custom_route_transition_drun 0.0.3

Es un paquete que te ayudara a programar mas rapido, centrandote en la logica de tu aplicacion y los detalles de ver bien tu aplicacion aca estaran

example/main.dart

import 'package:flutter/material.dart';
import 'package:custom_route_transition_drun/custom_route_transition_drun.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Material App',
      initialRoute: 'page1',
      routes: {
        'page1': (_) => const Page1(),
        'page2': (_) => const Page2(),
      },
    );
  }
}

class Page1 extends StatelessWidget {
  const Page1({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text(
          'Page 1',
        ),
        backgroundColor: Colors.transparent,
      ),
      backgroundColor: Colors.blue.shade100,
      body: Center(
        child: MaterialButton(
          child: const Text(
            'Go to page 2',
            style: TextStyle(color: Colors.white),
          ),
          shape: const StadiumBorder(),
          color: Colors.blue,
          onPressed: () {
            RouteTransitions(
              context: context,
              child: const Page2(),
              animation: AnimationType.fadeIn,
              replacement: false,
            );
          },
        ),
      ),
    );
  }
}

class Page2 extends StatelessWidget {
  const Page2({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text(
          'Page 2',
        ),
        backgroundColor: Colors.transparent,
      ),
      backgroundColor: Colors.blueGrey,
      body: const Center(
        child: Text('Page2'),
      ),
    );
  }
}