Flutter Local Notifications Plugin: createNotificationChannel function not working - flutter

Question

I am trying to create an android notification channel with flutter_local_notifications: ^5.0.0+4
Put it looks like it does not work as should be.
I wrote a code using getNotificationChannels to verify if the channel was created successfully
Please take a look to my code
Future<void> _getNotificationChannels() async {
await flutterLocalNotificationsPlugin.resolvePlatformSpecificImplementation<
AndroidFlutterLocalNotificationsPlugin>()?.createNotificationChannel(AndroidNotificationChannel(
'high_importance_channel', // id
'High Importance Notifications', // title
'This channel is used for important notifications', // description
importance: Importance.max,
));
final Widget notificationChannelsDialogContent =
await _getNotificationChannelsDialogContent();
await showDialog<void>(
context: context,
builder: (BuildContext context) => AlertDialog(
content: notificationChannelsDialogContent,
actions: <Widget>[
TextButton(
onPressed: () {
Navigator.of(context).pop();
},
child: const Text('OK'),
),
],
),
);
}
Future<Widget> _getNotificationChannelsDialogContent() async {
try {
final List<AndroidNotificationChannel>? channels =
await flutterLocalNotificationsPlugin
.resolvePlatformSpecificImplementation<
AndroidFlutterLocalNotificationsPlugin>()!
.getNotificationChannels();
return Container(
width: double.maxFinite,
child: ListView(
children: <Widget>[
const Text(
'Notifications Channels',
style: TextStyle(fontWeight: FontWeight.bold),
),
const Divider(color: Colors.black),
if (channels?.isEmpty ?? true)
const Text('No notification channels')
else
for (AndroidNotificationChannel channel in channels!)
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text('id: ${channel.id}\n'
'name: ${channel.name}\n'
'description: ${channel.description}\n'
'groupId: ${channel.groupId}\n'
'importance: ${channel.importance.value}\n'
'playSound: ${channel.playSound}\n'
'sound: ${channel.sound?.sound}\n'
'enableVibration: ${channel.enableVibration}\n'
'vibrationPattern: ${channel.vibrationPattern}\n'
'showBadge: ${channel.showBadge}\n'
'enableLights: ${channel.enableLights}\n'
'ledColor: ${channel.ledColor}\n'),
const Divider(color: Colors.black),
],
),
],
),
);
} on PlatformException catch (error) {
return Text(
'Error calling "getNotificationChannels"\n'
'code: ${error.code}\n'
'message: ${error.message}',
);
}
}
As you can see I am using createNotificationChannel to create a notifications channel then I am using getNotificationChannels to see if the channel was created successfully.
I am getting always "No notification channels" as a result in the dialog.
I do not know what is wrong with my code,
Thanks for your help

Answer 1

The problem was the Android version that I am using for testing,
Notification channels is a concept that is specific Android 8 or newer, which is why the API docs state that the method to create channels is only for those versions of Android