How to call function to update value after poping screen in flutter?

Question

Screen 1: shows list of item with add button. Screen 2: form to add a new item to the list.

Screen 2 >> Screen 1 - While calling navigator.pop() in screen 2, how to call method/setState (to update list) in screen 1? Can anyone help me out?

I don't want to relaunch screen again. I just need to run a method to update my list after popping previous screen?

Answer 1

When you navigate from Screen 1 to Screen 2, you use the push method. The push method returns a Future object. You can use the then method of Future to execute your code after Screen 2 was popped from the navigation stack.

Navigator.of(context)
  .push(MaterialPageRoute(
     builder: (context) => Screen2(),
  ))
  .then((value) {
    // you can do what you need here
    // setState etc.
  });

Answer 2

You can use Provider or BLoc or you can await for the result when you push the page