OkHttp in android for making network requests

Question

What I am trying to do::

I am trying to learn the usage of Okhttp for making networking calls in android

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What I have done

Answer 1

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    new AsyncTask (){

        @Override
        protected String doInBackground(String... params) {
            // TODO Auto-generated method stub
            try {
                client = new OkHttpClient();
                s = post("https://raw.github.com/square/okhttp/master/README.md","");
            } catch (Exception e) {
                // TODO: handle exception
                e.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onPostExecute(String result) {
            super.onPostExecute(result);
            Log.e("ANSWER", "" + s);

        }
    }.execute();

}