flutter timezone

_native_timezone是一个Flutter插件，用于获取操作系统的本地时区。它支持iOS和Android，并提供了许多有用的方法来处理日期和时间。以下是一些示例用法：

1. 获取本地时区名称：

import 'package:flutter_native_timezone/flutter_native_timezone.dart';

String timeZoneName = await FlutterNativeTimezone.getLocalTimezone();

2. 获取本地时间：

DateTime now = DateTime.now();

3. 将时间戳转换为DateTime：

DateTime date = DateTime.fromMillisecondsSinceEpoch(millisecondsSinceEpoch);

4. 将DateTime转换为时间戳：

int millisecondsSinceEpoch = date.millisecondsSinceEpoch;

5. 比较两个时间：

bool isBefore = date1.isBefore(date2);
bool isAfter = date1.isAfter(date2);
bool isAtSameMomentAs = date1.isAtSameMomentAs(date2);
int compareTo = date1.compareTo(date2);

6. 增加或减少时间：

DateTime newDate = date.add(Duration(days: 1));
DateTime newDate = date.subtract(Duration(hours: 2));

7. 计算两个时间之间的差异：

Duration difference = date1.difference(date2);
int hours = difference.inHours;

8. 获取日期和时间的各个部分：

int year = date.year;
int month = date.month;
int day = date.day;
int hour = date.hour;
int minute = date.minute;
int second = date.second;
int millisecond = date.millisecond;
int microsecond = date.microsecond;
int weekday = date.weekday;