Root cause found, and it is not the stale build cache I claimed earlier.
flutter clean was good hygiene and changed nothing here, because nothing
was cached: the resources were being deliberately removed.
Flutter's own Gradle plugin enables shrinking on every release build --
FlutterPlugin.kt, `releaseBuildType.isMinifyEnabled = true` and
`isShrinkResources = true` -- no matter what app/build.gradle.kts says. The
shrinker keeps what it can see referenced, and it cannot see
`MediaControl.custom(androidIcon: 'drawable/ic_auto_eq_on')`: that is a
string inside Dart, resolved at runtime through getIdentifier. So both
equalizer icons were stripped from every release APK ever built.
The evidence that pins it, from the APK pulled off the device:
ic_stat_pluriwave present <- referenced as R.drawable from Kotlin,
4 call sites in the alarm notifications
ic_auto_eq_on absent <- named only in a Dart string
ic_auto_eq_off absent <- named only in a Dart string
Same folder, same file shape, same commit range. The only difference is
whether a real R.drawable reference exists, which is exactly what the
shrinker looks for.
The consequence was never a blank button. getResourceId returns 0 for an
unresolvable name, PlaybackStateCompat.CustomAction.Builder throws on a 0
icon, and that throw aborts AudioService.setState before the media session
is activated -- so Android Auto held a frozen, inactive session. Dead
playback screen, play that never became pause, the app losing its pane to
any app with a live session, audio playing "as if it were not the app".
One shrunk file, four symptoms, since 31 July (2540556).
Two protections, because they fail differently:
- res/raw/keep.xml with tools:keep is the official mechanism for
dynamically resolved resources and is what actually binds the shrinker;
- RecursosResueltosPorNombre.kt gives them genuine R.drawable references,
the same thing that kept ic_stat_pluriwave alive all along.
station_art_* are kept too. They are reached the same way, through
android.resource:// URIs built in Dart, and survived only by luck.
Tests: 1165, unchanged -- this is a build-configuration fix, and no Dart
test can see it. The CI resource guard is what verifies it now.
The equalizer's preset-cycling custom action (eq_preset_siguiente) and
its ic_auto_eq_preset drawable are no longer needed now that the
"Ecualizador" folder lists all six presets directly: the folder replaces
what the cycle action did, and this frees a scarce Android Auto custom
action slot.
The on/off toggle is now the equalizer's only custom action.
On a car head unit the custom actions render icon-first, so two actions
sharing ic_stat_pluriwave were indistinguishable and the toggle gave no
sign of whether the equalizer was on.
Each action now has its own drawable, and the toggle swaps between
ic_auto_eq_on and ic_auto_eq_off so its state is legible at a glance.
The recordings live in app-private storage (<data>/app_flutter/grabaciones),
which the Android sandbox forbids any other app from reading, so no
ACTION_VIEW on a file:// or FileProvider URI could ever open it. On top of
that, viewDirectory built an EMPTY candidate list for that path:
directoryDocumentUri returned null (path outside external storage) and
FileProvider.getUriForFile threw because pluriwave_file_paths.xml never
covered app_flutter. The loop never ran, so both entry points -- the radio
recorder and Settings -- always showed "could not open the folder".
Publish the folder as a browsable storage root via
RecordingsDocumentsProvider instead. The files never leave private storage;
the document framework asks us for them one document at a time, and the user
can browse, copy out, rename and delete straight from the file manager. The
root follows a user-configured path and falls back to the default recordings
directory. Its title reuses the already-translated recordingsFolderTitle, so
no new literal is introduced in any of the 13 locales.
Also fixes "open last recording", broken by the same missing FileProvider
root, and replaces Intent.createChooser with a bare startActivity in the
candidate loop: a chooser never throws when nothing can handle the intent, so
the first candidate always "succeeded" and the fallback chain never ran.
Device QA pending -- the provider is driven entirely by the platform's
document framework, so no unit test covers it. Each candidate logs its own
name under file_actions.viewDirectory for logcat triage.
Android Auto no longer copies the launcher icon as placeholder art; it
rotates through the same 4 on-brand station_art assets the phone UI
already uses, keyed by the same per-station hash for visual parity.
Malformed or unusable favicon URLs (including a Dart Uri quirk where
'http://' reports hasAuthority=true with an empty host) now fail the
validity gate instead of being handed to the OS media browser as-is.
Browsable items also show codec/bitrate as a subtitle when known.
