如何在Fluttter的上午9:00到下午16:30之间在控制台中打印消息？

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    // 获取当前时间
    DateTime now = DateTime.now();
    
    // 设置上午9:00和下午16:30的时间范围
    DateTime startTime = DateTime(now.year, now.month, now.day, 9, 0);
    DateTime endTime = DateTime(now.year, now.month, now.day, 16, 30);
    
    // 检查当前时间是否在范围内
    if (now.isAfter(startTime) && now.isBefore(endTime)) {
      print('当前时间在上午9:00到下午16:30之间');
    } else {
      print('当前时间不在上午9:00到下午16:30之间');
    }
    
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Print Message'),
        ),
        body: Center(
          child: Text('请查看控制台输出'),
        ),
      ),
    );
  }
}