// viewmodels/user_viewmodel.dart import 'package:flutter/material.dart'; import '../models/user.dart'; import '../repositories/user_repository.dart';
you should focus on the core architectural principles and the practical implementation of real-world features covered in the course. Paper Outline 1. Introduction to MVVM in Flutter Definition
class ApiService final String baseUrl = "https://jsonplaceholder.typicode.com"; The Ultimate Hands-On Flutter and MVVM - Build ...
This comprehensive guide represents experience. We won't just talk theory; we will dive deep into a practical, step-by-step implementation of the MVVM architecture using modern Flutter best practices. By the end of this article, you will possess the blueprint to build robust, scalable, and testable applications.
if (success) Navigator.pushReplacementNamed(context, '/home'); else ScaffoldMessenger.of(context).showSnackBar( SnackBar(content: Text(authVM.errorMessage)), ); // viewmodels/user_viewmodel
Future<void> fetchProducts() async dataState = DataState.loading; notifyListeners();
// Getters for the View to listen to bool get isLoading => _isLoading; String get errorMessage => _errorMessage; UserModel? get currentUser => _currentUser; We won't just talk theory; we will dive
class UserScreen extends StatelessWidget @override Widget build(BuildContext context) final viewModel = Provider.of<UserViewModel>(context); return Scaffold( appBar: AppBar(title: Text("MVVM Users")), body: viewModel.isLoading ? Center(child: CircularProgressIndicator()) : ListView.builder( itemCount: viewModel.users.length, itemBuilder: (ctx, i) => ListTile( title: Text(viewModel.users[i].name), ), ), floatingActionButton: FloatingActionButton( onPressed: () => viewModel.fetchUsers(), child: Icon(Icons.refresh), ), );
In viewmodels/auth_viewmodel.dart , we handle the login logic. Notice:
class LoginScreen extends StatelessWidget final TextEditingController emailController = TextEditingController(); final TextEditingController passwordController = TextEditingController();