Android listview不能在android中使用getFilter()更新

<androidx.recyclerview.widget.RecyclerView
    android:id="@+id/recyclerView"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

<SearchView
    android:id="@+id/searchView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

RecyclerView recyclerView = findViewById(R.id.recyclerView);
SearchView searchView = findViewById(R.id.searchView);

// 初始化适配器
MyAdapter adapter = new MyAdapter(dataList);
recyclerView.setAdapter(adapter);

// 设置布局管理器
recyclerView.setLayoutManager(new LinearLayoutManager(this));

// 设置搜索过滤监听器
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
    @Override
    public boolean onQueryTextSubmit(String query) {
        return false;
    }

    @Override
    public boolean onQueryTextChange(String newText) {
        adapter.getFilter().filter(newText);
        return true;
    }
});

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> implements Filterable {
    private List<String> dataList;
    private List<String> filteredList;

    public MyAdapter(List<String> dataList) {
        this.dataList = dataList;
        this.filteredList = dataList;
    }

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

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        String item = filteredList.get(position);
        holder.textView.setText(item);
    }

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

    @Override
    public Filter getFilter() {
        return new Filter() {
            @Override
            protected FilterResults performFiltering(CharSequence constraint) {
                String query = constraint.toString().toLowerCase();

                List<String> filtered = new ArrayList<>();
                for (String item : dataList) {
                    if (item.toLowerCase().contains(query)) {
                        filtered.add(item);
                    }
                }

                FilterResults results = new FilterResults();
                results.values = filtered;
                results.count = filtered.size();
                return results;
            }

            @Override
            protected void publishResults(CharSequence constraint, FilterResults results) {
                filteredList = (List<String>) results.values;
                notifyDataSetChanged();
            }
        };
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {
        TextView textView;

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