Why deployment reaches users in Flutter

Introduction

Deployment is how your app gets from your computer to the phones of real people. Without deployment, users cannot use your app.

When you finish building your app and want friends to try it on their phones.

When you want to share your app with the public through app stores like Google Play or Apple App Store.

When you fix bugs or add new features and want users to get the updated app.

When you want to test your app on a real device instead of just on your computer.

Syntax

Flutter

flutter build apk
flutter install

# or for iOS:
flutter build ios
flutter run

flutter build apk creates the app file for Android devices.

flutter install puts the app on a connected device.

Examples

This command builds the Android app file (APK) that can be installed on phones.

Flutter

flutter build apk

This command installs the built app on a connected Android device for testing.

Flutter

flutter install

This builds the app for iPhones and iPads. You need a Mac to do this.

Flutter

flutter build ios

This runs the app on a connected device or emulator directly from your computer.

Flutter

flutter run

Sample App

This simple Flutter app shows a message to users after deployment. When you build and deploy this app, users will see the text "Hello, users! Your app is deployed." on their screen.

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 MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Deployment Example')),
        body: const Center(child: Text('Hello, users! Your app is deployed.')),
      ),
    );
  }
}

Important Notes

Deployment makes your app available outside your computer.

For Android, you create an APK file; for iOS, you create an app bundle.

Users get your app by downloading it from app stores or installing directly.

Summary

Deployment moves your app from your computer to users' devices.

You use commands like flutter build and flutter install to deploy.

Without deployment, users cannot open or use your app.