Foreground service example in Flutter

I am new to Flutter. Can anyone post the link or code for "android foreground service example with a notification"? I googled but didn't get any good example of foreground service.

I'm working on a project that includes an SMS package. This App has to be active on the foreground.

Update:

I have created my own implementation of android foreground service for Flutter called android_long_task. check it out it solved my problem. let me know if it solves your problem by raising an issue.I created my own library because the tutorial I mentioned just shows how to create a foreground service in java and that's all and as you have found out by now the other foregorund_service plugins have some problems.

Old answer (didn't help me):

if you're having a problem with this and none of the libraries mentioned in other answers worked for you. you might wanna give this tutorial from RetroPortal Studio a try. it's a total of 26 minutes which teaches you how to write a working foreground service for flutter android