有什么办法可以控制Android中拖动阴影的可见性吗？

View dragView = findViewById(R.id.drag_view);
dragView.setOnLongClickListener(new View.OnLongClickListener() {
    @Override
    public boolean onLongClick(View v) {
        // 创建拖动阴影的Builder
        View.DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(v) {
            @Override
            public void onDrawShadow(Canvas canvas) {
                // 设置拖动阴影的透明度
                Paint paint = new Paint();
                paint.setAlpha(0); // 设置为0表示完全透明，不可见
                canvas.drawRect(0, 0, getView().getWidth(), getView().getHeight(), paint);
            }
        };

        // 开始拖动操作
        v.startDrag(null, shadowBuilder, null, 0);
        return true;
    }
});