如何分隔SearchView项以筛选RecyclerView

<LinearLayout
    ...>

    <SearchView
        android:id="@+id/searchView"
        ... />

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

</LinearLayout>

public class MainActivity extends AppCompatActivity implements SearchView.OnQueryTextListener {

    private SearchView searchView;
    private RecyclerView recyclerView;
    private MyAdapter adapter;
    private List<Item> itemList;

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

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

        searchView.setOnQueryTextListener(this);

        // 初始化RecyclerView和适配器
        itemList = new ArrayList<>();
        // 添加数据到itemList

        adapter = new MyAdapter(itemList);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        recyclerView.setAdapter(adapter);
    }

    @Override
    public boolean onQueryTextSubmit(String query) {
        return false;
    }

    @Override
    public boolean onQueryTextChange(String newText) {
        // 根据输入的文本筛选RecyclerView的项
        List<Item> filteredList = filter(itemList, newText);
        adapter.setFilter(filteredList);
        return true;
    }

    private List<Item> filter(List<Item> itemList, String query) {
        // 根据输入的文本筛选RecyclerView的项
        List<Item> filteredList = new ArrayList<>();
        // 进行筛选逻辑

        return filteredList;
    }
}