Flutter:获取一周的第一天和最后一天？

import 'package:intl/intl.dart';

void main() {
  DateTime now = DateTime.now();

  // 获取本周的第一天
  DateTime firstDayOfWeek = now.subtract(Duration(days: now.weekday - 1));
  
  // 获取本周的最后一天
  DateTime lastDayOfWeek = now.add(Duration(days: 7 - now.weekday));
  
  // 格式化日期为字符串
  DateFormat dateFormat = DateFormat('yyyy-MM-dd');
  String firstDayOfWeekStr = dateFormat.format(firstDayOfWeek);
  String lastDayOfWeekStr = dateFormat.format(lastDayOfWeek);

  print('本周的第一天：$firstDayOfWeekStr');
  print('本周的最后一天：$lastDayOfWeekStr');
}