title: Flutter local notification doesn't work for iOS
body: <p>Hello flutter newbie here! I'm using flutter local notifications and adding the default code to my app. It works in Android but doesn't work in iOS. any idea why? </p>
  
  <p>I tried with both the iOS simulator for iPhone 8 and iPhone 11. It works on my android emulator which is a Pixel 3 API 29.</p>
  
  <p>I have also enabled the Notifications in iOS (Settings>this app>Notifications) for this app and gave the permissions.</p>
  
  <p>For Android I have added permission requests in AndroidManifest.xml.</p>
  
  <pre><code>import 'package:flutter/material.dart';
  import 'package:flutter_local_notifications/flutter_local_notifications.dart';
  
  
  class AppNotification extends StatefulWidget {
    static const String id = 'app_notification';
  
    @override
    _AppNotificationState createState() =&gt; _AppNotificationState();
  }
  
  class _AppNotificationState extends State&lt;AppNotification&gt; {
    FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin;
  
    @override
    void initState() {
      super.initState();
      flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
      var android = AndroidInitializationSettings('app_icon');
      var iOS = IOSInitializationSettings();
      var initSettings = InitializationSettings(android, iOS);
  
      flutterLocalNotificationsPlugin.initialize(initSettings,
          onSelectNotification: onSelectNotification);
    }
  
    Future onSelectNotification(String payload) async {
      debugPrint("payload : $payload");
      showDialog(
        context: context,
        builder: (_) {
          return AlertDialog(
            title: Text("PayLoad"),
            content: Text("Payload : $payload"),
          );
        },
      );
    }
  
    @override
    Widget build(BuildContext context) {
      return Scaffold(
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: &lt;Widget&gt;[
              FlatButton(
                child: Text('Notification'),
                onPressed: _showNotificationWithDefaultSound,
              ),
              FlatButton(
                onPressed: () {
                  Navigator.pop(context);
                },
                child: Text('back'),
              )
            ],
          ),
        ),
      );
    }
  
    // TODO iOS doesn't work
  
    Future _showNotificationWithDefaultSound() async {
      var androidPlatformChannelSpecifics = new AndroidNotificationDetails(
          'your channel id', 'your channel name', 'your channel description',
          importance: Importance.Max, priority: Priority.High);
      var iOSPlatformChannelSpecifics = new IOSNotificationDetails();
      var platformChannelSpecifics = new NotificationDetails(
          androidPlatformChannelSpecifics, iOSPlatformChannelSpecifics);
      await flutterLocalNotificationsPlugin.show(
        0,
        'New Post',
        'How to Show Notification in Flutter',
        platformChannelSpecifics,
        payload: 'Default_Sound',
      );
    }
  </code></pre>