How to get error message description using Volley

The data field of networkResponse is a JSON string of the form:

{"response":false,"msg":"Old Password is not correct."}

So you need to get the value corresponding to "msg" field, like this (ofcourse with all exception catching):

String responseBody = new String(error.networkResponse.data, "utf-8");
JSONObject data = new JSONObject(responseBody);
String message = data.optString("msg");

Tested with Volley 1.1.1

Try with this custom method:

public void parseVolleyError(VolleyError error) {
        try {
            String responseBody = new String(error.networkResponse.data, "utf-8");
            JSONObject data = new JSONObject(responseBody);
            JSONArray errors = data.getJSONArray("errors");
            JSONObject jsonMessage = errors.getJSONObject(0);
            String message = jsonMessage.getString("message");
            Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
        } catch (JSONException e) {
        } catch (UnsupportedEncodingException errorr) {
        }
    }

It will show toast with error message from the request. Call this in onErrorResponse method in your volley request:

new Response.ErrorListener() {
                        @Override
                        public void onErrorResponse(VolleyError error) {
                           parseVolleyError(error);
                        }
                    }

IMO, you should override parseNetworkError as below:

@Override
protected VolleyError parseNetworkError(VolleyError volleyError) {
    String json;
    if (volleyError.networkResponse != null && volleyError.networkResponse.data != null) {
        try {
            json = new String(volleyError.networkResponse.data,
                    HttpHeaderParser.parseCharset(volleyError.networkResponse.headers));
        } catch (UnsupportedEncodingException e) {
            return new VolleyError(e.getMessage());
        }
        return new VolleyError(json);
    }
    return volleyError;
}

Then, inside onErrorResponse(VolleyError error), you can use Log.e(LOG_TAG, error.toString()); for example. Hope it helps!

you have to override parseNetworkError and deliverError methods and you can get errormessage from them.