Issue passing context attributes to ServerResource

My application attempts to set context attributes:

    final Router router = new Router();
    router.attachDefault(HttpListener.class);

    org.restlet.Application myApp = new org.restlet.Application() {
        @Override
        public org.restlet.Restlet createInboundRoot() {
            getContext().getAttributes().put("mysharedobj", new MySharedObj());
            return router;
        };
    };
    Component component = new Component();
    component.getDefaultHost().attach("/", myApp);

    new Server(Protocol.HTTP, port, component).start();

In my HttpListener I assert the context is not null:

public class HttpListener extends ServerResource {

    public MySharedObj mysharedobj;

    public HttpListener() { }  

    @java.lang.Override
    public void init(Context context, Request request, Response response) {

        assert context != null;  // throws java.lang.AssertionError

        // my end goal is to pass a shared object to my listener
        mysharedobj = context.getAttributes().get("mysharedobj");
    }
    ...
}

However, a java.lang.AssertionError is thrown because the context is null. My end goal is to pass a shared object to my listener. Is there another way I can do this?

Where am I going wrong? Note: I'm using Restlet 2.1.7. My application always run from an android app, so no server context is available.

---

Update:

I've also tried using the Application Context:

    final Router router = new Router();
    router.attachDefault(HttpListener.class);

    Component component = new Component();

    final Context ctx = component.getApplication().getContext().createChildContext();
    ctx.getAttributes().put("mysharedobj", new MySharedObj());

    org.restlet.Application myApp = new org.restlet.Application(ctx) {
        @Override
        public org.restlet.Restlet createInboundRoot() {
            return router;
        };
    };

And ..

public HttpListener() {
    Context ctx = getApplication().getContext();
    assert ctx.getAttributes().size() > 0;  // Throws AssertionError
    ...     
}

In this approach, I am able to access the Application context, but the attributes are not set on it for some reason.

The best solution I have at the moment is to use a singleton java class with a factory method for creating my object and a singleton getter for retrieving that object, e.g.

final Router router = new Router();
router.attachDefault(HttpListener.class);

MySharedObj myobj = MySharedObj.newInstance();

org.restlet.Application myApp = new org.restlet.Application() {
    @Override
    public org.restlet.Restlet createInboundRoot() {
        return router;
    };
};
Component component = new Component();
component.getDefaultHost().attach("/", myApp);

new Server(Protocol.HTTP, port, component).start();

// in a different thread
MySharedObj myobj = MySharedObj.get();
myobj.doStuff()

and within my HttpListner:

public HttpListener() {
    MySharedObj myobj = MySharedObj.get();
    myobj.doStuff()       
    ...     
}