[Flutter] Unable to Update Live Activities in Background and Lock Screen Using FCM Push...

I'm working on a Flutter application that uses Firebase Cloud Messaging (FCM) to send push notifications. I want to update live activities whenever I receive a push notification, but I'm facing an issue where the live activities are not updating when the app is in the background or on the lock screen.

Here’s a simplified version of my code:

FirebaseMessaging.onMessage.listen((message) async {
final notification = message.notification;
if (Platform.isIOS) {
final _liveActivitiesPlugin = LiveActivities();
_liveActivitiesPlugin.init(appGroupId: "group.new_activity");

SharedPreferences prefs = await SharedPreferences.getInstance();
String? activityId = prefs.getString('liveActivityId');

if (activityId != null) {
await _liveActivitiesPlugin.updateActivity(
activityId,
{'soc': '${++soc}'},
);
}
}


int soc = 0;
Future<void> handleBackgroundMessage(RemoteMessage message) async {
print('Title: ${message.notification?.title}');
print('body: ${message.notification?.body}');
print('Payload: ${message.data}');
if (Platform.isIOS) {
final _liveActivitiesPlugin = LiveActivities();
_liveActivitiesPlugin.init(appGroupId: "group.new_activity");
SharedPreferences prefs = await SharedPreferences.getInstance();
String? activityId = prefs.getString('liveActivityId');
if (activityId != null) {
await _liveActivitiesPlugin.updateActivity(
activityId,
{'soc': '${++soc}'},
);
}
}
}

Problem:


I am trying to update the live activities using FCM push notifications, but it is not updating when the app is in the background or on the lock screen.

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