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')], ), ), ), ); } }