public class FetchAddressTask extends AsyncTask<Location, Void, String>
{

    private Context mContext;
    private OnTaskCompleted mListener;

    interface OnTaskCompleted{
        void onTaskCompleted(String result);
    }

    FetchAddressTask(Context context, OnTaskCompleted listener){
        mContext = context;
        mListener = listener;
    }


    @Override
    protected String doInBackground(Location... locations) {
        Geocoder geocoder = new Geocoder(mContext, Locale.getDefault());
        Location location = locations[0];
        List<Address> addresses = null;
        String resultMessage = "";
        try {
            addresses = geocoder.getFromLocation(
                    location.getLatitude(),
                    location.getLongitude(), 1); //1 banyaknya hasil

        } catch (IOException e) {
            resultMessage = "Service not available";
        }

        if(addresses == null || addresses.size() == 0){
            resultMessage = "No Address Found";
        }else{
            Address addres = addresses.get(0);
            ArrayList<String> addresPart = new ArrayList<>();
            for (int i = 0; i < addres.getMaxAddressLineIndex(); i++) {
                addresPart.add(addres.getAddressLine(i));
            }

            resultMessage = TextUtils.join("\n",addresPart);

        }
        return  resultMessage;
    }

    @Override
    protected void onPostExecute(String s) {
        mListener.onTaskCompleted(s);
    }
}