How to get ItemPosition When Scrolled to Next Posts In RecycleView

Question

i make app with json api Retrofit and Wordpress as backend, first 10 posts works smooth, when i click on those posts i can see the post details, but when i scroll to get more posts, i can see the posts but when i click on it i see this error:

 Caused by: java.lang.IndexOutOfBoundsException: Index: 10, Size: 10
    at java.util.ArrayList.get(ArrayList.java:437)
    at com.punjabidharti.myapplication.PostDetails.onCreate(PostDetails.java:30)

and my PostDetails.Class

 Intent i = getIntent();
    int position = i.getExtras().getInt("itemPosition");
    Log.e("PostDetails ", "title is " + MainActivity.mListPost.get(position).getTitle().getRendered());
    this.title = (TextView) findViewById(R.id.title);
    title.setText(Html.fromHtml(MainActivity.mListPost.get(position).getTitle().getRendered()));
    String data = String.valueOf((Html.fromHtml(MainActivity.mListPost.get(position).getContent().getRendered())));

    WebView webview = (WebView)this.findViewById(R.id.postwebview);
    webview.getSettings().setJavaScriptEnabled(true);
    webview.loadData(data, "text/html; charset=utf-8", "UTF-8");

and this is how i get more posts on scroll :

 recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
            if (dy > 0) { //check for scroll down
                visibleItemCount = mLayoutManager.getChildCount();
                totalItemCount = mLayoutManager.getItemCount();
                pastVisiblesItems = mLayoutManager.findFirstVisibleItemPosition();

                if (loading) {
                    if ((visibleItemCount + pastVisiblesItems) >= totalItemCount) {
                        loading = false;
                        Log.v("...", "Last Item Wow !");
                        // Do pagination.. i.e. fetch new data

                        yourURL = "https://punjabidharti.com/wp-json/wp/v2/posts/?categories=4514&page=2";

                        getRetrofit();


                        loading = true;
                    }
                }
            }
        }
    });

this is how i get data from Retrofit:

public void getRetrofit(){
    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl(baseURL)
            .addConverterFactory(GsonConverterFactory.create())
            .build();
    RetrofitArrayApi service = retrofit.create(RetrofitArrayApi.class);
    String yourURl = yourURL.replace(baseURL,"");
    Call<List<WPPost>>  call = service.getPostInfo( yourURl);
    call.enqueue(new Callback<List<WPPost>>() {
        @Override
        public void onResponse(Call<List<WPPost>> call, Response<List<WPPost>> response) {
            Log.e("mainactivyt", " response "+ response.body());
            mListPost = response.body();
            progressBar.setVisibility(View.GONE);
            if (response.body() != null) {
                for (int i = 0; i < response.body().size(); i++) {
                    Log.e("main ", " title " + response.body().get(i).getTitle().getRendered() + " " +
                            response.body().get(i).getId());
                    String tempdetails = response.body().get(i).getExcerpt().getRendered().toString();
                    tempdetails = tempdetails.replace("<p>", "");
                    tempdetails = tempdetails.replace("</p>", "");
                    tempdetails = tempdetails.replace("[&hellip;]", "");
                    list.add(new Model(Model.IMAGE_TYPE, response.body().get(i).getTitle().getRendered(),
                            tempdetails,
                            response.body().get(i).getLinks().getWpAttachment().get(0).getHref()));
                }

                progressBar.setVisibility(View.GONE);
            } else {
                progressBar.setVisibility(View.GONE);
            }


            adapter.notifyDataSetChanged();
        }
        @Override
        public void onFailure(Call<List<WPPost>> call, Throwable t) {
        }
    });

i have searched a lot for more than week but still unable to find answers. please help