android - Getting headers from a response in volley

Question

I am working with Volley, I want to make request to a server which returns me a JSON in the "vissible layer" (I can see it in the web browser). My problem is that the server also returns my in the headers information that I need to get in my App, but I am not able to get the headers from the request.

I have searched a long time but I havent found anything usefull (Onlye adding data to the request Header, but not getting data from the header′s response)

Anyone knows how to implement that?

Answer 1

To get the headers you need to override parseNetworkResponse() in your request.

for example the JsonObjectRequest:

public class MetaRequest extends JsonObjectRequest {

    public MetaRequest(int method, String url, JSONObject jsonRequest, Response.Listener
            <JSONObject> listener, Response.ErrorListener errorListener) {
        super(method, url, jsonRequest, listener, errorListener);
    }

    public MetaRequest(String url, JSONObject jsonRequest, Response.Listener<JSONObject>
            listener, Response.ErrorListener errorListener) {
        super(url, jsonRequest, listener, errorListener);
    }

    @Override
    protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
        try {
            String jsonString = new String(response.data,
                    HttpHeaderParser.parseCharset(response.headers, PROTOCOL_CHARSET));
            JSONObject jsonResponse = new JSONObject(jsonString);
            jsonResponse.put("headers", new JSONObject(response.headers));
            return Response.success(jsonResponse,
                    HttpHeaderParser.parseCacheHeaders(response));
        } catch (UnsupportedEncodingException e) {
            return Response.error(new ParseError(e));
        } catch (JSONException je) {
            return Response.error(new ParseError(je));
        }
    }
}