import 'package:flutter/material.dart'; class ListPage extends StatefulWidget { final String listName; ListPage({this.listName}) : super(key: Key(listName)); @override _ListPageState createState() => _ListPageState(); } class _ListPageState extends State { @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: new Text(widget.listName), ), body: Center( child: RaisedButton( onPressed: () => Navigator.of(context).pop(), child: const Text("Go back")), ), ); } }