1public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
2    private List<String> mData;
3    private LayoutInflater mInflater;
4    private ItemClickListener mClickListener;
5
6    // data is passed into the constructor
7    MyAdapter(Context context, List<String> data) {
8        this.mInflater = LayoutInflater.from(context);
9        this.mData = data;
10    }
11
12    // inflates the row layout from xml when needed
13    @Override
14    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
15        View view = mInflater.inflate(R.layout.recyclerview_row, parent, false);
16        return new ViewHolder(view);
17    }
18
19    // binds the data to the TextView in each row
20    @Override
21    public void onBindViewHolder(ViewHolder holder, int position) {
22        String animal = mData.get(position);
23        holder.myTextView.setText(animal);
24    }
25
26    // total number of rows
27    @Override
28    public int getItemCount() {
29        return mData.size();
30    }
31
32    // stores and recycles views as they are scrolled off screen
33    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
34        TextView myTextView;
35
36        ViewHolder(View itemView) {
37            super(itemView);
38            myTextView = itemView.findViewById(R.id.tvAnimalName);
39            itemView.setOnClickListener(this);
40        }
41
42        @Override
43        public void onClick(View view) {
44            if (mClickListener != null) mClickListener.onItemClick(view, getAdapterPosition());
45        }
46    }
47
48    // allows clicks events to be caught
49    void setClickListener(ItemClickListener itemClickListener) {
50        this.mClickListener = itemClickListener;
51    }
52
53    // parent activity will implement this method to respond to click events
54    public interface ItemClickListener {
55        void onItemClick(View view, int position);
56    }
57}

1public class MainActivity extends AppCompatActivity implements MyAdapter.ItemClickListener {
2    MyAdapter adapter;
3
4    @Override
5    protected void onCreate(Bundle savedInstanceState) {
6        super.onCreate(savedInstanceState);
7        setContentView(R.layout.activity_main);
8
9        // data to populate the RecyclerView with
10        ArrayList<String> animalNames = new ArrayList<>();
11        // Add data to the list...
12
13        // set up the RecyclerView
14        RecyclerView recyclerView = findViewById(R.id.rvAnimals);
15        recyclerView.setLayoutManager(new LinearLayoutManager(this));
16        adapter = new MyAdapter(this, animalNames);
17        adapter.setClickListener(this);
18        recyclerView.setAdapter(adapter);
19    }
20
21    @Override
22    public void onItemClick(View view, int position) {
23        Toast.makeText(this, "You clicked " + adapter.getItem(position) + " on row number " + position, Toast.LENGTH_SHORT).show();
24    }
25}