@Override
public void onErrorResponse(VolleyError error) {
    if (error == null || error.networkResponse == null) {
        return;
    }

    String body;
    //get status code here
    final String statusCode = String.valueOf(error.networkResponse.statusCode);
    //get response body and parse with appropriate encoding
    try {
        body = new String(error.networkResponse.data,"UTF-8");
    } catch (UnsupportedEncodingException e) {
        // exception
    }

    //do stuff with the body...
}