import 'package:flutter/cupertino.dart'; class PickerPage extends StatelessWidget { const PickerPage({super.key}); @override Widget build(BuildContext context) { return CupertinoPageScaffold( navigationBar: const CupertinoNavigationBar( middle: Text('Picker'), ), child: Center( child: SizedBox( height: 200, child: CupertinoPicker( itemExtent: 32, onSelectedItemChanged: (int index) {}, children: const [ Text('One'), Text('Two'), Text('Three'), ], ), ), ), ); } }