Flutter: Push notifications even if the app is closed

Question

I have built an application with flutter that works like a reminder.
How can I display notifications to the user even though the app is closed?

Answer 1

You can use scheduled notifications in flutter.

 var scheduledNotificationDateTime =
        new DateTime.now().add(new Duration(seconds: 5));
  var androidPlatformChannelSpecifics =
     new AndroidNotificationDetails('your other channel id',
    'your other channel name', 'your other channel description');
  var iOSPlatformChannelSpecifics =
   new IOSNotificationDetails();
   NotificationDetails platformChannelSpecifics = new 
  NotificationDetails(
   androidPlatformChannelSpecifics, iOSPlatformChannelSpecifics);
  await flutterLocalNotificationsPlugin.schedule(
 0,
 'scheduled title',
 'scheduled body',
 scheduledNotificationDateTime,
 platformChannelSpecifics);