(颤动)自定义CupertinoDatePicker是否显示星期几并更改位置？

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

class CustomCupertinoDatePicker extends StatefulWidget {
  @override
  _CustomCupertinoDatePickerState createState() =>
      _CustomCupertinoDatePickerState();
}

class _CustomCupertinoDatePickerState extends State<CustomCupertinoDatePicker> {
  DateTime _selectedDate = DateTime.now();

  @override
  Widget build(BuildContext context) {
    return Container(
      alignment: Alignment.topCenter, // 调整日期选择器的垂直位置
      child: Column(
        children: [
          Text(
            _getWeekdayText(_selectedDate.weekday), // 显示星期几文本
            style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
          ),
          CupertinoDatePicker(
            mode: CupertinoDatePickerMode.date,
            initialDateTime: _selectedDate,
            onDateTimeChanged: (DateTime newDate) {
              setState(() {
                _selectedDate = newDate;
              });
            },
          ),
        ],
      ),
    );
  }

  String _getWeekdayText(int weekday) {
    switch (weekday) {
      case 1:
        return '星期一';
      case 2:
        return '星期二';
      case 3:
        return '星期三';
      case 4:
        return '星期四';
      case 5:
        return '星期五';
      case 6:
        return '星期六';
      case 7:
        return '星期日';
      default:
        return '';
    }
  }
}

// 在使用该自定义日期选择器的页面中，可以像使用其他Widget一样使用CustomCupertinoDatePicker：
class MyPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('自定义日期选择器'),
      ),
      body: Center(
        child: CustomCupertinoDatePicker(),
      ),
    );
  }
}