How to execute a function after Angularjs perform all get/post requests?

Question

I need to call a Function after all get/post requests are completed. Note: I cannot call this function several times!

        angular
        .module('app.services')
        .config(InterceptorConfig)
        .service('InterceptorService', InterceptorService);

    function InterceptorConfig($httpProvider) {
        $httpProvider.interceptors.push('InterceptorService');
    }

    InterceptorService.$inject = ['$q', '$rootScope', 'Constants'];

    function InterceptorService($q, $rootScope, Constants) {
      return {
        request: function(config) {
            ##########################

            NÃO POSSO CHAMAR AQUI  

            ########################## 
            if (config.method === 'POST' && !config.file) {
                config.headers["Content-Type"] = "application/json";
            }

            if (!config.notloader) {
                $rootScope.$broadcast("loader_show");
            }
            return config || $q.when(config);
        }

Answer 1

You can use the return in "Success" to execute something in case of success or even load an error with the return "error" of an http call. Follow the simple example:

$http.get('').success(functional(retorno){
  //Faz algo caso de sucesso
}).error(function(msg){
  //Escreve o erro
});
});

Answer 2

You can use events to send a "loading:finished" event, for example, and put a $Scope into a Controller or Directive "listening/Listening" that event and run when the event happens.

angular.module('app.services').factory('InterceptorService', ['$q', '$rootScope',
    function ($q, $rootScope) {
        var loadingCount = 0;

        return {
            request: function (config) {
                if (++loadingCount === 1) $rootScope.$broadcast('carregando:andamento');
                return config || $q.when(config);
            },

            response: function (response) {
                if(--loadingCount === 0) $rootScope.$broadcast('carregando:finalizado');
                return response || $q.when(response); 
            },

            responseError: function (response) {
                if(--loadingCount === 0) $rootScope.$broadcast('carregando:erro');
                return $q.reject(response);
            }
        };
     }
 ]).config(['$httpProvider', function ($httpProvider) {
     $httpProvider.interceptors.push('InterceptorService');
}]);

Example using a Directive:

.directive("loader", function ($rootScope) {
    return function ($scope, element, attrs) {
        $scope.$on("carregando:finalizado", function () {
            // chamar uma function aqui - todas requisições get/post foram finalizadas
        });
    };
});

Using a Controller

$scope.$on('carregando:finalizado', function (){
     // chamar uma function aqui - todas requisições get/post foram finalizadas
});