class MyAppextends StatelessWidget {
@override
Widgetbuild(BuildContext context) {
return new MaterialApp(
title:'RotatedBox旋转盒子示例',
home:Scaffold(
appBar:AppBar(
title:Text(
'RotatedBox旋转盒子示例',
style:TextStyle(color: Colors.white),
),
),
body:Center(
child:RotatedBox(
quarterTurns: -3,//旋转次数，一次为90度
child:Text(
'RotatedBox旋转盒子',
style:TextStyle(fontSize:28.0),
),
),
),
),
);
}
}