javascript - 如何在 NativeScript 中从 Java 获取定义的实例/变量？

Question

我已经创建了一个插件，它使用这个 Java 插件通过 NativeScript 成功地连接和订阅了推送器 channel ，现在我正在尝试创建一个 eventListener 以获取 Nativescript 中的事件，

这是我的Java 插件:

public class PusherAndroid {

    public void connectToPusher(String app_key, String channel_name, String event_name) {

        PusherOptions options = new PusherOptions().setCluster("eu");
        Pusher pusher = new Pusher(app_key, options);

        pusher.connect(new ConnectionEventListener() {
            @Override
            public void onConnectionStateChange(ConnectionStateChange change) {
                System.out.println("State changed to " + change.getCurrentState() +
                        " from " + change.getPreviousState());
            }

            @Override
            public void onError(String message, String code, Exception e) {
                System.out.println("There was a problem connecting!");
            }
        }, ConnectionState.ALL);

        Channel channel = pusher.subscribe(channel_name);

        channel.bind(event_name, new SubscriptionEventListener() {
            @Override
            public void onEvent(PusherEvent event) {
                System.out.println("Received event with data: " + event.toString());
            }
        });

    }
}

这是我的模块:

module.exports = {
    connect:function(app_key, channel_name, event_name) {
        var psh = new com.pxb.pusherandroid.PusherAndroid();
        psh.connectToPusher(app_key, channel_name, event_name);

        var EventListener;
        function initializeEventListener() {
            if (EventListener) {
                return;
            }
            EventListener = com.pxb.pusherandroid.PusherAndroid.extend({
                interfaces: [com.pusher.client.channel.SubscriptionEventListener],
                onEvent: event => {
                    console.log(event);
                }
            });
        }

        initializeEventListener();
        <HERE I NEED MY CHANNEL>.bind(event_name, new EventListener());
    }
};

现在，我如何在 Javascript 中获取此 channel ，将其用作我定义的已连接 channel 并将 eventListener 绑定(bind)到它？

Channel channel = pusher.subscribe(channel_name);

谢谢

Answer 1

我真的不知道 NativeScript 是如何工作的，但你不能将你的 Channel 序列化为一个 json 字符串，将它存储在你的 PusherAndroid 类的全局变量中，然后然后在您的模块上访问并反序列化它？