i am creating a app, in which i want the app to send a notification at a particular time.

I am using flutter_local_notification plugin: 17.2.1.

the notification is getting scheduled , but never gets dispatched.

First I thought the system is not scheduling the notification. To confirm this I added a button to list , all the pending alarm in the system.

when I schedule a notification ,and click to see if that alarm in system list of scheduled notification, it shows that 1 notification is scheduled, but after the scheduled time is passed, then also, it shows that alarm notification in the system, That means that notification never got dispatched.

I have checked the apps battery usage and background usage is allowed. Also in notification permission, notifications are also allowed.

But, I dont know what the issue is.

Here is my AndroidManifest file code specific to notifiaction.

test Notification button logs are as below:

I/flutter ( 7766): TEST: Scheduling test notification for 2025-11-24 23:34:12.491086

I/flutter ( 7766): Scheduling for: 2025-11-24 23:34:12.491086+0530 (Timezone: Asia/Calcutta)

I/flutter ( 7766): Notification Scheduled: ID 999999 at 2025-11-24 23:34:12.491086

Below is code to schedule a Alarm.

Future scheduleNotification({
    required int id,
    required String title,
    required String body,
    required DateTime scheduledTime,
    String payload = '',
  }) async {
    if (!(await Permission.notification.isGranted)) {
       print("Cannot schedule notification: Notification Permission NOT GRANTED.");
       return;
    }
    if (!(await Permission.scheduleExactAlarm.isGranted)) {
      print("Cannot schedule notification: Exact Alarm Permission NOT GRANTED.");
      return;
    }

    try {
      await _flutterLocalNotificationsPlugin.zonedSchedule(
        id,
        title,
        body,
        _nextInstanceOfTime(scheduledTime),
        const NotificationDetails(
          android: AndroidNotificationDetails(
            'Test_Notification_id_v2',
            'Test Notification',
            channelDescription: 'Channel for Test Notification',
            importance: Importance.max,
            priority: Priority.high,
            ticker: 'ticker',
          ),
          iOS: DarwinNotificationDetails(
            presentAlert: true,
            presentBadge: true,
            presentSound: true,
          ),
        ),
        androidScheduleMode: AndroidScheduleMode.exactAllowWhileIdle,
        uiLocalNotificationDateInterpretation: UILocalNotificationDateInterpretation.absoluteTime,
        payload: payload,
      );
      print('Notification Scheduled: ID $id at $scheduledTime');
    } catch (e) {
      print('Error scheduling notification: $e');
    }
  }

Can anyone help me with this issue?