Flutter SDK installation

Introduction

Flutter SDK lets you build mobile apps easily. Installing it sets up your computer to create Flutter apps.

When you want to start making your first Flutter app.

When setting up a new computer for Flutter development.

When upgrading to a new version of Flutter SDK.

When preparing your environment to learn mobile app development.

When you want to test Flutter apps on your device or emulator.

Syntax

Flutter

No code for installation, but main steps are:
1. Download Flutter SDK from flutter.dev
2. Extract the zip file
3. Add flutter/bin to your system PATH
4. Run 'flutter doctor' in terminal to check setup

Use the official Flutter website to get the latest SDK version.

Adding Flutter to PATH lets you run Flutter commands anywhere in your terminal.

Examples

This example shows how to install Flutter on Windows step-by-step.

Flutter

On Windows:
- Download flutter_windows_x.x.x-stable.zip
- Extract to C:\src\flutter
- Add C:\src\flutter\bin to PATH environment variable
- Open cmd and run flutter doctor

This example explains Flutter installation on macOS using terminal commands.

Flutter

On macOS:
- Download flutter_macos_x.x.x-stable.zip
- Extract to ~/development/flutter
- Add export PATH="$PATH:~/development/flutter/bin" to your shell profile
- Run flutter doctor in terminal

Sample App

This simple Flutter app shows a message confirming Flutter SDK is installed and working.

Flutter

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

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

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: Scaffold(
        body: Center(
          child: Text('Flutter SDK Installed!'),
        ),
      ),
    );
  }
}

Important Notes

Always run flutter doctor after installation to check for missing dependencies.

Make sure to install Android Studio or Xcode if you want to build apps for Android or iOS.

Restart your terminal or computer after updating PATH to apply changes.

Summary

Flutter SDK installation prepares your computer to build Flutter apps.

Download, extract, add to PATH, and verify with flutter doctor.

Follow platform-specific steps for Windows, macOS, or Linux.