What methods need to be overridden in a subclass of RecyclerView?

It is necessary to override the onCreateViewHolder and onBindViewHolder methods of the Adapter class. Additionally, you will need to implement logic to get the item count via the getItemCount method. If the data can change, you should use adapter notification methods such as notifyDataSetChanged, notifyItemInserted, notifyItemRemoved, notifyItemChanged, notifyItemRangeChanged, notifyItemMoved.