expo-android-signed

An Expo Config Plugin to persist Android release signing configurations in build.gradle across expo prebuild runs.

Installation

pnpm add @nauzyx-labs/expo-android-signed

Usage

Add the plugin to your app.json or app.config.js:

{
  "expo": {
    "plugins": ["expo-android-signed"]
  }
}

Configuration

The plugin looks for the following environment variables (usually in a .env file in your project root) during the build process:

• RELEASE_STORE_FILE: Name of your keystore file (e.g., my-release-key.keystore). The file should be in your project root.
• RELEASE_KEY_ALIAS: Your key alias.
• RELEASE_STORE_PASSWORD: Your keystore password.
• RELEASE_KEY_PASSWORD: Your key password.

Customizing Options

You can also pass options directly in app.json (though environment variables are recommended for passwords):

"plugins": [
  [
    "expo-android-signed",
    {
      "storeFile": "custom-key.keystore",
      "keyAlias": "custom-alias"
    }
  ]
]

How it works

When you run npx expo prebuild, this plugin automatically patches android/app/build.gradle to:

1. Add a release signing config.
2. Link the release build type to the release signing config.
3. Ensure the debug build type remains on the debug signing config.

License

MIT