
    factory.getAnnounces = function ($http) {
        $http.post("http://localhost:57034/Announce/GetAllAnnounces")
           .success(function (data, status, headers, config) {
               return data;
           }).error(function (data, status, headers, config) {
               return status;
           });
           };
    return factory;
});

demoApp.controller('SimpleController', function ($scope,simpleFactory) {

    $scope.announces = [];
    init();
    function init()
    {
        $scope.announces= simpleFactory.getAnnounces();
    }

});

Czego mi tu brakuje? Twoje zdrowie.