JsonObject example using Retrofit

AsyncTask.java

public class LocationByAddress extends AsyncTask<String, Void, String[]> {

    private LocationCallback callback;

    public LocationByAddress(LocationCallback callback) {
        this.callback = callback;
    }

    @Override
    protected String[] doInBackground(String... params) {
        //TODO this vallidation is pointless we have to make sure the texts are not empty, this texts come from and edit text, so worst case scenario is empty text ""
        if (params.length > 0) {
            String address = "";
            for (String param : params) {
                address = param+", ";
            }
            GeoGet geoGet = new GeoInterceptor().getInterceptor();
            Map<String, String> queryMap = new HashMap<>();
            queryMap.put("address", address);
            queryMap.put("sensor", "true");
            Call<JsonObject> jsonObjectCall = geoGet.get(queryMap);
            try {
                Response<JsonObject> response = jsonObjectCall.execute();
                JsonObject mainObject = response.body();
                if (response.isSuccessful() && mainObject.get("status").toString().equals("\"OK\"")) {
                    JsonArray results = mainObject.getAsJsonArray("results");
                    JsonObject innerResult = (JsonObject) results.get(0);
                    JsonObject geometry = (JsonObject) innerResult.get("geometry");
                    JsonObject location = (JsonObject) geometry.get("location");
                    String lat = location.get("lat").toString();
                    String lng = location.get("lng").toString();
                    String[] coordinates = {lat, lng};
                    return coordinates;
                } else {
                    callback.fail();
                    return null;
                }

            } catch (IOException e) {
                e.printStackTrace();
                callback.fail();
                return null;
            }

        } else {
            callback.noAddress();
            return null;
        }
    }

    @Override
    protected void onPostExecute(String[] strings) {
        if (strings != null) {
            callback.success(strings[0], strings[1]);
        }
    }
}

Interceptor.java

public class GeoInterceptor {

    private static final String BASE_URL = "http://maps.googleapis.com/maps/";

    public GeoGet getInterceptor() {
        Retrofit interceptor = new Retrofit.Builder()
                .baseUrl(BASE_URL)
                .addConverterFactory(GsonConverterFactory.create())
                .build();
        GeoGet geoGet = interceptor.create(GeoGet.class);
        return geoGet;
    }
}

Interface.java

public interface GeoGet {

    @GET("api/geocode/json")
    Call<JsonObject> get(@QueryMap Map<String, String> map);

}