recyclerview选择如何侦听event onSelectionEnter和event onSelectionExit

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    private List<Item> itemList;
    private OnSelectionListener selectionListener;

    public MyAdapter(List<Item> itemList, OnSelectionListener selectionListener) {
        this.itemList = itemList;
        this.selectionListener = selectionListener;
    }

    // ...

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        // 绑定数据到ViewHolder

        // 设置item的选中状态
        boolean isSelected = itemList.get(position).isSelected();
        if (isSelected) {
            selectionListener.onSelectionEnter(position);
        } else {
            selectionListener.onSelectionExit(position);
        }
    }

    // ...

    public interface OnSelectionListener {
        void onSelectionEnter(int position);
        void onSelectionExit(int position);
    }

    // ...
}

public class MainActivity extends AppCompatActivity implements MyAdapter.OnSelectionListener {
    private RecyclerView recyclerView;
    private MyAdapter adapter;

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

        // 初始化RecyclerView和Adapter

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

    // ...

    @Override
    public void onSelectionEnter(int position) {
        // 处理item选中事件
    }

    @Override
    public void onSelectionExit(int position) {
        // 处理item取消选中事件
    }
}