How to refresh a page after back button pressed

Question

I have a "list page". and an add page. User clicks "add page", goes to a new page where they add some entity. Then I pop the Navigator, and user goes back to "list page".

At this point, I want to get notified somehow - callback maybe? override a method, I am not really sure - and re-read the information from database.

Is there a hook like this in Flutter? Or is there another pattern that I should use?

Answer 1

The Navigator.push method returns a future of the generic type of the Route:

Navigator.of(context)   .push(new MaterialPageRoute<String>(...))   .then((String value) {     print(value);   }); 

And inside the new route, when you have the value you need:

Navigator.of(context).pop('String');