my_timezone 0.1.0

A Flutter plugin for local IANA time zone details, available identifiers, and change events on Android, iOS, macOS, and web.

example/lib/main.dart

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:my_timezone/my_timezone.dart';

void main() => runApp(const MyApp());

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => MyAppState();
}

class MyAppState extends State<MyApp> {
  TimezoneInfo? _timezoneInfo;
  List<String> _availableTimezones = <String>[];
  StreamSubscription<TimezoneInfo>? _timezoneSubscription;

  @override
  void initState() {
    super.initState();
    _timezoneSubscription = MyTimezone.onTimezoneChanged.listen(
      _updateTimezone,
      onError: (Object error) {
        debugPrint('Could not observe timezone changes: $error');
      },
    );
    _initData();
  }

  @override
  void dispose() {
    _timezoneSubscription?.cancel();
    super.dispose();
  }

  Future<void> _initData() async {
    try {
      _timezoneInfo = await MyTimezone.getLocalTimezoneInfo();
    } on PlatformException catch (error) {
      debugPrint('Could not get the local timezone: $error');
    }
    try {
      _availableTimezones = await MyTimezone.getAvailableTimezones();
      _availableTimezones.sort();
    } on PlatformException catch (error) {
      debugPrint('Could not get available timezones: $error');
    }
    if (mounted) {
      setState(() {});
    }
  }

  void _updateTimezone(TimezoneInfo timezoneInfo) {
    if (!mounted) return;
    setState(() => _timezoneInfo = timezoneInfo);
  }

  @override
  Widget build(BuildContext context) {
    final timezoneInfo = _timezoneInfo;
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Local timezone app')),
        body: Column(
          children: <Widget>[
            Text(
              'Local timezone: ${timezoneInfo?.identifier ?? 'Unknown'}\n'
              'Name: ${timezoneInfo?.localizedName ?? 'Unavailable'}\n'
              'Abbreviation: ${timezoneInfo?.abbreviation ?? 'Unavailable'}\n'
              'UTC offset: ${timezoneInfo?.utcOffset ?? 'Unavailable'}\n'
              'DST active: '
              '${timezoneInfo?.isDaylightSavingTime ?? 'Unavailable'}\n',
            ),
            const Text('Available timezones:'),
            Expanded(
              child: ListView.builder(
                itemCount: _availableTimezones.length,
                itemBuilder: (_, index) => Text(_availableTimezones[index]),
              ),
            ),
          ],
        ),
      ),
    );
  }
}