class _BallBodyState extends State<BallBody> {
  List<String> balls = [
    'images/ball1.png',
    'images/ball2.png',
    'images/ball3.png',
    'images/ball4.png',
    'images/ball5.png'
  ];
  int _current = 0;
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text('Magic 8 Ball'),
        ),
        body: InkWell(
          onTap: () {
            setState(() {
              _current = Random().nextInt(5);
            });
          },
          child: AnimatedContainer(
            duration: Duration(seconds: 2),
            child: Center(
              child: Image.asset(balls[_current]),
            ),
          ),
        ));
  }
}