class AppBarApp extends StatelessWidget { const AppBarApp({super.key}); @override Widget build(BuildContext context) { return const MaterialApp( home: AppBarExample(), ); } } class AppBarExample extends StatelessWidget { const AppBarExample({super.key}); @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: const Text('AppBar Demo'), actions: <Widget>[ IconButton( icon: const Icon(Icons.add_alert), tooltip: 'Show Snackbar', onPressed: () { ScaffoldMessenger.of(context).showSnackBar( const SnackBar(content: Text('This is a snackbar'))); }, ), IconButton( icon: const Icon(Icons.navigate_next), tooltip: 'Go to the next page', onPressed: () { Navigator.push(context, MaterialPageRoute<void>( builder: (BuildContext context) { return Scaffold( appBar: AppBar( title: const Text('Next page'), ), body: const Center( child: Text( 'This is the next page', style: TextStyle(fontSize: 24), ), ), ); }, )); }, ), ], ), body: const Center( child: Text( 'This is the home page', style: TextStyle(fontSize: 24), ), ), ); } }