# Android Build

Build the APK with:

```sh
make apk
```

Environment:

- `ANDROID_SDK_ROOT` defaults to `/opt/android-sdk`.
- `ANDROID_NDK_ROOT` defaults to `/opt/android-ndk`.
- `JAVA_HOME` defaults to `/usr/lib/jvm/java-25-openjdk`.
- `APP_ID` overrides the Android application id.
- `APK_OUT` overrides the output path.
- `APK_VERSION` overrides the packaged app version.
- `ANDROID_MIN_SDK` overrides the minimum supported Android SDK.
- `ANDROID_TARGET_SDK` overrides the target Android SDK.

Installed machine prerequisites expected by this repo:

- `android-sdk-cmdline-tools-latest`
- `android-sdk-build-tools`
- `android-platform-35`
- `android-sdk-platform-tools`
- JDK 17 or newer

The repo tracks `gogio` as a Go tool, so the build runs through:

```sh
go tool gogio -target android ...
```