RecyclerView: Efficiently Displaying Lists in Android

RecyclerView is a flexible and efficient view for displaying large datasets in Android. It is much more efficient than ListView because it reuses view holders.

Setting up RecyclerView:

    RecyclerView recyclerView = findViewById(R.id.recyclerView);
    recyclerView.setLayoutManager(new LinearLayoutManager(this));
    recyclerView.setAdapter(new MyAdapter(dataList));
  

Adapter Example:

    public class MyAdapter extends RecyclerView.Adapter {
        private List dataList;
        
        public MyAdapter(List dataList) {
            this.dataList = dataList;
        }
        
        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_view, parent, false);
            return new ViewHolder(view);
        }
        
        @Override
        public void onBindViewHolder(ViewHolder holder, int position) {
            holder.textView.setText(dataList.get(position));
        }
        
        @Override
        public int getItemCount() {
            return dataList.size();
        }
        
        public class ViewHolder extends RecyclerView.ViewHolder {
            TextView textView;
            
            public ViewHolder(View itemView) {
                super(itemView);
                textView = itemView.findViewById(R.id.textView);
            }
        }
    }