I am using Flutter flutter_local_notifications package in an app targeting Android.

I’ve set up the example app and am running it in Android emulator (API33).

When I use Show plain notification with payload it works, but when I click Schedule notification to appear in 5 seconds, nothing! The notification does not appear. There is no error either.

I’ve changed the androidScheduleMode to use “inexact” mode so I don’t need additional permissions:

 Future<void> _zonedScheduleNotification() async {
    final nowDttm =
        tz.TZDateTime.now(tz.local).add(const Duration(seconds: 5));
    print('Scheduled: $nowDttm');

    await flutterLocalNotificationsPlugin.zonedSchedule(
        0,
        'scheduled title',
        'scheduled body',
        nowDttm,
        const NotificationDetails(
            android: AndroidNotificationDetails(
                'your channel id', 'your channel name',
                channelDescription: 'your channel description')),
        androidScheduleMode: AndroidScheduleMode.inexactAllowWhileIdle, //changed from exact
        uiLocalNotificationDateInterpretation:
            UILocalNotificationDateInterpretation.absoluteTime);
  }

The notification that does work is using this method:

  Future<void> _showNotification() async {
    const AndroidNotificationDetails androidNotificationDetails =
        AndroidNotificationDetails('your channel id', 'your channel name',
            channelDescription: 'your channel description',
            importance: Importance.max,
            priority: Priority.high,
            ticker: 'ticker');
    const NotificationDetails notificationDetails =
        NotificationDetails(android: androidNotificationDetails);
    await flutterLocalNotificationsPlugin.show(
        id++, 'plain title', 'plain body', notificationDetails,
        payload: 'item x');
  }

App has notification permission as shown by the other type of notification working.
Other’s had problems with timezones but this is initialized correctly like so:

tz.initializeTimeZones();
  final String timeZoneName = await FlutterTimezone.getLocalTimezone();
  tz.setLocalLocation(tz.getLocation(timeZoneName));

What am I missing here? How do I troubleshoot?