尝试发送时，Android JSONObject变为null

Question

When I'm trying to push a JSONObject over a data stream, and I've built the JSONObject properly, but then I try and publish it to the stream it is null.

JSONObject position = new JSONObject();

        try {
            position.put("lat", location.getLatitude());
            position.put("lng", location.getLongitude());
        } catch (JSONException e) {
            System.out.println("json not work");
            e.printStackTrace();
        }
        System.out.println(position) //result: {"lat":37,"lng":-122}
        pubNub.publish().message(position)//never sent, if other type it works

Answer 1

尝试pubNub.publish().message(position.toString());