Using resolve in $routeProvider causes 'Unknown provider ...'

I am trying to do an asynchronous http request to load some data before my app loads and so I am using a resolve in $routeProvider which is an http request in my MainController. For some reason, I keep getting Error: [$injector:unpr] Unknown provider: appDataProvider <- appData where appData is where I do my http request. I am using AngularJS v 1.2.5.

Here is the code and two methods that I tried that both give the same error:

Method #1

MainController.js

var MainController = ['$scope','$location','appData',
    function($scope, $location, appData){
       console.log(appData.data);
    }
];

MainController.loadData = {
    appData: function($http, $location, MainFactory){
        var aid = MainFactory.extractAid($location);
        return $http({method: 'GET', url: URL_CONST + aid});
    }
};

app.js

var app = angular.module('HAY', ['ngRoute']);

app.config(function($routeProvider) {
  $routeProvider
    .when('/', {
      redirectTo: '/pages/alerts'
    })
    .when('/pages/:pageName', {
        templateUrl: function(params) {
            return 'views/pages/' + params.pageName + '.html';
        },
        controller: MainController,
        resolve: MainController.loadData
    })
    .otherwise({
        redirectTo: '/pages/alerts'
    });
});

I tried changing the name in case it was a conflicting system reserved keyword but with no luck. For some reason, appData is never recognized

Method #2 I also tried changing it around like so:

app.js

var app = angular.module('HEY', ['ngRoute']);

app.config(function($routeProvider) {
  $routeProvider
    .when('/', {
      redirectTo: '/pages/alerts'
    })
    .when('/pages/:pageName', {
        templateUrl: function(params) {
            return 'views/pages/' + params.pageName + '.html';
        },
        controller: MainController,
        resolve: {
                appData: ['$http', '$location','MainFactory', function($http, $location, MainFactory) {
                    var aid = MainFactory.extractAid($location);
                    return $http({method: 'GET', url: URL_CONST + aid});
                }]
        }
    })
    .otherwise({
        redirectTo: '/pages/alerts'
    });
});

MainController.js

var MainController = ['$scope','$location','appData',
    function($scope, $location, appData){
        console.log(resolvedData);
    }
];

However, the result was exactly the same. Does this have something to do with angular 1.2.5 ?

Here is a working version from someone else

http://mhevery.github.io/angular-phonecat/app/#/phones

And here is the code:

function PhoneListCtrl($scope, phones) {
  $scope.phones = phones;
  $scope.orderProp = 'age';
}

PhoneListCtrl.resolve = {
  phones: function(Phone) {
    return Phone.query();
  },
  delay: function($q, $defer) {
    var delay = $q.defer();
    $defer(delay.resolve, 1000);
    return delay.promise;
  }
}

angular.module('phonecat', ['phonecatFilters', 'phonecatServices', 'phonecatDirectives']).
  config(['$routeProvider', function($routeProvider) {
    $routeProvider.
        when('/phones', {templateUrl: 'partials/phone-list.html', controller: PhoneListCtrl, resolve: PhoneListCtrl.resolve}).
        otherwise({redirectTo: '/phones'});
  }]);