flutter 自定义card阴影效果及card使用

new Card(
    elevation: 15.0, //设置阴影
    shape: const RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(14.0))), //设置圆角
    child: new Column( // card只能有一个widget，但这个widget内容可以包含其他的widget
     children: [
      new ListTile(
       title: new Text('标题',
         style: new TextStyle(fontWeight: FontWeight.w500)),
       subtitle: new Text('子标题'),
       leading: new Icon(
        Icons.restaurant_menu,
        color: Colors.blue[500],
       ),
      ),
      new Divider(),
      new ListTile(
       title: new Text('内容一',
         style: new TextStyle(fontWeight: FontWeight.w500)),
       leading: new Icon(
        Icons.contact_phone,
        color: Colors.blue[500],
       ),
      ),
      new ListTile(
       title: new Text('内容二'),
       leading: new Icon(
        Icons.contact_mail,
        color: Colors.blue[500],
       ),
      ),
     ],
    ),
    ),