71 lines
2.2 KiB
Markdown
71 lines
2.2 KiB
Markdown
# Who Need Help for Android
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This module is a native Android WebView shell for the Phoenix application. It
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keeps authentication cookies, LiveView WebSockets, MapLibre, chat, and
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foreground geolocation in the same trusted origin.
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## Verified build configuration
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- Android Gradle Plugin 9.3.0
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- Gradle 9.6.1
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- compileSdk / targetSdk 37
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- Build Tools 37.0.0
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- Java source and bytecode level 17
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- minSdk 24 (project baseline, not an Android SDK requirement)
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The debug origin is not stored in the Dockerfile or Gradle project. Set
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`WNH_DEBUG_BASE_URL` in the repository's ignored `.env` file. The supplied
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local configuration uses loopback together with `adb reverse`; debug builds
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allow cleartext traffic, while the WebView still restricts in-app navigation to
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that one configured origin.
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Release builds do not have a default server. Supply the real HTTPS deployment:
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```sh
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./gradlew :app:assembleRelease \
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-PWNH_BASE_URL=https://help.your-domain.example
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```
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The build rejects a missing, HTTP, credentialed, query-bearing, or
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fragment-bearing release URL.
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## Reproducible Docker build
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From the repository root:
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```sh
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./scripts/android-build.sh
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sha256sum android/dist/who-need-help-debug.apk
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```
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The Docker build runs JVM unit tests, Android lint, and `assembleDebug` before it
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exports the APK and lint report.
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## Emulator verification
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The optional `emulator` target contains the API 37.0 Google APIs x86_64 system
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image. It requires KVM and host networking. Pass the same `.env` value as a
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build argument, then expose the Compose proxy to Android with `adb reverse`:
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```sh
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set -a
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. ./.env
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set +a
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docker build \
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--build-arg "WNH_DEBUG_BASE_URL=$WNH_DEBUG_BASE_URL" \
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--target emulator \
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-t who-need-help-android:emulator \
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android
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docker run --rm --name who-need-help-android-emulator \
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--device /dev/kvm \
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--network host \
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who-need-help-android:emulator
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docker exec who-need-help-android-emulator adb reverse tcp:4010 tcp:4010
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docker exec who-need-help-android-emulator adb install \
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/opt/who-need-help/who-need-help-debug.apk
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```
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The application ID `org.whoneedhelp.mobile` is provisional until the publishing
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identity and store listing are chosen. Changing it after publication creates a
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different Android application.
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