Flutter错误的toDate()转换

import 'package:intl/intl.dart';

DateTime utcDateTime = DateTime.now().toUtc();
DateTime localDateTime = utcDateTime.toLocal();
print(localDateTime.toDate());

DateTime? nullableDateTime;
DateTime date = nullableDateTime ?? DateTime.now();
print(date.toDate());

DateTime dateTimeWithTime = DateTime.now();
print(dateTimeWithTime);

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

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Flutter toDate Example')),
        body: Center(
          child: ElevatedButton(
            onPressed: () {
              _showDate();
            },
            child: Text('Show Date'),
          ),
        ),
      ),
    );
  }

  void _showDate() {
    DateTime? nullableDateTime = DateTime.now().toUtc();
    DateTime date = nullableDateTime ?? DateTime.now();
    String formattedDate = DateFormat('yyyy-MM-dd').format(date);
    showDialog(
      context: context,
      builder: (BuildContext context) {
        return AlertDialog(
          title: Text('Date'),
          content: Text(formattedDate),
        );
      },
    );
  }
}