How To Add Android Notification Channel Id For Flutter App To Fix Notification While App Is On Background

In my flutter app the function onResume and onLunch not working on android platform, while they work fine on IOS, i receive the following message on console instead of printed stri

Solution 1:

You should create a notification channel first, the plugin: flutter_local_notifications can create and remove notification channels.

First, initialize the plugin:

Future<void> initializeLocalNotifications() async {
  FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
  FlutterLocalNotificationsPlugin();
  // app_icon needs to be a added as a drawable resource to the// Android head projectvar initializationSettingsAndroid = AndroidInitializationSettings('app_icon');
  var initializationSettingsIOS = IOSInitializationSettings(
      onDidReceiveLocalNotification: onDidReceiveLocalNotification);
  var initializationSettings = InitializationSettings(
      initializationSettingsAndroid, initializationSettingsIOS);
  await flutterLocalNotificationsPlugin.initialize(initializationSettings,
      onSelectNotification: selectNotification);
}

Second, create notification channel using this plugin:

Future<void> _createNotificationChannel(String id, String name,
    String description) async {
  final flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
  var androidNotificationChannel = AndroidNotificationChannel(
    id,
    name,
    description,
  );
  await flutterLocalNotificationsPlugin
      .resolvePlatformSpecificImplementation<
      AndroidFlutterLocalNotificationsPlugin>()
      ?.createNotificationChannel(androidNotificationChannel);
}

Now you have two options:

1. Create a channel with the default id you already defined in AndroidManifest.xml

2. Choose your own channel ids and send each notification to a specific channel by embedding the channel id into your FCM notification message. To do so, add channel_id tag to your notification under notification tag, under android tag.

Here is a sample notification message from Firebase Functions with custom notification channel id:

'notification': {
        'title': your_title,
        'body': your_body,
    },
    'android': {
        'notification': {
            'channel_id': your_channel_id,
        },
    },

Solution 2:

have you created default_notification_channel_id ?

"W/FirebaseMessaging(24847): Missing Default Notification Channel metadata in AndroidManifest. Default value will be used."

You have this warning when you don't set the channel_id in the payload of the notification