AngularJS $ rootScope。$ broadcast在app.run中不起作用

你总是要有一个比赛条件。我可以选择几种替代方法：

1）使用服务。我并不是这个选项的忠实支持者，因为它会导致产生Spaghetti代码。大多数情况下，您不希望控制器在登录之前运行。我喜欢选项2。

 myApp.run(['AuthDataSvc', '$rootScope', function (AuthDataSvc, $rootScope) {        AuthDataSvc.getAuth(); }]);if(AuthDataSvc.isLoggedIn()){      //do something.}

2）使用route.resolve。解析是在路由上定义的，并且只有在将诺言设置为已解析后，Controller才会加载。我为您展示了一个示例

ui-router

ng-route

ui-router

var waitForLogon = {      UserToken: ["AuthDataSvc", function (AuthDataSvc) {         return AuthDataSvc.logon();      }]};//this is for ng-route $routeProvider   .when('/Book/:bookId', {      templateUrl: '--',      controller: 'MyCtrl',      resolve: waitForLogon   })//this is for ui-router $stateProvider     .state('me', { templateUrl: '--', controller: 'MeCtrl', resolve: waitForLogon })

 angular.module('yourapp')    .controller('MyCtrl', ["UserToken", ... , function(UserToken){       //User Token will always be here when your Ctrl loads.   });

angular.module('yourapp')    .service('AuthDataSvc', ["LogonModel", "$q", function(LogonModel, $q) {        this._q = null;        var that = this;        this._doAuth = function(){this.getAuth().then(function(Token){ that._q.resolve(Token) }, function(error){that._q.reject(error);}        };        this.logon = function () { if(!this._q){   this._q = $q.defer();    this._doAuth();// <-current auth do here, and resolve this._q when done } return this._q.promise;        };    });