JSON parsing untuk Tweet

//lib JSON didownload di: http://code.google.com/p/json-simple/
//cara memasukkan lib ke project android: http://stackoverflow.com/questions/3642928/adding-a-library-jar-to-an-eclipse-android-project

public ArrayList<TweetData> parser(String resBody) throws Exception {
        ArrayList<TweetData> alTweet = new ArrayList<TweetData>();
        JSONObject jsonObject = null;
        JSONParser parser=new JSONParser();
        try {
            Object obj = parser.parse(resBody);
            jsonObject=(JSONObject)obj;
          }catch(Exception ex){
            Log.e("yw","Exception parser: " + ex.getMessage());
          }
          JSONArray arr = null;
          try {
            Object j = jsonObject.get("results");
            arr = (JSONArray)j;
          } catch(Exception ex){
            Log.e("yw","Exception ambil result tweets: " + ex.getMessage());
          }

          if (arr!=null) {
              for(Object t : arr) {
                    TweetData td=null;
                    try {
                        td = new TweetData(
                          ((JSONObject)t).get("from_user").toString(),
                          ((JSONObject)t).get("text").toString(),
                          ((JSONObject)t).get("created_at").toString(),""
                        );
                    } catch (ParseException e) {
                        Log.e("yw","Exception ambil detil tweet: " + e.getMessage());
                    }
                    alTweet.add(td);
              }
          } else
          {
              Log.e("yw","kosong: "+resBody);
              throw new Exception();
          }
       return alTweet;
   }