Haven't explored `OkHttp` previously, the network call using `AsyncTask` works fine at the moment, but would like to switch to `OkHttp` for other requirements, 

Here's how I do the network call using `AsyncTask` : 

```
   private class HTTPAsyncTask extends AsyncTask<String, Void, String> {
    @Override
    protected String doInBackground(String... urls) {
        // params comes from the execute() call: params[0] is the url.
        try {
            try {
                return HttpPost(urls[0]);
            } catch(Exception e) {
                e.printStackTrace();
                return "Error!";
            }
        } catch (Exception e) {
            return "Unable to retrieve web page. URL may be invalid.";
        }
    }
    // onPostExecute displays the results of the AsyncTask.
    @Override
    protected void onPostExecute(String result) {
        Log.d("data is being sent",result);
    }
}
private String HttpPost(String myUrl) throws IOException {
    String result = "";

    URL url = new URL(myUrl);

    // 1. create HttpURLConnection
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setRequestMethod("POST");
    conn.setRequestProperty("Content-Type", "application/json; charset=utf-8");
    OutputStream os = conn.getOutputStream();
    BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
    writer.write(StringData);
    writer.flush();
    writer.close();
    os.close();

    // 4. make POST request to the given URL
    conn.connect();

    // 5. return response message
    return conn.getResponseMessage()+"";

}

```

Now, how to perform the same `POST` call with `OkHttp` , here's where I am : 

```
private void makeNetworkCall()
{
    OkHttpClient client=new OkHttpClient();
    Request request=new Request.Builder().url(post_url).build();

    client.newCall(request).enqueue(new Callback() {
        @Override
        public void onFailure(Call call, final IOException e)
        {

            Log.e(getClass().getSimpleName(), "Exception parsing JSON", e);
        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {

            Log.e("TAG","SUCCESS");
        }
    });
}

```

However, uncertain how to pass the data using the `OkHttp` way, Any help would be deeply appreciated. Thanking you.