Flutter BottomSheet

flutter_bottomsheet.dart

class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
  bool showFab = true;
  @override
  Widget build(BuildContext context) {
    return showFab
        ? FloatingActionButton(
            onPressed: () {
               var bottomSheetController = showBottomSheet(
                  context: context,
                  builder: (context) => Container(
                        color: Colors.grey[900],
                        height: 250,
                      ));
              showFoatingActionButton(false);
              bottomSheetController.closed.then((value) {
                showFoatingActionButton(true);
              });
            },
          )
        : Container();
  }
  void showFoatingActionButton(bool value) {
    setState(() {
      showFab = value;
    });
  }
}