How to refresh a page other than the current one in flutter - flutter

Question

I would like to update a page other than the one in which the user presses the button, I know that to update the page itself just use the
setState (() {})
but what I want to do is update the HomePage when the user presses a button that is on the main.dart page. How can I solve?
What I thought and that it works but badly is to use the
Navigator.push (context, MaterialPageRoute (builder: (context) => const MyApp ()));
when the user presses the button, and doing so it works because it updates my MyApp (main.dart), the problem is that when they press the button in this way you see the same animation as when you open the app and it is very ugly.

Answer 1

you can pass a function with setState in it to the other page and run the function after click the buttton
something like this:
class Startpage extends StatefulWidget {
const Startpage({super.key});
#override
State<Startpage> createState() => StartpageState();
}
class StartpageState extends State<Startpage> {
#override
Widget build(BuildContext context) {
return TextButton(
onPressed: () => Navigator.push(
context,
MaterialPageRoute(
builder: (context) => SecondPage(updateStartPage: () {
setState(() {
//add your logic
});
})),
),
child: const Text("navigate to second page"));
}
}
class SecondPage extends StatelessWidget {
final Function updateStartPage;
const SecondPage({super.key, required this.updateStartPage});
#override
Widget build(BuildContext context) {
return GestureDetector(
onTap: () => updateStartPage(),
child: const Text("update parent"),
);
}
}