class MyApp extends StatelessWidget { void _showModalBottomSheet(BuildContext context) { showModalBottomSheet( context: context, builder: (context) { return _BottomSheetContent(); } ); } @override Widget build(BuildContext context) { ... return MaterialApp( title: 'Handa', home: Scaffold( ... floatingActionButton: FloatingActionButton( child: const Icon(Icons.add), onPressed: () { _showModalBott..