Expose PluriWave to Android Auto (projected) as a media app:
- Declare car media support (automotive_app_desc.xml + manifest meta-data)
so Android Auto discovers the existing MediaBrowserService.
- New navegacion_auto.dart: ConstructorArbolAuto builds the browse tree
(Favoritos / Todas las emisoras / Mis emisoras, 50-item cap, stable
emisora:<id> media ids), reproducirPorMediaId routes a car tap to the
existing playMediaItem pipeline, FuenteEmisorasAutoLocal serves the tree
cold-start-safe (local favorites/custom stations before Flutter UI runs).
- PluriWaveAudioHandler overrides getChildren/getMediaItem/playFromMediaId
as thin delegations; playback pipeline untouched.
- EstadoRadio pushes live station snapshots to the browse source and
reconciles the selected station when playback starts from the car.
- Every playable item ships title + artUri; stations without logo fall
back to a bundled default art (android.resource://).
Tests: 52/52 green (10 new navegacion_auto, 2 new estado_radio, plus
audio safety-net suites). Handler overrides and native XML are
static-review-only (no Android build env). Size exception approved for a
single reviewable commit.
Replace generic system icons (info bubble, stock alarm clock) with a
custom equalizer-bars vector drawable across all 4 notification
builders: pre-notice, snooze countdown, ringing alarm, and the audio
player. Apply the app's cyan brand color to the 3 alarm notifications
that previously had none. Audio notification now explicitly declares
its icon instead of falling back to the full-color launcher icon,
which Android was auto-silhouetting into an illegible status-bar
blob.
**Fix 1 — HTTP cleartext (streams sin HTTPS):**
- Añadir android/app/src/main/res/xml/network_security_config.xml con
cleartextTrafficPermitted=true para permitir streams de radio HTTP
- Referenciar en AndroidManifest.xml con android:networkSecurityConfig
- Resuelve: 'Cleartext HTTP traffic to [host] not permitted' en ExoPlayer
- Radio Paradise (Dance Wave, HTTP) y otras radios HTTP funcionan ahora
**Fix 2 — Gestión de error TYPE_SOURCE y todos los PlaybackException:**
- Añadir listener en playbackEventStream.onError en PluriWaveAudioHandler
- _gestionarErrorReproduccion() emite AudioProcessingState.error al UI,
loggea el error y resetea el player a estado idle limpio
- _mensajeAmigable() traduce códigos ERROR_CODE_IO_*, ERROR_CODE_PARSING_*,
ERROR_CODE_DECODING_* y mensajes de Cleartext/HandshakeException a texto legible
- EstadoRadio.reproducir() captura la excepción y cancela el timer si estaba activo
- EstadoRadio escucha el estadoStream y cancela timer ante cualquier error
**Fix 3 — Artwork con certificado autofirmado:**
- errorWidget en CachedNetworkImage captura HandshakeException silenciosamente
- Muestra _iconoFallback (icono de radio) en lugar de imagen rota
- El error de artwork no se propaga ni interrumpe la reproducción
**Fix 4 — UI consistente en estado de error:**
- PantallaReproductor._Controles muestra mensaje + botón Reintentar en error
- PantallaReproductor._Artwork muestra overlay wifi_off en estado de error
- MiniReproductor muestra botón refresh (reintentar) en estado de error
- EstadoReproduccion.error ya estaba definido; ahora el estadoStream lo emite
- Timer cancelado automáticamente cuando la reproducción falla
- Test de smoke corregido (boilerplate MyApp → placeholder válido)
Fixes: cleartext HTTP, cert autofirmado, ExoPlayer TYPE_SOURCE, UI inconsistente
- ServicioAudio: delega a PluriWaveAudioHandler (audio_service) para
mantener audio vivo en background. AudioService.init() en main.dart.
onTaskRemoved() libera player. mediaItem con nombre/artista/artwork.
- ServicioRadio: lastcheckok=1 en todas las peticiones — solo emisoras
verificadas como funcionales por Radio Browser API.
- EstadoRadio: errorStream (broadcast) para errores de reproducción y
búsqueda. App.dart suscribe y muestra SnackBar flotante 3s.
Los errores de carga de lista siguen como banner inline.
- Icono: generado con SDXL (morado, ondas radio blancas, Material You).
5 densidades Android (48-192px), ic_launcher_round añadido.
- Flutter create con org es.freetimelab
- pubspec.yaml con dependencias core (just_audio, audio_service, provider, sqflite)
- README con features y stack
- Assets preparados
FreeTLab
Javier Bautista Fernández