在AngularJS中自动创建服务实例(无延迟加载)

I've created a service that needs to listen for $route events. I'm setting listeners with $rootScope.$on(). My service looks like this:

我创建了一个需要侦听$route事件的服务。我用$rootScope设置监听器，$on()。我的服务是这样的:

application.factory('myListener', ['$rootScope', function ($rootScope) {
    $rootScope.$on('$routeChangeStart', myListener.onChangeStart);
    return {
        onChangeStart: function() {
            // Do something.
        }
    };
}]);

It works OK, but I have to inject instance of this service at least once somewhere in my application in order for listener to attach itself.

它可以正常工作，但是我必须在应用程序中至少有一次注入这个服务的实例，以便侦听器附加自己。

Is there a way to force-create the instance without injecting it somewhere?

有没有一种方法可以强制创建实例而不将其注入到某个地方?

Maybe you could recommend a better way to structure this service?

也许你可以推荐一种更好的方式来构建这个服务?

Thank you.

谢谢你！

2 个解决方案

#1

If you don't need the service, but rather some code that runs when the application starts, then you should put it into a run block:

如果您不需要该服务，而是需要一些应用程序启动时运行的代码，那么您应该将其放入运行块中:

application.run(['$rootScope', function($rootScope) {
    $rootScope.$on('$routeChangeStart', function() {
        // Do something.
    });
}]);

#2

angular.injector().get('myListener'); should give you the instance of the service.

angular.injector(). get(“myListener”);应该给您服务的实例。

#1