如何使用ItemTouchHelper.Callback在水平回收器视图的边界上拖放项目？

public class MyItemTouchHelperCallback extends ItemTouchHelper.Callback {
    // 指定支持的拖动和滑动方向
    @Override
    public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
        int dragFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN;
        int swipeFlags = ItemTouchHelper.START | ItemTouchHelper.END;
        return makeMovementFlags(dragFlags, swipeFlags);
    }

    // 当项目被拖动时调用
    @Override
    public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
        // 更新数据集合的顺序
        // recyclerView.getAdapter().notifyItemMoved(viewHolder.getAdapterPosition(), target.getAdapterPosition());
        return true;
    }

    // 当项目被滑动时调用
    @Override
    public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
        // 执行滑动后的操作，比如删除项目
        // recyclerView.getAdapter().notifyItemRemoved(viewHolder.getAdapterPosition());
    }
}

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> implements ItemTouchHelperAdapter {
    // 实现ItemTouchHelperAdapter接口的方法
    @Override
    public void onItemMove(int fromPosition, int toPosition) {
        // 更新数据集合的顺序
        // Collections.swap(dataList, fromPosition, toPosition);
        // notifyItemMoved方法可以在这里调用
    }

    @Override
    public void onItemDismiss(int position) {
        // 执行滑动后的操作，比如删除项目
        // dataList.remove(position);
        // notifyItemRemoved方法可以在这里调用
    }

    // ...
}

public class MainActivity extends AppCompatActivity {
    private RecyclerView recyclerView;
    private MyAdapter adapter;
    private ItemTouchHelper itemTouchHelper;

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

        recyclerView = findViewById(R.id.recyclerView);
        adapter = new MyAdapter();
        recyclerView.setAdapter(adapter);

        ItemTouchHelper.Callback callback = new MyItemTouchHelperCallback();
        itemTouchHelper = new ItemTouchHelper(callback);
        itemTouchHelper.attachToRecyclerView(recyclerView);
    }
}