class HomePage extends StatefulWidget {
@override
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: IntrinsicWidth(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
RaisedButton(
onPressed: () {},
child: Text('Short'),
),
RaisedButton(
onPressed: () {},
child: Text('A bit Longer'),
),
RaisedButton(
onPressed: () {},
child: Text('The Longest text button'),
),
],
),
),
),
);
}
}
![](https://img2018.cnblogs.com/blog/1053296/201907/1053296-20190728090404103-1371595408.png)