Creating Flutter Projects

flutter create my_flutter_app

flutter_project/
├── lib/
│   └── main.dart
├── test/
├── pubspec.yaml
├── README.md
└── android/
    └── app/
        └── src/
            └── main/
                └── java/
                    └── com/example/myapp/
                        └── MainActivity.java

flutter create --platforms web my_web_app
cd my_web_app
flutter run -d chrome

name: my_flutter_app
description: A new Flutter project
version: 1.0.0

environment:
  sdk: "^3.3.0"

dependencies:
  flutter:
    sdk: flutter

dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:
  uses-material-design: true

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.my_flutter_app">
    <application
        android:name="${applicationName}"
        android:label="my_flutter_app">
        <activity
            android:name=".MainActivity"
            android:exported="true"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
    </application>
</manifest>

PRODUCT_BUNDLE_IDENTIFIER = com.example.my_flutter_app

<manifest xmlns:android="http://schemas.android.com/apk/res/android">
    <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="33" />
</manifest>

<key>LSMinimumSystemVersion</key>
<string>12.0</string>

name: my_flutter_app
description: A new Flutter project.

publish_to: 'none'

version: 1.0.0+1

environment:
  sdk: ">=3.0.0 <4.0.0"

flutter:
  uses-material-design: true
  minSdkVersion: 16
  targetSdkVersion: 33
  minIOSVersion: 12.0
  minMacOSVersion: 10.15

flutter:
  uses-material-design: true

  # Flavor-specific configurations
  assets:
    - assets/config/
    - assets/images/

  # Define flavors
  flavor:
    dev:
      name: "Dev"
      package-name: "com.example.dev"
      version: "1.0.0-dev"
    staging:
      name: "Staging"
      package-name: "com.example.staging"
      version: "1.0.0-staging"
    prod:
      name: "Production"
      package-name: "com.example.prod"
      version: "1.0.0"

import 'package:flutter/material.dart';

void main() {
  // Determine the current flavor
  String? flavor = const String.fromEnvironment('FLAVOR', defaultValue: 'dev');

  runApp(MyApp(flavor: flavor));
}

class MyApp extends StatelessWidget {
  final String flavor;

  MyApp({required this.flavor});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flavor App',
      home: Scaffold(
        appBar: AppBar(
          title: Text('Flavor: $flavor'),
        ),
        body: Center(
          child: Text('Running in $flavor mode'),
        ),
      ),
    );
  }
}

flutter_project/
├── lib/
│   ├── main.dart
│   └── screens/
│       └── home_screen.dart
├── test/
│   └── widget_test.dart
├── pubspec.yaml
└── README.md

flutter create my_flutter_app

flutter build ios --release
flutter build android --release

flutter:
  build:
    release:
      target: ios
      mode: release
      signing:
        key: "path/to/key.p12"
        cert: "path/to/cert.pem"