Endless recyclerView+progressBar

activity or fragment

RecyclerView recyclerView;
MovieRecyclerViewAdapter adapter;
boolean isEndOfList = false;

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

private void configureRecyclerView() {
        recyclerView = findViewById(R.id.recyclerView);
        LinearLayoutManager mLayoutManager = new LinearLayoutManager(MainActivity.this, LinearLayoutManager.VERTICAL, false);
        recyclerView.setLayoutManager(mLayoutManager);

        adapter = new MovieRecyclerViewAdapter(this, recyclerView);
        recyclerView.setAdapter(adapter);

        // set RecyclerView on item click listener
        adapter.setOnItemClickedListener(position -> {
            //TODO recyclerView click handler
        });

        //set load more listener for the RecyclerView adapter
        adapter.setOnLoadMoreListener(() -> {
            //TODO loadMore handler
             if (!isEndOfList) {
                adapter.addNullData();                                              //add progress item
                new Handler().postDelayed(() -> {
                    adapter.removeNull();                                           //remove progress item
                    adapter.setList(responseWrapper.getData());                     // fetch data and set to adapter
                    adapter.setLoaded();                                            // set false to adapter isLoading
                    
                    if (responseWrapper.getData() == null) isEndOfList = true;      // determine end of list
                }, 2000);
            }
        });
    }

activity or fragment layout

.
.
<androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recyclerView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>
.
.       

CustomeRecyclerViewAdapter

public class CustomeRecyclerViewAdapter extends RecyclerView.Adapter<CustomeRecyclerViewAdapter.CustomViewHolder> {

    private Context mContext;
    private List<T> dataList = new ArrayList<>();
    private OnItemClickedListener onItemClickedListener;

    // for load more
    private final int VIEW_TYPE_ITEM = 0;
    private final int VIEW_TYPE_LOADING = 1;
    private OnLoadMoreListener onLoadMoreListener;
    private boolean isLoading;
    private int visibleThreshold = 2;
    private int lastVisibleItem, totalItemCount;


    public void setOnLoadMoreListener(OnLoadMoreListener onLoadMoreListener) {
        this.onLoadMoreListener = onLoadMoreListener;
    }

    public interface OnLoadMoreListener {
        void onLoadMore();
    }

    public void setOnItemClickedListener(OnItemClickedListener onItemClickedListener) {
        this.onItemClickedListener = onItemClickedListener;
    }

    public interface OnItemClickedListener {
        void onItemClick(int position);
    }

    public CustomeRecyclerViewAdapter(Context mContext, RecyclerView recyclerView) {
        this.mContext = mContext;

        // load more
        final LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
        recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);

                totalItemCount = layoutManager.getItemCount();
                lastVisibleItem = layoutManager.findLastVisibleItemPosition();

                if (!isLoading && totalItemCount <= (lastVisibleItem + visibleThreshold)) {
                    if (onLoadMoreListener != null) {
                        onLoadMoreListener.onLoadMore();
                    }
                    isLoading = true;
                }
            }
        });
    }

    @NonNull
    @Override
    public CustomViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        if (viewType == VIEW_TYPE_ITEM) {
            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_list, parent, false);
            return new DataViewHolder(view);
        } else if (viewType == VIEW_TYPE_LOADING) {
            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_progress, parent, false);
            return new LoadingViewHolder(view);
        }
        return null;
    }

    @Override
    public void onBindViewHolder(@NonNull CustomViewHolder holder, int position) {
        if (holder instanceof DataViewHolder) {
            T currentObject = dataList.get(position);

            DataViewHolder dataViewHolder = (DataViewHolder) holder;

            Picasso.with(mContext)
                    .load(currentObject.getPoster())
                    .centerCrop()
                    .resizeDimen(R.dimen.posterWidth, R.dimen.posterHeight)
                    .placeholder(R.drawable.place_holder)
                    .error(R.drawable.error_image_loading)
                    .into(dataViewHolder.poster);
            dataViewHolder.title.setText(currentObject.getTitle());
            dataViewHolder.year.setText(currentObject.getYear());

            dataViewHolder.container.setOnClickListener(v -> {
                onItemClickedListener.onItemClick(position);
            });
        } else {
            //Do whatever you want. Or nothing !!
            LoadingViewHolder loadingViewHolder = (LoadingViewHolder) holder;

            loadingViewHolder.progressBar.setIndeterminate(true);
        }
    }

    @Override
    public int getItemCount() {
        return dataList == null ? 0 : dataList.size();
    }

    @Override
    public int getItemViewType(int position) {
        return dataList.get(position) == null ? VIEW_TYPE_LOADING : VIEW_TYPE_ITEM;
    }

    public T getItem(int position) {
        return dataList.get(position);
    }

    public void setList(List<T> dataList) {
        if (dataList != null) {
            this.dataList.addAll(dataList);
            notifyDataSetChanged();
        }
    }

    public void addNullData() {
        dataList.add(null);
        notifyItemInserted(dataList.size()-1);
    }

    public void removeNull() {
        if (isLoading) {
            dataList.remove(dataList.size() - 1);
            notifyItemRemoved(dataList.size());
        }
    }

    public void setLoaded() {
        isLoading = false;
    }

    public class CustomViewHolder extends RecyclerView.ViewHolder {

        public CustomViewHolder(@NonNull View itemView) {
            super(itemView);
        }
    }

    public class DataViewHolder extends CustomViewHolder {

        ImageView poster;
        TextView title;
        TextView year;
        View container;

        public DataViewHolder(@NonNull View itemView) {
            super(itemView);

            poster = itemView.findViewById(R.id.poster);
            title = itemView.findViewById(R.id.title);
            year = itemView.findViewById(R.id.year);
            container = itemView.findViewById(R.id.container);
        }
    }

    public class LoadingViewHolder extends CustomViewHolder {

        public ProgressBar progressBar;

        public LoadingViewHolder(@NonNull View itemView) {
            super(itemView);

            progressBar = itemView.findViewById(R.id.progressbar);
        }
    }
}

row_list.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:clickable="true"
    android:focusable="true"
    android:padding="8dp">

    <ImageView
        android:id="@+id/poster"
        android:layout_width="@dimen/posterWidth"
        android:layout_height="@dimen/posterHeight"
        android:adjustViewBounds="true" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginStart="16dp"
        android:orientation="vertical">

        <TextView
            android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ellipsize="end"
            android:maxLines="1"
            android:text="movie title"
            android:textAppearance="@android:style/TextAppearance.Medium" />

        <TextView
            android:id="@+id/year"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="1958" />

    </LinearLayout>
</LinearLayout>

row_progress.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:orientation="vertical">

    <ProgressBar
        android:id="@+id/progressbar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</LinearLayout>