How to create a service in native to call a periodic function in flutter

Question

I'm having trouble trying to create a background service that sends the current location to my backend, I have a service in flutter that sends every 30 seconds : locationPingTimer = new Timer.periodic( Duration(seconds: 30), (Timer t) => { location.getLocation().then((LocationData currentLocation) { var locationString = { "latitude": "${currentLocation.latitude}", "longitude": "${currentLocation.longitude}" }; BackEndService.sendCurrentLocation(locationString); }) });

But when the app goes into the background, it fails to play and not keep sending the location. I'm trying to create a background service using: AndroiAlarmeManager. and Cron. But both fail and are not guaranteed. I tested it with AlarmeManager: it works when I call a print function, but when I call the function that gets the location it just doesn't work.

the workManager only works every 15 minutes and that's not good for my wish. so here's my question: How can I create a service with a timer in native that executes a flutter function every 1 minute using Method channel ?