Pass data to the previous screen

Question

I'm building an app which requires data from a page to the previous page. I'm using Navigator.pop(context); to exit from the current page at the same time refreshing the previous page with a function. I need to pass an ID to the previous page for an API calling. How can I pass a data by Navigagtor.pop(context).

Answer 1

Try below code: Navigator.pop(context, 'Back!');

ElevatedButton(
  onPressed: () {
     Navigator.pop(context, 'You are old screen!');
  },
  child: const Text('Back Screen!'),
),

Refer Return data from a screen

Answer 2

From the First Page you can navigate to Second one. The "Navigator.push" returns a Future. Use "then" to get the value returned from Second page.

Navigator.push(context, MaterialPageRoute(builder: (context) => SecondPage())).then((value) {

  // Handle 'value' here.
  // 'value' is returned by second page through Navigator.pop(context, 'some relevante value or object');

});