带有封面图像和头像的Flutter配置文件页面

Question

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我想用封面图像和个人资料图像制作个人资料页面。我需要把头像堆叠在封面照片在底部。请参考上面的照片。

下面是我到目前为止所拥有的代码

class AccountPageState extends State<AccountPage> {    
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        height: 170.0,
        width: double.infinity,
        decoration: BoxDecoration(
            image: DecorationImage(
                image: AssetImage("assets/images/erev/background.png"),
                fit: BoxFit.cover,
            ),
            boxShadow: [new BoxShadow(color: Colors.black, blurRadius: 8.0)],
            color: Colors.green),
        child: Column(
          children: <Widget>[
            Padding(
              padding: const EdgeInsets.only(
                  top: 60.0, bottom: 18.0, right: 18.0, left: 18.0),
              child: Row(
                children: <Widget>[
                  Container(
                    height: 60.0,
                    width: 60.0,
                    decoration: BoxDecoration(
                        shape: BoxShape.circle,
                        image: DecorationImage(
                          image: new AssetImage("assets/images/erev/admin.jpeg"),
                           fit: BoxFit.cover
                      )
                    ),
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }
}