StockViewHolder(View itemView) {
            super(itemView);
            cv = itemView.findViewById(R.id.card);
            name = itemView.findViewById(R.id.name);
            quantity = itemView.findViewById(R.id.quantity);
            category = itemView.findViewById(R.id.category);
            no = itemView.findViewById(R.id.no);

            itemView.setOnClickListener(v->{
             mObserver.onCardClicked(getAdapterPosition(), stockFiltered.get(getAdapterPosition()).name);
            }
        }