package ru.mustakimov.retrofittutorial;

import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;

public class PostModel {

    @SerializedName("site")
    @Expose
    private String site;
    @SerializedName("name")
    @Expose
    private String name;
    @SerializedName("desc")
    @Expose
    private String desc;
    @SerializedName("link")
    @Expose
    private String link;
    @SerializedName("elementPureHtml")
    @Expose
    private String elementPureHtml;

    /**
     * @return The site
     */
    public String getSite() {
        return site;
    }

    /**
     * @param site The site
     */
    public void setSite(String site) {
        this.site = site;
    }

    /**
     * @return Site name
     */
    public String getName() {
        return name;
    }

    /**
     * @param name Site name
     */
    public void setName(String name) {
        this.name = name;
    }

    /**
     * @return Site description
     */
    public String getDesc() {
        return desc;
    }

    /**
     * @param desc Site description
     */
    public void setDesc(String desc) {
        this.desc = desc;
    }

    /**
     * @return The link
     */
    public String getLink() {
        return link;
    }

    /**
     * @param link The link
     */
    public void setLink(String link) {
        this.link = link;
    }

    /**
     * @return The elementPureHtml
     */
    public String getElementPureHtml() {
        return elementPureHtml;
    }

    /**
     * @param elementPureHtml The elementPureHtml
     */
    public void setElementPureHtml(String elementPureHtml) {
        this.elementPureHtml = elementPureHtml;
    }

}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="ru.mustakimov.retrofittutorial.MainActivity">

    <android.support.v7.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:id="@+id/posts_recycle_view"
        android:layout_alignParentStart="true" />
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:padding="5dp"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <TextView
        android:id="@+id/postitem_post"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Очень интересный пост с баша, который никто никогда не видел, так как его не существует"
        android:textColor="?android:attr/textColorPrimary"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <TextView
        android:id="@+id/postitem_site"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Bash.im"
        android:layout_below="@+id/postitem_post"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:gravity="end"
        android:textAlignment="textEnd" />
</RelativeLayout>

package ru.mustakimov.retrofittutorial;

import android.os.Build;
import android.support.v7.widget.RecyclerView;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import java.util.List;

public class PostsAdapter extends RecyclerView.Adapter<PostsAdapter.ViewHolder> {

    private List<PostModel> posts;

    public PostsAdapter(List<PostModel> posts) {
        this.posts = posts;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.post_item, parent, false);
        return new ViewHolder(v);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        PostModel post = posts.get(position);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            holder.post.setText(Html.fromHtml(post.getElementPureHtml(), Html.FROM_HTML_MODE_LEGACY));
        } else {
            holder.post.setText(Html.fromHtml(post.getElementPureHtml()));
        }
        holder.site.setText(post.getSite());
    }

    @Override
    public int getItemCount() {
        if (posts == null)
            return 0;
        return posts.size();
    }

    class ViewHolder extends RecyclerView.ViewHolder {
        TextView post;
        TextView site;

        public ViewHolder(View itemView) {
            super(itemView);
            post = (TextView) itemView.findViewById(R.id.postitem_post);
            site = (TextView) itemView.findViewById(R.id.postitem_site);
        }
    }
}

package ru.mustakimov.retrofittutorial;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.Toast;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

public class MainActivity extends AppCompatActivity {

    RecyclerView recyclerView;
    List<PostModel> posts;

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

        posts = new ArrayList<>();

        recyclerView = (RecyclerView) findViewById(R.id.posts_recycle_view);
        LinearLayoutManager layoutManager = new LinearLayoutManager(this);
        recyclerView.setLayoutManager(layoutManager);

        PostsAdapter adapter = new PostsAdapter(posts);
        recyclerView.setAdapter(adapter);

        try {
            Response response = App.getApi().getData("bash", 50).execute();
        } catch (IOException e) {
            e.printStackTrace();
        }

        App.getApi().getData("bash", 50).enqueue(new Callback<List<PostModel>>() {
            @Override
            public void onResponse(Call<List<PostModel>> call, Response<List<PostModel>> response) {
                posts.addAll(response.body());
                recyclerView.getAdapter().notifyDataSetChanged();
            }

            @Override
            public void onFailure(Call<List<PostModel>> call, Throwable t) {
                Toast.makeText(MainActivity.this, "An error occurred during networking", Toast.LENGTH_SHORT).show();
            }
        });
    }
}