public class ItemViewAdapter extends
RecyclerView.Adapter<ItemViewAdapter.ViewHolder> {
private ArrayList<Item> items = new ArrayList<>();
private Context appContext;

public void setItems(ArrayList<Item> items) {
    this.items = items;
    notifyDataSetChanged();
}

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

@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
    holder.bind(items.get(position), position);

}

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


class ViewHolder extends RecyclerView.ViewHolder{
    TextView nameItem;
    Button lessCount;
    EditText count;
    Button moreCount;
    TextView price;
    ImageButton addToCart;

    public ViewHolder(View itemView){
        super(itemView);
        nameItem = (TextView) itemView.findViewById(R.id.item_name);
        lessCount = (Button) itemView.findViewById(R.id.less_count);
        count = (EditText) itemView.findViewById(R.id.count);
        moreCount = (Button) itemView.findViewById(R.id.more_count);
        price = (TextView) itemView.findViewById(R.id.price_textview);
        addToCart = (ImageButton) itemView.findViewById(R.id.add_to_cart);

    }

    public void bind(final Item item, final int position){
        nameItem.setText(null);
        nameItem.setText(item.getName());
        count.setText(null);
        count.setText(String.valueOf(item.getCount()));
        price.setText(null);
        price.setText(String.valueOf(item.getPrice()));

        lessCount.setOnClickListener(null);
        lessCount.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                item.lessCount();
                price.setText(String.valueOf(item.getPrice()));
                count.setText(String.valueOf(item.getCount()));
                //notifyItemChanged(position);
            }
        });
        count.setOnClickListener(null);
        count.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                try{
                    item.setCount(Integer.parseInt(s.toString()));
                    price.setText(String.valueOf(item.getPrice()));
                }
                catch (Exception e){}

            }

            @Override
            public void afterTextChanged(Editable s) {
            }
        });
        moreCount.setOnClickListener(null);
        moreCount.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                item.addCount();//todo цифры странно прыгают
                price.setText(String.valueOf(item.getPrice()));
                count.setText(String.valueOf(item.getCount()));
                //notifyItemChanged(position);
            }
        });
        addToCart.setOnClickListener(null);
        addToCart.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ShoppingCartController.get(appContext).addItemToCart(item);
            }
        });
    }
}