Android : How to correctly parse Reddit API in Android

So I've been trying to parse Reddits r/hot/.json API to get a list view of topic information but I cant seem to get my JSON right. I've looked everywhere and I cant seem to find a good example on how to do this for reddit. Here is what I have so far..

try {
       JSONArray hotTopics = new JSONArray(result);
        for(int i=0; i<hotTopics.length(); i++) {
            JSONObject topic = hotTopics.getJSONObject(i);
            String title = topic.getString("title");
            String author = topic.getString("author");
            String imageUrl = topic.getString("thumbnail");
            String postTime = topic.getString("created_utc");
            String rScore = topic.getString("score");

            topicdata.add(new ListData(title, author, imageUrl, postTime, rScore));
        }

    } catch (JSONException e) {
        e.printStackTrace();
    }