How to wake up an app at a specific time in IOS

Question

. 。 Answers to this question are eligible for a +50 reputation bounty. Sajjad wants to to this question. 这个问题。

I need to run a task at a specific time (for example 2 hours later) in Flutter, something like an alarm, I have searched in flutter and I know that this is not possible easily.

I have tested work manager and it didn't work properly. I have done the Android Part of the project with Platform_channel and Android Alarm Manager .

I was wondering If you know any other ways in IOS (or Flutter if possible).

---

• some similar questions were asked before but they are too old ( this page and this page ) and haven't had any new solution or update since 2014.
• I need to run some code so as far as I know local notification its not the Answer.

---

EDIT :

My App needs to play a sound (1~3 minutes length) at specific time something like an alarm.

Answer 1

One option for scheduling a task to run at a specific time in Flutter on iOS is to use the AlarmManager class from the flutter_local_notifications plugin.

Here is an example of how to schedule a task to run 2 hours later:

import 'package:flutter_local_notifications/flutter_local_notifications.dart';

final alarmManager = AlarmManager();

// Do it like this
final scheduledTime = DateTime.now().add(Duration(hours: 2));
alarmManager.scheduleAlarm(
    scheduledTime,
    AlarmNotification(
        title: 'Task',
        body: 'Task that you scheduled to run 2 hours later',
    ),
);

Answer 2

I would check out this question and answer Local notification sound not playing while app in background - Swift . It's not exactly the same as your question but I think you could use the same technique with a little creativity.