I want to receive an alarm that sounds when certain conditions are met during reception with the api even if the app is completely terminated using flutter_local_notification and workmanager in flutter .but, the trigger does not occur when the api receive is long in workmanager.

void callbackDispatcher() {
  Workmanager().executeTask((task, inputData) async {
       while(conditions are not satisfied)
        {
        receiving api~~~~~~~
        }
        NotificationService().showNotification(some parameter);
    return Future.value(true);
  });
}

CodePudding user response：

Yes, it is possible to trigger an audible alarm when certain conditions are met even after an app has closed. There are several ways this can be done:

One way is to use push notifications, which allow you to send a message to a user's device, even if your app is not currently running. When the user taps the notification, your app can be launched and can trigger an audible alarm.

Another way is to use a background service, which is a component of an app that can run in the background (i.e., when the app is not actively in use). A background service can be configured to run at specific intervals or to trigger an action when certain conditions are met, such as a change in device location or the receipt of a new data from a server.

Finally, you could use a combination of push notifications and background services to trigger an audible alarm when certain conditions are met.

It's worth noting that the specific implementation will depend on the platform you are using (e.g., Android, iOS) and the programming language you are using to build your app.