app_initializer 1.0.0

A Flutter widget that streamlines app initialization, managing splash screens, async tasks, and error handling

example/lib/main.dart

import 'package:app_initializer/app_initializer.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 AppInitializer(
      splashBuilder: (context) => const SplashScreen(),
      application: const MainApp(),
      initializer: _initializeApp,
      errorBuilder: (context) => const ErrorScreen(),
    );
  }

  Future<void> _initializeApp() async {
    // Simulate app initialization tasks
    await Future.delayed(const Duration(seconds: 5));
    // Uncomment the line below to simulate an initialization error
    // throw Exception('Initialization failed');
  }
}

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

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: Scaffold(
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              CircularProgressIndicator(),
              SizedBox(height: 16),
              Text('Loading...'),
            ],
          ),
        ),
      ),
    );
  }
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'My App',
      theme: ThemeData(primarySwatch: Colors.blue),
      home: const Scaffold(
        body: Center(child: Text('Welcome to My App!')),
      ),
    );
  }
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              const Icon(Icons.error, color: Colors.red, size: 48),
              const SizedBox(height: 16),
              const Text('An error occurred during initialization'),
              const SizedBox(height: 16),
              ElevatedButton(
                onPressed: () {
                  // Add retry logic here
                },
                child: const Text('Retry'),
              ),
            ],
          ),
        ),
      ),
    );
  }
}