# android-webview-kiosk

Fullscreen WebView kiosk for Android TV. Shows the house Grafana dashboard:
<https://grafana.c3c.cz/public-dashboards/381fe3e71e164eb99dd0b10e246a36e2>

Target device: Sony Bravia KD-65XE9305 (Android 8.0). Built for remote
launch via the Bravia REST IP-control API, driven by Control4.

## Build

    nix develop --command gradle --no-daemon :app:assembleRelease

APK: `app/build/outputs/apk/release/app-release.apk`

## Sideload

1. TV one-time: Settings → About → press *Build* 7× → Developer options →
   enable ADB debugging.
2. `adb connect <tv-ip>:5555`
3. `adb install -r app/build/outputs/apk/release/app-release.apk`

Upgrades: bump `versionCode` in `app/build.gradle.kts`, rebuild, reinstall
with `-r`. Same committed keystore = no uninstall needed.

## Remote launch (Sony Bravia IP control)

TV prerequisite: IP control auth = "Normal and Pre-Shared Key", Remote
start enabled (wake from deep standby).

App URI (from `getApplicationList`):
`com.sony.dtv.cz.c3c.webviewkiosk.cz.c3c.webviewkiosk.MainActivity`

**`setActiveApp` alone wakes the TV from standby** — no separate
`setPowerStatus` call is needed. The Control4 driver can use a single call:

    curl -s -X POST http://$TV_IP/sony/appControl \
      -H "X-Auth-PSK: $PSK" -H 'Content-Type: application/json' \
      -d '{"method":"setActiveApp","id":601,"version":"1.0","params":[{"uri":"com.sony.dtv.cz.c3c.webviewkiosk.cz.c3c.webviewkiosk.MainActivity"}]}'

If the TV is already on, `setActiveApp` brings the kiosk to the foreground.
If in standby, it wakes and launches directly.

For reference, the two-step sequence (if needed for other integrations):

    # 1. wake (optional — setActiveApp does this implicitly)
    curl -s -X POST http://$TV_IP/sony/system \
      -H "X-Auth-PSK: $PSK" -H 'Content-Type: application/json' \
      -d '{"method":"setPowerStatus","id":55,"version":"1.0","params":[{"status":true}]}'

    # 2. launch (~6 s from quick standby, up to ~30 s from deep eco standby)
    curl -s -X POST http://$TV_IP/sony/appControl \
      -H "X-Auth-PSK: $PSK" -H 'Content-Type: application/json' \
      -d '{"method":"setActiveApp","id":601,"version":"1.0","params":[{"uri":"com.sony.dtv.cz.c3c.webviewkiosk.cz.c3c.webviewkiosk.MainActivity"}]}'

Control4: a DriverWorks driver issuing `setActiveApp` is a separate project.