MyCustom Implicit Animation

gistfile1.txt

class MyCustomImplicitAnimation extends StatelessWidget {
  const MyCustomImplicitAnimation({Key? key}) : super(key: key);

  static final dimensionsTween = Tween<double>(begin: 100.0, end: 200.0);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: TweenAnimationBuilder<double>(
        tween: dimensionsTween,
        duration: const Duration(seconds: 1),
        builder: (context, value, child) {
          return Center(
            child: Container(
              color: Colors.blue,
              height: value,
              width: value,
            ),
          );
        },
      ),
    );
  }
}