How can use Navigator with isSelected by flutter

Question

Relating to isSelected and Navigator, how can I use these function together?

Now I have some error happened...

add_page.dart

class _AddPage extends StatefulWidget {

  @override   State<StatefulWidget> createState() => AddPage();

}

main.dart

        return FloatingActionButton(
          onPressed: () async {
            await Navigator.push(
              context,
              MaterialPageRoute(builder: (context) => AddPage(model),
              ),
            );
          },

Answer 1

If you want to pass the MainModel model to your Addpage class, you could just pass it as such:

class AddPage extends StatefulWidget {
  final MainModel model;

  const AddPage(this.model);

  @override
  _AddPageState createState() => _AddPageState();
}

class _AddPageState extends State<AddPage> {
  @override
  Widget build(BuildContext context) {
    // Your widget tree
    // ...

  }
}

But you could just push the AddPage screen as you did, and retrieve the MainModel model with a Consumer from your context, as you already did.