I am trying to use the flutter local notifications package and followed the documentation but having some issues on showcasing the notification on my flutter app.

I also tried to add this github code to my project as an alternative with no luck – https://github.com/vijayinyoutube/schedule_notification_app_demo/blob/master/lib/main.dart

[https://github.com/vijayinyoutube/schedule_notification_app_demo/blob/master/lib/home_page.dart]

homepage.dart –

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  tz.initializeTimeZones();
runApp(MyApp(currentpage: 'All'));
  openMyDatabase();
}

onPressed: () {
            WidgetsFlutterBinding.ensureInitialized();
            var reminder = NotificationsReminder();
            reminder.scheduleNotification();
}

notificationsreminder.dart –

class NotificationsReminder {
  late FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin;

  NotificationsReminder() {
    flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();

    var initializationSettingsAndroid =
        const AndroidInitializationSettings('@mipmap/ic_launcher');

    var initializationSettings =
        InitializationSettings(android: initializationSettingsAndroid);

    flutterLocalNotificationsPlugin.initialize(initializationSettings);

    _createNotificationChannel();
    _requestIOSPermissions();
  }

  Future<void> _createNotificationChannel() async {
    var details = const AndroidNotificationChannel(
      'your_channel_id',
      'your_channel_name',
      description: 'your channel description',
      importance: Importance.max,
    );

    await flutterLocalNotificationsPlugin
        .resolvePlatformSpecificImplementation<
            AndroidFlutterLocalNotificationsPlugin>()
        ?.createNotificationChannel(details);

  Future<void> scheduleNotification() async {
    print('Scheduled notification for 5 seconds later');
    await flutterLocalNotificationsPlugin.zonedSchedule(
        0,
        'Scheduled Notification',
        'This notification was scheduled to appear after 5 seconds.',
        tz.TZDateTime.now(tz.local).add(const Duration(seconds: 5)),
        const NotificationDetails(
          android: AndroidNotificationDetails(
              'your_channel_id', 'your_channel_name',
              channelDescription: 'your channel description',
              importance: Importance.max,
              priority: Priority.high,
              showWhen: false),
        ),
        androidScheduleMode: AndroidScheduleMode.exactAllowWhileIdle,
        uiLocalNotificationDateInterpretation:
            UILocalNotificationDateInterpretation.absoluteTime);
  }

}

AndroidManifest.xml –

   <receiver android:exported="false" android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationReceiver" />
        <receiver android:exported="false" android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver">
    
        <receiver android:exported="false" android:name="com.dexterous.flutterlocalnotifications.ActionBroadcastReceiver" />
 <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.VIBRATE"/>
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
    <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM"/>
    <uses-permission android:name="android.permission.USE_EXACT_ALARM" />
    <uses-permission android:name="android.permission.USE_FULL_SCREEN_INTENT" />