Basic Adapter with dataBinding

BasicAdapter.java

class AdapterName extends RecyclerView.Adapter<AdapterName.ViewHolder> {
    private Contract contract;
    private List<T> data;

    public AdapterName(Contract contract, List<T> data) {
        this.contract = contract;
        this.data = data;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(contract.getContext());
        DataBinding dataBinding = DataBindingUtil.inflate(inflater, R.layout.layout, parent, false);
        return new ViewHolder(dataBinding);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        Presenter presenter = new Presenter(contract, data.get(position));
        holder.dataBinding.setPresenter(presenter);
        holder.dataBinding.getRoot().setTag(presenter);
    }

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

    public class ViewHolder extends RecyclerView.ViewHolder {
        private DataBinding dataBinding;

        public ViewHolder(DataBinding dataBinding) {
            super(dataBinding.getRoot());
            this.dataBinding = dataBinding;
        }
    }
}