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refactor: rename dashboards→webviews, unique applicationId per flavor

Each flavor gets applicationIdSuffix = ".<name>" so the Bravia
getApplicationList API returns a distinct URI per webview, enabling
Control4 to launch specific flavors independently.

BREAKING CHANGE: applicationId changed from cz.c3c.webviewkiosk to
cz.c3c.webviewkiosk.<flavor> — uninstall old app before reinstalling.
BuildConfig.DASHBOARD_URL renamed to WEBVIEW_URL.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-06-12 18:22:51 +02:00

2.9 KiB

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android-webview-kiosk

Android TV app: fullscreen WebView kiosk. Multiple APK flavors built from webviews.yaml (repo root) — one APK per entry. Runs on the living-room Sony Bravia KD-65XE9305 (Android 8.0, API 26; Android System WebView updates independently via Play Store — currently v138). Launched remotely through the Bravia REST IP-control API by Control4 (driver lives in a separate project). See README.md for the API sequence.

Lab project — with deviations

This is a lab project (lab skill conventions apply) EXCEPT:

No container image, no helm chart, no /livez//readyz — artifact is an APK.
No nix build: gradle needs network for Maven deps. The flake is a dev shell only. All builds run as nix develop --command gradle ....
Agents cannot run nix/gradle/adb here — ask the user to run commands and report output.

NixOS aapt2 workaround

AGP cannot run the Maven-downloaded aapt2 on NixOS (dynamically linked generic Linux binary). The nix shellHook rewrites the android.aapt2FromMavenOverride line in gradle.properties to point at the SDK's nix-patched aapt2 on every nix develop. The sentinel value __NIX_SHELLHOOK_SETS_THIS__ is what's tracked in git; the shellHook replaces it before any gradle command runs.

Commands (user-run, from repo root)

Tests: nix develop --command gradle --no-daemon :app:testWeatherReleaseUnitTest
All APKs: nix develop --command gradle --no-daemon :app:assembleRelease → app/build/outputs/apk/<flavor>/release/<flavor>-release.apk
Single APK: nix develop --command gradle --no-daemon :app:assembleWeatherRelease
Sideload: adb connect <tv-ip>:5555 && adb install -r <apk> (bump versionCode in app/build.gradle.kts first for upgrades)
Fresh install: adb uninstall cz.c3c.webviewkiosk && adb install <apk>

Key facts

Package/applicationId: cz.c3c.webviewkiosk; repo name keeps the android- prefix, the package can't (hyphens illegal).
Webview URL + label configured in webviews.yaml (repo root). Each entry becomes a product flavor with applicationIdSuffix = ".<name>"; BuildConfig.WEBVIEW_URL is injected at build time. Changing a URL means editing the YAML, rebuilding, resideloading. Intentional: keeps Control4 integration to a single parameterless launch call.
signing/release.keystore is committed on purpose (private repo, LAN-only kiosk) so every build is upgrade-compatible. Don't reuse the key.
minSdk 26 is a hard floor — the TV never gets newer Android.
LEANBACK_LAUNCHER category + android:banner are what make the app visible to the Bravia API's getApplicationList/setActiveApp. Don't remove either.
App URIs (from getApplicationList) are per-flavor, e.g. weather: com.sony.dtv.cz.c3c.webviewkiosk.weather.cz.c3c.webviewkiosk.weather.MainActivity
setActiveApp alone wakes the TV from standby — no separate setPowerStatus call needed. Control4 driver can skip the wake step.