JsonParsingExable

package io.adev.fast_pet;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.ViewGroup;
import android.widget.TextView;

import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

import java.util.ArrayList;
import java.util.List;

import okhttp3.OkHttpClient;
import okhttp3.Request;

public class MainActivity extends AppCompatActivity {

    class New {
        int text;
        New(int text) {
            this.text = text;
        }
    }

    private OkHttpClient client = new OkHttpClient();

    private RecyclerView recyclerView;

    private final List<New> news = new ArrayList<>();

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        recyclerView = (RecyclerView) findViewById(R.id.recyvlerView);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        recyclerView.setAdapter(new RecyclerView.Adapter() {
            @Override
            public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                TextView view = new TextView(MainActivity.this);
                return new RecyclerView.ViewHolder(view) {};
            }

            @Override
            public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
                New n = news.get(position);
                TextView textView = (TextView) holder.itemView;
                textView.setText(n.text + "");
            }

            @Override
            public int getItemCount() {
                return news.size();
            }
        });

        new Thread(new Runnable() {
            @Override
            public void run() {

                try {

                    Request request = new Request.Builder()
                            .url("")
                            .build();

                    String responseString = client.newCall(request)
                            .execute()
                            .body().string();

//                    String responseString = "{\"code\":0,\"response\":{\"news\":[{\"text\":315},{\"text\":1254},{\"text\":3412}]}}";

                    JsonObject response = new JsonParser().parse(responseString).getAsJsonObject();

                    int code = response.get("code").getAsInt();
                    JsonArray newsArray = response.get("news").getAsJsonArray();

                    final List<New> news = new ArrayList<>();
                    for (JsonElement el : newsArray) {
                        JsonObject newJson = el.getAsJsonObject();
                        int text = newJson.get("text").getAsInt();
                        news.add(new New(text));
                    }

                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            MainActivity.this.news.addAll(news);
                            recyclerView.getAdapter().notifyDataSetChanged();
                        }
                    });

                } catch (Exception e) {
                    e.printStackTrace();
                }

            }
        }).start();
        
    }

}