json array를 double array로 변환 질문 드립니다

Question

웹 서버에 이런 형태의 데이터가 있습니다.

{"result":[{"latitude":"37.583560","longitude":"127.011081","time":"18:00:00"},{"latitude":"37.583449","longitude":"127.011081","time":"18:01:00"},{"latitude":"37.583143","longitude":"127.011113","time":"18:02:00"},{"latitude":"37.582795","longitude":"127.011167","time":"18:03:00"},{"latitude":"37.582395","longitude":"127.011253","time":"18:04:00"}]}

이 데이터를 각각 위도배열, 경도 배열로 변환하려고 합니다ㅠㅠ

double pointY[]={127.011016,127.011081,127.011113,127.011167,127.011253,127.010480}; <-longitude
double pointX[]={37.583560,37.583449,37.583143,37.582795,37.582395,37.582301}; <- latitude

이런식으로요.... 

코드를 짜봤는데 뭐가 틀린지 모르겠습니다 ㅠㅠ

도와주세요 ㅠㅠ

 

    String myJSON;
    private static final String TAG_RESULTS = "result";
    private static final String TAG_latitude = "latitude";
    private static final String TAG_longitude = "longitude";
    JSONArray peoples = null;

 

try {
                    JSONObject jsonObj = new JSONObject(myJSON);
                    peoples = jsonObj.getJSONArray(TAG_RESULTS);

                    List<String> latList = new ArrayList<String>();
                    List<String> lngList = new ArrayList<String>();

                    for (int i = 0; i < peoples.length(); i++) {
                        JSONObject c = peoples.getJSONObject(i);

                        lngList.add(c.getString(TAG_longitude));
                        latList.add(c.getString(TAG_latitude));
                    }

                    double[] pointX = new double[latList.size()];
                    for (int j =0;j<latList.size();j++){

                        pointX[j] = Double.parseDouble(latList.get(j));
                    }

                    double[] pointY = new double[lngList.size()];
                    for (int j =0;j<lngList.size();j++){

                        pointY[j] = Double.parseDouble(lngList.get(j));
                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                }

            }