How to use back button function in Flutter?

Question

I want to back programmatically without press back button , ("trigger back button functionality without pressing it ") ?

I don't use stack of navigation , so If trigger this function in the root page the app will crashes because the back button functionality here is to close the app . — Omar Abdelazeem, Aug 29 '21 at 11:15
What kind of navigation are you using then ? Some code would help. — esentis, Aug 29 '21 at 11:16
I think this will help you to figure out [programmatically exit the app](https://stackoverflow.com/a/57534684/4954386) — Zah_ARin, Aug 29 '21 at 11:24

score 1 · Answer 1 · answered Aug 29 '21 at 12:03

I think you can use WillPopScope class for this case

bool shouldPop = true;
@override
Widget build(BuildContext context) {
  return WillPopScope (
    onWillPop: () async {
      return shouldPop;
    },
    child: const Text('WillPopScope sample'),
  );
}

Hope this helps. You can read more in the official documentation https://api.flutter.dev/flutter/widgets/WillPopScope-class.html

How to use back button function in Flutter?

1 Answers1