android android-async-http post,Async HTTP post android

I am using an application where i just need to download a pair of coordinates for google maps from a mysql server. I can do this successfully using php and a normal httpost but my app freezes for a few seconds when i do it.

I read that you need to make httppost asycronous in order to avoid that freezing until the server finishes the prossess and sends the results.

The point is that i need that results in a json array like the normal httpost.

For example if i had this httppost.

HttpClient httpclient = new DefaultHttpClient();

HttpPost httppost = new HttpPost("http://www.yoursite.com/script.php");

try {

// Add your data

List nameValuePairs = new ArrayList(2);

nameValuePairs.add(new BasicNameValuePair("id", "12345"));

nameValuePairs.add(new BasicNameValuePair("stringdata", "AndDev is Cool!"));

httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

// Execute HTTP Post Request

HttpResponse response = httpclient.execute(httppost);

} catch (ClientProtocolException e) {

// TODO Auto-generated catch block

} catch (IOException e) {

// TODO Auto-generated catch block

}

String result11 = null;

// convert response to string

try {

BufferedReader reader = new BufferedReader(new InputStreamReader(is11, "iso-8859-1"), 8);

StringBuilder sb = new StringBuilder();

sb.append(reader.readLine() + "\n");

String line = "0";

while ((line = reader.readLine()) != null) {

sb.append(line + "\n");

}

is11.close();

result11 = sb.toString();

} catch (Exception e) {

Log.e("log_tag", "Error converting result " + e.toString());

}

// parsing data

try {

JSONArray jArray1 = new JSONArray(result11);

} catch (JSONException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

How can i convert that to an asynchronous post so i can avoid the freeze ?