Progress

class Progress extends StatefulWidget {
  @override
  State<Progress> createState() => ProgressState();
}
 
class ProgressState extends State<Progress> {
  double value = 0.2;
 
  @override
  void initState() {
    Timer(const Duration(milliseconds: 800), () => setState(() => value = 0.7));
    super.initState();
  }
 
  @override
  Widget build(BuildContext context) => Column(
    mainAxisAlignment: MainAxisAlignment.center,
    children: [FProgress(value: value)],
  );
}