flutter设置widget阴影

如何给控件设置阴影，目前知道的是有两种方式
PhysicalModel 里面有设置阴影方法

 Widget getItem(PetCardViewModel model) {
    return Container(
      margin: EdgeInsets.fromLTRB(14, 8, 14, 8),
      child: PhysicalModel(
        color: Colors.white,
        //z轴设置 关键
        elevation: 9,
        borderRadius: BorderRadius.circular(12),
        clipBehavior: Clip.antiAlias,
        //阴影颜色设置 关键
        shadowColor: Colors.black,
        child: Container(
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              getHeadImg(model),
              getUserInfo(model),
              getTitleInfo(model),
            ],
          ),
        ),
      ),
    );
  }

Container 里面有一个decoration属性设置阴影和圆角，背景颜色

 @override
  Widget build(BuildContext context) {
    return Container(
      margin: EdgeInsets.fromLTRB(16, 16, 16, 0),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(8),
        //主要用来设置阴影设置
        boxShadow: [
          BoxShadow(
            blurRadius: 6,
            spreadRadius: 4,
            color: Color.fromARGB(20, 0, 0, 0),
          ),
        ],
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: [
          this.renderCover(),
          this.renderUserInfo(),
          this.renderPublishContent(),
          this.renderInteractionArea(),
        ],
      ),
    );
  }