class MyApp extends StatelessWidget{
@override
Widget build(BuildContextcontext ){
var stack =new Stack(
fit:StackFit.expend,//铺满整个屏幕
alignment: const FractionalOffset(0.5,0.8),//层叠对齐方式X，Y 轴从0-1
children: [
new CircleAvatar(
backgroundImage:new NetworkImage('http://jspang.com/static//myimg/blogtouxiang.jpg'),
radius:100.0,
),
new Container(
decoration:newBoxDecoration(
color:Colors.lightBlue,
),
padding:EdgeInsets.all(5.0),
child:new Text('JSPang技术胖'),
)
],
);
return MaterialApp(
title:'ListViewwidget',
home:Scaffold(
appBar:newAppBar(
title:newText('垂直方向布局'),
),
body:Center(child:stack),
),
);
}
}
