printing an string array to listview

package com.fyp.khursani;


import java.util.ArrayList;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import org.apache.http.NameValuePair;

import test.fyp.khursani.library.JSONParser;

import com.fyp.khursani.activity.SingleListItem;

import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.ListFragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

public class ViewDishes extends ListFragment {

    JSONParser jsonParser = new JSONParser();
    private static String url_menu = "http://192.168.56.1/khursaani/get_menu_details.php";

    // JSON Node names
    private static final String TAG_SUCCESS = "success";
    private static final String TAG_PID = "pid";
    private static final String TAG_NAME = "menuItemName";
    private static final String TAG_PRICE = "menuItemPrice";
    private static final String TAG_DESC = "menuItemDescription";
    private static final String TAG_UNIT = "menuItemUnit";
    private static final String TAG_IMG = "menuItemImage";
    private static final String TAG_MENU = "menu";

    //progress dialogue

    private ProgressDialog pDialog;

    JSONArray events = null;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.fragment_viewdishes, container, false);

        // storing string resources into Array
        //            String[] adobe_products = getResources().getStringArray(R.array.adobe_products);

        // Binding resources Array to ListAdapter
        //        this.setListAdapter(new ArrayAdapter<String>(getActivity(), R.layout.fragment_viewdishes, R.id.label, adobe_products));
        new asyncmenu().execute();
        return rootView;
    }

    class asyncmenu extends AsyncTask<String, String, String[]> {

        protected void onPreExecute() {
            super.onPreExecute();
        }

        protected String[] doInBackground(String... params) {
            ArrayList<NameValuePair> postparameters2send = new ArrayList<NameValuePair>();
            JSONObject json = jsonParser.makeHttpRequest(url_menu, "POST", postparameters2send);

            Log.d("response from php", json.toString());

            int status = 0;
            try {

                int success = json.getInt(TAG_SUCCESS);
                JSONArray menu = null;
                menu = json.getJSONArray(TAG_MENU);
                String[] menuarray = new String[100];

                for (int i = 0; i < menu.length(); i++) {
                    JSONObject c = menu.getJSONObject(i);
                    menuarray[i] = c.getString(TAG_NAME);
                    Log.d("menu", menuarray[i]);
                }

                return menuarray;
            } catch (JSONException e) {
                e.printStackTrace();
            }
            String[] menuarray = new String[10];
            return menuarray;
        }


        protected void onPostExecute(String[] result) {
            Log.d("onPostExecute", result[0]);

            ViewDishes.this.setListAdapter(new ArrayAdapter<String>(getActivity(), R.layout.fragment_viewdishes, R.id.label, result));

        }
    }

}

In this file above , there was previously an array R.array.adobe_products which looked like this :

String[] adobe_products = getResources().getStringArray(R.array.adobe_products);

xml file :

<?xml version="1.0" encoding="utf-8"?>
<resources>

<string-array name="adobe_products">
    <item>Tandoori Chicken</item>
    <item>Chicken Tikka</item>
    <item>Sheikh Kebab</item>
    <item>Tandoori Prawn</item>
    <item>Chicken Curry</item>
    <item>Chicken Do Pizza</item>
    <item>Nepal Ice</item>
    <item>Corona Beer</item>
    <item>Coca Cola</item>
    <item>Ginger Ale</item>
    <item>Vanilla Ice Cream</item>
    <item>Mango Melba</item>
    <item>Masala Chai</item>
</string-array>

</resources>

This was output to listfragment like this:

 this.setListAdapter(new ArrayAdapter<String>(getActivity(), R.layout.fragment_viewdishes, R.id.label, adobe_products));

I now have an array of strings named result (in function onPostExecute) that is received after parsing a json file from a remote server, which is a plain array (as opposed to adobe_products, which is a fancy xml).

The array adobe_products is displayed as is expected. To display the new array (result), i've tried passing the new array in place of `adobe_products like so:

ViewDishes.this.setListAdapter(new ArrayAdapter<String>(getActivity(), R.layout.fragment_viewdishes, R.id.label, result));

which doesn't seem to work[crashes].

LogCat output:

java.lang.NullPointerException
    at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:394)
    at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)

How can I display the array as a list of items?