Android : Android Asynctask check status(finished)

i 'm working asynctask class. i try parse json and show it.everythink is ok at the monment.but i have one problem.i want to check status my Asynctask class.i mean i want to check when finished Asyncttask this is a my code

private class LoadItemFromServer extends AsyncTask<String, Void, String> {

    ProgressDialog pDialog;

    @Override
    protected void onPreExecute() {
        super.onPreExecute();

        pDialog = new ProgressDialog(getActivity());
        pDialog.setMessage("Loading...");
        pDialog.setCancelable(false);
        pDialog.show();
    }

    @Override
    protected String doInBackground(String... params) {

        try {


                JsonResult = FlashScreen
                        .execute(
                                "***************",
                                FlashScreen.CreateJson(
                                        "GetCategoryHierharchy", "eng"));




        } catch (Exception e) {

        }

        return null;
    }

    @Override
    protected void onPostExecute(String result) {
        super.onPostExecute(result);

        if (pDialog != null) {
            pDialog.dismiss();

            pDialog = null;
        }

        Log.e("serverrrr", JsonResult);
        try {
            ParseJsonFromServer(JsonResult);
        } catch (JSONException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}



public void ParseJsonFromServer(String server) throws JSONException {
    JSONArray jsonArray = null;
    JSONObject mainJson = new JSONObject(server);
    jsonArray = mainJson.getJSONArray("result");

    for (int i = 0; i < jsonArray.length(); i++) {
        JSONObject data = jsonArray.getJSONObject(i).getJSONObject("data");

        Azercell_PagerTitleStrip_items objItem = new Azercell_PagerTitleStrip_items();

        objItem.setTitle(data.getString("title"));
        Log.e("titlesss", data.getString("title"));
        arrayOfList.add(objItem);
    }

}

my problem is this part code:

loaditem = new LoadItemFromServer();

    loaditem.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
     try {
         if (loaditem.getStatus() == AsyncTask.Status.FINISHED) {
             for (int i = 0; i < arrayOfList.size(); i++) {
                page = inflater.inflate(R.layout.azercell_category_pages, null);
                // setAdapterToListview(page);
                titles.add(arrayOfList.get(i).getTitle());
                pages.add(page);
            }
         } else {
             Log.e("asynctask status", "not finished");
         }
     } catch (Exception e) {
     }

at the moment my arrayOfList array's size is 0,but i loged ParseJsonFromServer and this array's size is not 0. i can not wait,when asynctas is finished how i can solve my problem? if anyone knows solution please help me