getting a custom adapter in the main activity?

public class MainActivity extends ActionBarActivity {



    public String url = "http://blog.teamtreehouse.com/api/get_recent_summary/?count=20";
    public static final String TAG = MainActivity.class.getSimpleName();



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


        if(isNetworkAvailable()) {
            OkHttpClient client = new OkHttpClient();
            Request request = new Request.Builder()
                    .url(url)
                    .build();

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

                }

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


                    try {
                        String jsonData = response.body().string();
                        Log.v(TAG, jsonData);
                        if (response.isSuccessful()) {
                            getCurrentDetails(jsonData);
                        }
                    } catch (IOException e) {
                        Log.e(TAG, "Exception caught: ", e);
                    } catch (JSONException e) {
                        Log.e(TAG, "Exception caught: ", e);
                    }
                }
            });
        }



    }




    private content[] getCurrentDetails(String jsonData) throws JSONException {
        JSONObject forecast = new JSONObject(jsonData);

        JSONArray data = forecast.getJSONArray("posts");

        content[] myDataset = new content[data.length()];

        for (int i = 0; i < data.length(); i++) {

            JSONObject jsonDay = data.getJSONObject(i);
            content day = new content();

            day.setId(jsonDay.getInt("id"));
            day.setUrl(jsonDay.getString("url"));
            day.setTitle(jsonDay.getString("title"));
            day.setDate(jsonDay.getString("date"));
            day.setAuthor(jsonDay.getString("author"));
            day.setThumbnail(jsonDay.getString("thumbnail"));
            myDataset[i] = day;
        }

        return myDataset;
    }


    // This will check if there is a net work conection
    private boolean isNetworkAvailable() {
        ConnectivityManager manager = (ConnectivityManager)
                getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = manager.getActiveNetworkInfo();
        boolean isAvailable = false;
        if (networkInfo != null && networkInfo.isConnected()) {
            isAvailable = true;
        }
        return isAvailable;
    }







}

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.HourViewHolder> {
    private content[] mDataset;

    public MyAdapter(content[] myDataset) {
        mDataset = myDataset;
    }


//  the lay out is not the correct lay out but its just there for a example.
    @Override
    public HourViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.activity_main, parent, false);
        HourViewHolder viewHolder = new HourViewHolder(view);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(HourViewHolder holder, int position) {
        holder.bindHour(mDataset[position]);
    }

    @Override
    public int getItemCount() {
        return mDataset.length;
    }

    public class HourViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

        public TextView mTimeLabel;


        public HourViewHolder(View itemView) {
            super(itemView);

            mTimeLabel = (TextView) itemView.findViewById(R.id.Title);
        }

        public void bindHour(content hour) {
            mTimeLabel.setText(hour.getTitle());
        }

        @Override
        public void onClick(View view) {

        }
    }
}