basic way to implement of Animation in Flutter

This is the simplest example of animation in Flutter.

class Home extends StatefulWidget {
@override
HomeState createState() {
    return new HomeState();
}
}

class HomeState extends State<Home> with TickerProviderStateMixin {
AnimationController controller;

@override
void initState() {
    super.initState();
    controller = new AnimationController(
        vsync: this, duration: new Duration(milliseconds: 2000));
}

@override
Widget build(BuildContext context) {
    return new Scaffold(
    body: new Center(
        child: new Column(
        mainAxisSize: MainAxisSize.min,
        children: <Widget>[
            new RotationTransition(
            turns: new Tween(begin: 0.0, end: 1.0).animate(controller),
            child: new Container(
                width: 150.0,
                height: 150.0,
                color: Colors.blue,
            ),
            ),
            new MaterialButton(
            child: new Text('Start Animation'),
            onPressed: () {
                setState(() {
                controller.forward().then((_) {
                    controller.reverse();
                });
                });
            },
            )
        ],
        ),
    ),
    );
}
}

All I have used is RotationTransition and AnimationController