Flutter App Release

1. How to Change App Icon

• Add the following in pubspec.yaml:

dev_dependencies:
  flutter_launcher_icons: ^0.13.1

flutter_launcher_icons:
  android: true
  ios: true
  image_path: "lib/assets/icon/round_icon.png"

flutter:
  assets:
    - lib/assets/icon/round_icon.png
        

• Organize your assets folder like this:

my_flutter_project/
├── lib/
│   └── assets/
│       └── icon/
│           └── round_icon.png
├── pubspec.yaml
        

• Run the following commands:

flutter pub get
flutter pub run flutter_launcher_icons
        

2. How to Change App Name

• For Android, modify AndroidManifest.xml:

android/app/src/main/AndroidManifest.xml


        

• For iOS, update Info.plist:

ios/Runner/Info.plist

CFBundleDisplayName
Your New App Name
        

3. How to Change Package Name

• Update the applicationId in build.gradle:

android/app/build.gradle

defaultConfig {
    applicationId "com.yourcompany.app_name"
}
        

• Update the namespace:

android {
    namespace "com.yourcompany.app_name"
}
        

• Use the change_app_package_name package:

dev_dependencies:
  change_app_package_name: ^1.0.0
        

• Run the following commands:

flutter pub get
flutter pub run change_app_package_name:main com.newcompany.app_name
flutter clean
flutter pub get
flutter run
        

4. How to Generate a Release Bundle

• Generate a keystore:

keytool -genkey -v -keystore key.jks -keyalg RSA -keysize 2048 -validity 10000 -alias key
        

• Configure signing in build.gradle:

android {
    signingConfigs {
        release {
            storeFile file("key.jks")
            storePassword "your_password"
            keyAlias "key"
            keyPassword "your_password"
        }
    }
    buildTypes {
        release {
            signingConfig signingConfigs.release
        }
    }
}
        

• Build the release bundle:

flutter build appbundle --release
        

• Locate the file in build/app/outputs/bundle/release/app-release.aab.

5. How to Create a Release APK

• Run the following command:

flutter build apk --release
        

• Locate the APK in build/app/outputs/flutter-apk/app-release.apk.