How do I write a script to get this data from the FCC?

public static final String TAG = MainActivity.class.getSimpleName();
private RadioData mRadioData;

private GoogleApiClient mGoogleApiClient;
private Location mLastLocation;

TextView latitudeLabel;
TextView longitudeLabel;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.list_content);


    double latitude = 32;
    double longitude = -96;
    final RadioData[] mRadioData = new RadioData[1];
    String radioFinderURL = "http://data.fcc.gov/lpfmapi/rest/v1/lat/" + latitude + "/long/" + longitude + "?format=json&secondchannel=true";

    OkHttpClient client = new OkHttpClient();
    Request request = new Request.Builder()
            .url(radioFinderURL)
            .build();
    Call call = client.newCall(request);
    call.enqueue(new Callback() {
        @Override
        public void onFailure(Request request, IOException e) {

        }

        @Override
        public void onResponse(Response response) throws IOException {
            try {
                String jsonData = response.body().string();
                Log.v(TAG,jsonData);
                if (response.isSuccessful()) {
                    mRadioData[0] = getCurrentDetails(jsonData);

                }

            } catch (IOException e) {
                Log.e(TAG, "Exception Caught: ", e);
            }
            catch(JSONException e){
                Log.e(TAG, "Exception Caught:", e);
            }
        }
    });

}

private RadioData getCurrentDetails(String jsonData) throws JSONException {
    JSONObject radioData = new JSONObject(jsonData);
    String callSign = radioData.getString("callsign");
    Log.i(TAG, "From JSON: " + callSign);

    JSONObject currently = radioData.getJSONObject("frequency");
    RadioData radioFinder = new RadioData();


        return new RadioData();


}

protected synchronized void buildGoogleApiClient() {
    mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener((GoogleApiClient.OnConnectionFailedListener) this)
            .addApi(LocationServices.API)
            .build();


}


@Override
public void onConnected(Bundle bundle) {
    mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
            mGoogleApiClient);
    if (mLastLocation != null) {
        latitudeLabel.setText(String.valueOf(mLastLocation.getLatitude()));
        longitudeLabel.setText(String.valueOf(mLastLocation.getLongitude()));
    }
}


@Override
public void onConnectionSuspended(int i) {

}