page_two.dart

import 'package:flutter/material.dart';
import 'package:flutter_route_obser/main.dart';
class PageTwo extends StatefulWidget {
  @override
  _PageTwoState createState() => _PageTwoState();
}

class _PageTwoState extends State<PageTwo> with  RouteAware {

  @override
  void didChangeDependencies() {
    super.didChangeDependencies();
    routeObserver.subscribe(this, ModalRoute.of(context));
  }

  @override
  void dispose() {
    routeObserver.unsubscribe(this);
    super.dispose();
  }

  @override
  void didPush() {
    print('didPush Page2');
  }

  @override
  void didPopNext() {
    print('didPopNext Page2');
  }


  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(),
      body: Column(
        children: <Widget>[
          Center(
            child: Text("PAGE TWO"),
          ),

       ],
      ),

    );
  }
}