facebook嵌入式视频api还支持removeListener（）吗？

Question

根据facebook文档 - https://developers.facebook.com/docs/plugins/embedded-video-player/api，我们订阅了玩家活动

    var handleDesktopEvents = function (msg) {
        if (msg.type === 'video') {
            var player = msg.instance;
            var playHandler = player.subscribe('startedPlaying', function() {
                // Video started playing ...
                player.unmute();
                console.log('detected video playing');
                ga_virtual_pagehit(msg.id);
                console.log('sent event to GA');
                playHandler.removeListener('startedPlaying');
                // playHandler.release();
            });
            console.log('detected video ready');
            player.play();
            FB.Event.unsubscribe('xfbml.ready', handleDesktopEvents, handleDesktopEx);
        }
    };
    var  handleDesktopEx = function () {
        // Handle pause() and exceptions
        console.log('detected pause');
    };

    FB.Event.subscribe('xfbml.ready',  handleDesktopEvents, handleDesktopEx);

removeListener()返回的令牌似乎无法subscribe()。使用调试器，我们可以看到令牌上有一个方法release()。应该用吗？现在是官方的吗？

我做错了吗？

Answer 1

除非FB再次改变了一些东西，否则可能仍然存在，即释放（）方法。它执行removeListen（）应该做的事情。