1.在build.gradle中添加Firebase Firestore和Recyclerview的依赖：

implementation 'com.google.firebase:firebase-firestore:23.0.1'
implementation 'androidx.recyclerview:recyclerview:1.2.1'

2. 在布局文件中加入RecyclerView：

3. 在Activity或Fragment中初始化Firestore和RecyclerView：

private FirebaseFirestore db;
private MyAdapter mAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    db = FirebaseFirestore.getInstance();

    RecyclerView recyclerView = findViewById(R.id.recyclerView);
    mAdapter = new MyAdapter();

    recyclerView.setLayoutManager(new LinearLayoutManager(this));
    recyclerView.setAdapter(mAdapter);

    loadData();
}

private void loadData() {
    db.collection("users") // 指定Firestore集合
        .orderBy("name") // 按名字排序
        .get()
        .addOnSuccessListener(queryDocumentSnapshots -> {
            for (QueryDocumentSnapshot document : queryDocumentSnapshots) {
                User user = document.toObject(User.class);
                mAdapter.addData(user); // 添加数据到适配器
            }
            mAdapter.notifyDataSetChanged(); // 刷新数据
        })
        .addOnFailureListener(e -> Log.e(TAG, "Error getting data", e));
}

4. 在Adapter中绑定数据：

public class MyAdapter extends RecyclerView.Adapter {
    private List mData = new ArrayList<>();

    public void addData(User user) {
        mData.add(user);
    }

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

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        User user = mData.get(position);
        holder.nameTextView.setText(user.getName());
        holder.emailTextView.setText(user.getEmail());
    }

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

    static class ViewHolder extends RecyclerView.ViewHolder {
        TextView nameTextView;
        TextView emailTextView;

        ViewHolder(@NonNull View itemView) {
            super(itemView);
            nameTextView = itemView.findViewById(R.id.nameTextView);
            emailTextView = itemView.findViewById(R.id.emailTextView);
        }
    }
}

在加载数据时，通过Firestore的addSnapshotListener()方法来监听数据，当数据有变化时会自动更新RecyclerView。