AsyncTask Example

    private class LocTask extends AsyncTask<Double, Void, List<Address>> {

        @Override
        protected List<Address> doInBackground(Double... params) {
            try {
                return geoCoder.getFromLocation(params[0], params[1], 1);
            } catch (IOException e) {
                e.printStackTrace();
                return null;
            }
        }

        @Override
        protected void onPostExecute(List<Address> result) {
            locationChanged(result);
        }
    }

    @Override
    public void onLocationChanged(Location loc) {
        mylat = loc.getLatitude();
        mylong = loc.getLongitude();

        new LocTask().execute(mylat, mylong);
    }

    public void locationChanged(List<Address> addresses) {
        // do stuff (if addresses != null)
    }