using boolean to check model listview state android

Am working saving the current state of a check item while scrolling, and it worked, but i couldn't save the state of the TextView noting the count when the checkbox is checked or unchecked.

this is my Adapter,

NewsAdapter.java

public class TestNewsAdapter extends RealmBaseRecyclerViewAdapter<NewsTrend, TestNewsAdapter.PostsViewHolder> {

public RealmResults<NewsTrend> realmResults;
public Context context;
static  String fbid;
private User user;


private RetrofitInterface restApi;

ArrayList<Boolean> positionArray;



public TestNewsAdapter(Context context, RealmResults<NewsTrend> realmResults,
                       boolean automaticUpdate, User user) {
    super(context, realmResults, automaticUpdate);
    this.realmResults = realmResults;
    this.context = context;
    this.user = user;

    positionArray = new  ArrayList<>(realmResults.size());
    for(int i =0;i<realmResults.size();i++){
        positionArray.add(false);
    }
}

@Override
public PostsViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
    fbid = user.getId();
    View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.row_news, viewGroup, false);
    PostsViewHolder mediaViewHolder = new PostsViewHolder(v);
    return mediaViewHolder;
}

@Override
public void onBindViewHolder(final PostsViewHolder holder, final int position) {

    final NewsTrend postsData = getItem(position);

    holder.itemView.setTag(postsData);
    holder.tvNewsCountLike.setText(""+ postsData.getLike_count());

    Glide.with(context)
            .load(postsData.getImage())
            .centerCrop()
            .placeholder(R.drawable.tw_logo)
            .into(holder.ivNewsImage);



    if (postsData.getLike_status() == 1) {
        holder.ivLike.setChecked(true);
    } else {
        holder.ivLike.setChecked(false);
    }

    holder.ivLike.setOnCheckStateChangeListener(new ShineButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(View view, boolean checked) {
            if (checked) {
                like(postsData.getNews_id());
                holder.tvNewsCountLike.setText("" + (Integer.parseInt(holder.tvNewsCountLike.getText().toString()) + 1));
                positionArray.set(position, true);
            } else {
                like(postsData.getNews_id());
                holder.tvNewsCountLike.setText("" + (Integer.parseInt(holder.tvNewsCountLike.getText().toString()) - 1));
                positionArray.set(position, false);
            }
        }
    });
}




@Override
public NewsTrend getItem(int i) {
    return realmResults.get(i);
}

public void swapData(RealmResults<NewsTrend> realmResults) {
    this.realmResults = realmResults;
}

@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
    super.onAttachedToRecyclerView(recyclerView);
}

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

public static class PostsViewHolder extends RecyclerView.ViewHolder {


    public ImageView ivFavorite;
    public TextView tvNewsCountLike;

    PostsViewHolder(View itemView) {
        super(itemView);
        ivLike = (ShineButton) itemView.findViewById(R.id.ivLike);

        tvNewsCountLike = (TextView)   itemView.findViewById(R.id.tvNewsCountLike);

            ivLike.setOnCheckStateChangeListener(null);
       }
    }
}