Flutter : How to update widget state from background / service?

Question

I'm new in flutter.

I created an service with the android alarm manager plugin to get data from json Api every x minutes. That's ok.

I use a stateful widget with streambuilder + futurebuilder to fetch my json data. At the first load, data are displayed, but when i put new data in the stream (sink.add) from the background / service, the widget is never reloaded.

Please How can reload a widget from the background / service ?

I read more & more tuto and i don't find the anwser.

Many thanks

Answer 1

等待大神答复