如何在ItemTouchHelper中显示图标？

public class CustomItemDecoration extends RecyclerView.ItemDecoration {
    private Drawable icon;

    public CustomItemDecoration(Context context, @DrawableRes int iconRes) {
        icon = ContextCompat.getDrawable(context, iconRes);
    }

    @Override
    public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
        super.onDraw(c, parent, state);

        int itemCount = parent.getAdapter().getItemCount();
        for (int i = 0; i < itemCount; i++) {
            View child = parent.getChildAt(i);
            RecyclerView.ViewHolder viewHolder = parent.getChildViewHolder(child);

            // 根据ViewHolder的状态来确定要绘制的图标
            if (viewHolder instanceof YourViewHolder) {
                YourViewHolder yourViewHolder = (YourViewHolder) viewHolder;
                if (yourViewHolder.isDragging()) {
                    // 绘制拖拽图标
                    int left = child.getLeft() + yourViewHolder.itemView.getPaddingLeft();
                    int top = child.getTop() + yourViewHolder.itemView.getPaddingTop();
                    int right = left + icon.getIntrinsicWidth();
                    int bottom = top + icon.getIntrinsicHeight();
                    icon.setBounds(left, top, right, bottom);
                    icon.draw(c);
                } else if (yourViewHolder.isSwiping()) {
                    // 绘制滑动图标
                    // ...
                }
            }
        }
    }
}

RecyclerView recyclerView = findViewById(R.id.recyclerView);
recyclerView.addItemDecoration(new CustomItemDecoration(this, R.drawable.icon));