flutter_local_notification IOSNotificationDetails and DarwinNotificationDetails both not working - flutter

Question

I'm pretty new to learn flutter and I'm trying to push notification through flutter_local_notifications and firebase_messaging.
My flutter version is 3.3.9
Here's other pub version:
firebase_core: ^2.4.0
flutter_local_notifications: ^12.0.4
firebase_messaging: ^14.1.4
http: ^0.13.4
cloud_firestore: ^4.2.0
I've searched that if using flutter_local_notifications version 10 or above, should use DarwinNotificationDetails instead of IOSNotificationDetails. However both of them are NOT working in my case. All relative codes are below.
import flutter_local_notification:
import 'package:flutter_local_notifications/flutter_local_notifications.dart';
declare it:
FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
If I'm using DarwinNotificationDetails, vscode will show error like this:
The name 'DarwinNotificationDetails' isn't a class.
Try correcting the name to match an existing class.
DarwinNotificationDetails error
If I'm using IOSNotificationDetails, it will show error like below when I try to launch device without debugging.
IOSNotificationDetails error
I've try to run flutter clean and delete pubspec.lock then reinstall all pub but not working. Also try to clean boot or wipe data to android device and still not working.
Please kindly help to let flutter_local_notification working normally.
Thanks a lot.
full code:
final android = AndroidInitializationSettings('#mipmap/ic_launcher');
final ios = DarwinInitializationSettings(); // get error here
final initSettings = InitializationSettings(android: android, iOS: ios);
flutterLocalNotificationsPlugin.initialize(
initSettings,
);
FirebaseMessaging.onMessage.listen((RemoteMessage message) async {
print('......message: ${message.notification?.title}--${message.notification?.body}');
BigTextStyleInformation bigTextStyleInformation = BigTextStyleInformation(
message.notification!.body.toString(),
htmlFormatBigText: true,
contentTitle: message.notification!.title.toString(),
htmlFormatContentTitle: true,
);
AndroidNotificationDetails androidPlatformChannelSpecitics = AndroidNotificationDetails(
'dbfood',
'dbfood',
importance: Importance.high,
styleInformation: bigTextStyleInformation,
priority: Priority.high,
playSound: true,
);
NotificationDetails platformChannelSpecifics = NotificationDetails(
android: androidPlatformChannelSpecitics,
iOS: DarwinNotificationDetails(), // also get error here
);
await flutterLocalNotificationsPlugin.show(
0,
message.notification?.title,
message.notification?.body,
platformChannelSpecifics,
payload: message.data['body'],
);
});

Answer 1

Const variables must be initialized with a constant value.
Try changing the initializer to be a constant expression.
You have to declare it as static const rather than just const . static , final , and const mean entirely distinct things in Dart: static means a member is available on the class itself instead of on instances of the class. That's all it means, and it isn't used for anything else. static modifies members
add static keyword before const :
static const DarwinNotificationDetails()