# Producing an Android Build

Moropo supports running tests on Android using a `.apk` build file.

Please note:

* Play Store Android App Bundles (`.aab`) files are **not supported** - you must upload a `.apk` file
* Your `.apk` should be compatible with [x86\_64](https://developer.android.com/ndk/guides/abis#86-64) architecture

## Which build type should I use?

You can use a Debug or Release build set to use any backend environment.

Many Moropo users configure different test setups for different build types. For example:

* a Debug build using your Dev Environment that runs a regression suite on each pull request for a single device
* a Release build using your Staging Environment that runs a full test suite before each production release across a wide range of devices

## Using Gradle to produce a `.apk`

If you're comfortable with the terminal and have a natively-built Android app, you can use [Gradle](https://gradle.org/) to produce your build file:

To produce a debug build, run `./gradlew assembleDebug` in your terminal.

To produce a release build, run `./gradlew assembleRelease` in your terminal.

The `.apk` will be exported to your configured output directory, typically: `~/build/outputs/apk/`

## Using Android Studio to produce a `.apk`

1. Launch Android Studio
2. Open your project
3. Click on the **Build** menu in the top bar, then select **Build Bundle(s) / APK(s)**, then **Build APK(s)**.\
   ![](https://1849561984-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FNrvYDqka9qiakmPqT4am%2Fuploads%2FCJrVbYN7CBTvCKmEhEck%2Fbuild-apk-android-studio.png?alt=media\&token=98ceffd5-388f-48b7-8cae-50c48a68b779)
4. Wait for your build to complete.
5. Press the **locate** button on the notification (bottom right) to open your file system and access the `.apk`

## \[React Native] Using Expo EAS to produce a `.apk`

If your app is built using React Native, you can use [Expo Application Services](https://expo.dev/eas) to build your app.

Ensure your `eas.config` includes the correct setting:

```json
{
  "build": {
    "myProfile": {
      "android": {
        "buildType": "apk"
      }
    }
  }  
}    
```

*Note: EAS allows a `.apk` to be produced using various config options; read the* [*official docs*](https://docs.expo.dev/build-reference/apk/)*.*

Run EAS via your terminal to trigger the build: 

```
eas build -p android --profile myProfile
```

## Using Flutter to produce a `.apk`

If your app is built using Flutter, you can use the `flutter` command line inside your terminal.

To produce a Debug build, run `flutter build apk --debug`.

To produce a Release build, run `flutter build apk`.

Your `.apk` will appear in the `./build/app/outputs/` folder.