Timer is not worked in background flutter

Question

This code is not printed, when app go to background in iOS.

Timer.periodic(Duration(seconds: 1), (timer) { print('timer'); }

I need to save state to database and play sound after finishing timer. But timer counter minimum is 1 minute. So it means at minimum after 1 minute timer will be finished. This value will be set by user. During this interval device maybe locked. Even if device is locked, app must save state after finishing timer.

Solution

Running dart code in background is not a trivial task. You can read this: https://docs.flutter.dev/development/packages-and-plugins/background-processes

Or can check this plugin: https://pub.dev/packages/flutter_background_service

Comments

[Shohin]

Thank you a lot yelliver. It is solved with flutter_background_service.

[yelliver]

@Shohin if you feel it useful plz mark it as the accepted answer