What is Full Stack Java Development?
📱 What is Flutter? — An Introduction for Beginners
Flutter is a free, open-source UI toolkit developed by Google that allows developers to build natively compiled applications for:
Mobile (Android & iOS)
Web
Desktop (Windows, macOS, Linux)
—all from a single codebase using the Dart programming language.
🧩 Why Flutter?
Flutter’s main goal is to help developers create beautiful, fast, and cross-platform apps efficiently.
Benefit Explanation
🔁 Single Codebase Write once, deploy on multiple platforms
⚡ High Performance Compiles to native ARM code, uses GPU rendering
🖌️ Customizable UI Rich set of widgets that look great and are highly customizable
🔄 Hot Reload See code changes instantly without restarting the app
🛠️ Strong Developer Tools Integrates with IDEs like VS Code and Android Studio
🖥️ What is Dart?
Dart is the programming language used to write Flutter apps.
It’s object-oriented, fast, and optimized for UI.
Developed by Google specifically for front-end development.
🧱 Basic Flutter Architecture
Layer Description
Widgets Building blocks of the UI (buttons, text, layouts)
Rendering Engine Renders widgets on the screen
Platform Channels Allows Flutter to communicate with native platform features
Dart Framework Core libraries and APIs
🛠️ What Can You Build with Flutter?
Social media apps (e.g., a Twitter clone)
E-commerce platforms
Business or productivity tools
Games (2D mobile games)
Web dashboards or progressive web apps (PWAs)
✅ Getting Started with Flutter
Install Flutter SDK: flutter.dev
Install Dart SDK (if not bundled)
Use an IDE: VS Code or Android Studio
Create a Project:
bash
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flutter create my_app
Run Your App:
bash
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cd my_app
flutter run
📦 Example: A Simple “Hello World” App in Flutter
dart
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import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(title: Text('Hello Flutter')),
body: Center(child: Text('Welcome to Flutter!')),
),
);
}
}
🔍 Summary
Topic Summary
What is it? A cross-platform UI toolkit by Google
Language Dart
Platforms Mobile, Web, Desktop
Key Features Hot reload, high performance, customizable UI
Ideal For Beginners and pros building apps fast on multiple platforms
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