splash_screen.dart

class SplashScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new Container(
        color: Colors.white,
        child: new Column(
          crossAxisAlignment: CrossAxisAlignment.center,
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            new CircularProgressIndicator(),
          ],
        ));
  }
}