fade_indexed_stack 0.2.2

An IndexedStack with FadeTransition and lazy loading.

example/lib/main.dart

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

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'FadeIndexedStack example',
      theme: ThemeData(
        colorSchemeSeed: Colors.blue,
        useMaterial3: true,
      ),
      darkTheme: ThemeData(
        colorSchemeSeed: Colors.blue,
        useMaterial3: true,
        brightness: Brightness.dark,
      ),
      themeMode: ThemeMode.system,
      home: const NavigationView(),
    );
  }
}

class NavigationView extends StatefulWidget {
  const NavigationView({super.key});

  @override
  State<NavigationView> createState() => _NavigationViewState();
}

class _NavigationViewState extends State<NavigationView> {
  int _currentIndex = 0;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: FadeIndexedStack(
        index: _currentIndex,
        lazy: true,
        duration: const Duration(milliseconds: 300),
        children: const [
          HomePage(),
          ProfilePage(),
          SettingsPage(),
        ],
      ),
      bottomNavigationBar: NavigationBar(
        destinations: const [
          NavigationDestination(
            icon: Icon(Icons.home),
            label: "Home",
          ),
          NavigationDestination(
            icon: Icon(Icons.person),
            label: "Profile",
          ),
          NavigationDestination(
            icon: Icon(Icons.settings),
            selectedIcon: Icon(Icons.settings),
            label: "Settings",
          ),
        ],
        selectedIndex: _currentIndex,
        onDestinationSelected: (index) {
          setState(() {
            _currentIndex = index;
          });
        },
      ),
    );
  }
}

class HomePage extends StatelessWidget {
  const HomePage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text("Home")),
      body: const Center(child: Text("Home Page")),
    );
  }
}

class ProfilePage extends StatelessWidget {
  const ProfilePage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text("Profile")),
      body: const Center(child: Text("Profile Page")),
    );
  }
}

class SettingsPage extends StatelessWidget {
  const SettingsPage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text("Settings")),
      body: const Center(child: Text("Settings Page")),
    );
  }
}