RecycleView仅显示一个数据条目

Question

我在使用回收视图时遇到了问题，它仅显示了从Firebase提取的一位用户。

我的回收适配器如下：

FirebaseRecyclerAdapter<Users, FriendsViewHolder> adapter = new FirebaseRecyclerAdapter<Users, FriendsViewHolder>(options) {
            @Override
            protected void onBindViewHolder(@NonNull final FriendsViewHolder holder, int position, @NonNull Users model)
            {
                String userIDs = getRef(position).getKey();
                UsersRef.child(userIDs).addValueEventListener(new ValueEventListener() {
                    @Override
                    public void onDataChange(@NonNull DataSnapshot dataSnapshot)
                    {
                        String name = dataSnapshot.child("name").getValue().toString();
                        String number = dataSnapshot.child("phone").getValue().toString();

 Log.d("USERNAME", name);

                    holder.username.setText(name);
                    holder.phone.setText(number);
                }

                @Override
                public void onCancelled(@NonNull DatabaseError databaseError) {

                }
            });
        }

        @NonNull
        @Override
        public FriendsViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i)
        {
            View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.friend_list,viewGroup,false);
            FriendsViewHolder viewHolder = new FriendsViewHolder(view);
            return viewHolder;

        }
    };

当我调试程序时，log.d（“ USERNAME”，name）;仅显示我的树中有1个节点。

当我循环FirebaseRecyclerAdapter时，它将显示我想要的所有节点：

FirebaseRecyclerAdapter<Users, FriendsViewHolder> adapter = new FirebaseRecyclerAdapter<Users, FriendsViewHolder>(options) {
            @Override
            protected void onBindViewHolder(@NonNull final FriendsViewHolder holder, int position, @NonNull Users model)
            {

               for(int i=0;i<=position;i++)
               {
                String userIDs = getRef(i).getKey();
                UsersRef.child(userIDs).addValueEventListener(new ValueEventListener() {
                    @Override
                    public void onDataChange(@NonNull DataSnapshot dataSnapshot)
                    {
                        String name = dataSnapshot.child("name").getValue().toString();
                        String number = dataSnapshot.child("phone").getValue().toString();

                        Log.d("USERNAME", name);

                        holder.username.setText(name);
                        holder.phone.setText(number);
                    }

                    @Override
                    public void onCancelled(@NonNull DatabaseError databaseError) {

                    }
                });
            }
           }

            @NonNull
            @Override
            public FriendsViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i)
            {
                View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.friend_list,viewGroup,false);
                FriendsViewHolder viewHolder = new FriendsViewHolder(view);
                return viewHolder;

            }

        };

该怎么办，这样我才能在我的回收站视图中显示所有节点