Navigator.pushAndRemoveUntil

main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        brightness: Brightness.light,
      ),
      home: const PageA(),
    );
  }
}

class PageA extends StatefulWidget {
  const PageA({Key? key}) : super(key: key);

  @override
  State<PageA> createState() => _PageAState();
}

class _PageAState extends State<PageA> {
  @override
  void initState() {
    super.initState();
    print('Init A');
  }

  @override
  void dispose() {
    print('Dispose A');
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Page A'),
      ),
      body: Center(
        child: ElevatedButton(
          onPressed: () {
            Navigator.of(context).push(
              MaterialPageRoute(
                builder: (context) => const PageB(),
              ),
            );
          },
          child: const Text('Push B'),
        ),
      ),
    );
  }
}

class PageB extends StatefulWidget {
  const PageB({Key? key}) : super(key: key);

  @override
  State<PageB> createState() => _PageBState();
}

class _PageBState extends State<PageB> {
  @override
  void initState() {
    super.initState();
    print('Init B');
  }

  @override
  void dispose() {
    print('Dispose B');
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Page B'),
      ),
      body: Center(
        child: ElevatedButton(
          onPressed: () {
            Navigator.of(context).pushAndRemoveUntil(
              MaterialPageRoute(
                builder: (context) => const PageC(),
              ),
              (route) => false,
            );
          },
          child: const Text('Push and Remove until C'),
        ),
      ),
    );
  }
}

class PageC extends StatefulWidget {
  const PageC({Key? key}) : super(key: key);

  @override
  State<PageC> createState() => _PageCState();
}

class _PageCState extends State<PageC> {
  @override
  void initState() {
    super.initState();
    print('Init C');
  }

  @override
  void dispose() {
    print('Dispose C');
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Page C'),
      ),
      body: const SizedBox(),
    );
  }
}