e1bf456743e2f1e51ba530f148a88023e07f0840
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Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 KeelrLeek
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e1bf456743 |
android auto: the car can see the app, and the root it opens is empty
Android Auto reaches a media app through `MediaBrowserService`, so `MediaService` becomes a `MediaLibraryService`, one intent filter carries three actions — media3's `MediaLibraryService` and `MediaSessionService`, plus the legacy `android.media.browse.MediaBrowserService` that Auto actually binds — and `res/xml/automotive_app_desc.xml` with the `com.google.android.gms.car.application` meta-data declares the app to the car. Auto lists SoulStream, opens it, and gets a browsable root. There is nothing under it: `onGetChildren` is left un-overridden so the default answers `ERROR_NOT_SUPPORTED` at once, and round fifty fills the tree. `onGetLibraryRoot` answers out of `Futures.immediateFuture` — no database, no I/O, nothing deferred — because `MediaLibraryServiceLegacyStub.onGetRoot` blocks the binder thread serving the host on that future with NO timeout and runs the callback on the main handler. A root that waits on anything is a head unit that gives up. The round carries a mitigation it cannot be split from. androidx/media #3158 — open since 2026-04-03, confirmed again 2026-09-04, reproduced on media3 1.11.0 — has a host that binds a `MediaLibraryService` with nothing playing drive the service round `onCreate` → `onBind` → `onGetSession` → `onConnect` → `onDestroy` at about thirty cycles a second, deterministically after a force-stop with no existing binding. That is exactly how Auto connects and exactly what the prober does. media3 will not act before an Auto-side fix lands, so the loop cannot be stopped from here; it can only be made to cost nothing. The session, the player, the notification provider, the audio-focus request and the becoming-noisy receiver move into `MediaHub` for the life of the PROCESS and `onCreate` allocates and registers nothing — round forty-eight's version would have built a platform session and a legacy browser stub thirty times a second, registered and unregistered a receiver sixty times a second, and abandoned audio focus thirty times a second while music was playing. Three consequences, each a trap for the next round. `onDestroy` calls `removeSession` and never `release()`: `removeSession` drops the session from that instance's map and clears its listener, which is what stops a destroyed service being called back, while `markReleased()` would latch `released` and leave a process-lifetime player that never updates the card again. The session is built with `MediaLibrarySession.Builder(applicationContext, …)` rather than the `(MediaLibraryService, …)` overload, because `MediaSessionServiceLegacyStub.initialize()` does `attachToBaseContext(sessionImpl.getContext())` — a session built against the Service pins a destroyed Service as the base context of a live `MediaBrowserServiceCompat`. And nothing releases the session any more, so it and its platform `MediaSessionCompat` live until the process dies; the walk's `one-session` check is what keeps that honest. `onCreate` logs `auto service created n=…` and `onDestroy` logs `auto service destroyed`, which are the only way to count the loop on a real phone. And the instrument. `tools/auto-prober/` is a throwaway app that binds the same way Auto does, with Auto's own root hints, walks whatever tree comes back, and logs one JSON object per event under `SoulAutoProbe`. It is framework-only (`android.media.browse.MediaBrowser`, not androidx, not media3) because that is the path Auto itself takes into a media3 app, and a prober built out of the library it is probing would not prove that path works. It lives outside `src-tauri/gen/android/` because `tauri android init` would delete it, and borrows the generated project's Gradle wrapper rather than shipping one, so a run downloads nothing. With SoulStream force-stopped there is no WebView, so no CDP, so `smoke.mjs` is blind to every bit of this — the prober is the only eye the project has on Auto without a head unit. The number it exists for is `root`: milliseconds from `connect()` to `onConnected()` with the process cold. Two corrections to the plan, argued in the files. `adb shell pm dump` is `dumpsys package` and prints NO application meta-data, so the Auto declaration cannot be a hard walk assertion — the two that ARE hard are the intent filters (`auto-browse`, `auto-library`), which catch the `TAURI_ANDROID_PROJECT_PATH` trap completely because the filters and the meta-data live in one library manifest and are lost together; the declaration is read instead by the prober, through `PackageManager.GET_META_DATA` and the app's own `Resources`, and echoed back by the walk as the advisory `auto-desc`. And the prober module compiles at jvmTarget 1.8 like every other module here, not 17 — JDK 17 is what RUNS Gradle. No Rust, no frontend, no cargo. The round was authored where none of it could be compiled and it has now been built and run: the Kotlin compiles, the APK installs, and the prober binds the app cold. `desc` resolves the meta-data to a real `xml/automotive_app_desc`; `filter` shows BOTH the legacy `android.media.browse.MediaBrowserService` and media3's own resolving to `MediaService`; `root` comes back at ~2.2 s with `ss:root` and a session token, of which the callback itself is about nine milliseconds and the rest is the cold process starting; `children` answers `n=-1` with nothing in it, which is the un-overridden default doing its job; and `auto service created n=1 reused=false` — #3158 does not loop here. One fix the first run earned. The prober read the descriptor's `name` out of the android namespace, but Google's `<uses name="media"/>` is a BARE attribute with no namespace, so it came back `[""]` — a real declaration and a dangling resource id reported identically, which is the single thing the event exists to tell apart. It reads the null namespace now and keeps ANDROID_NS as a fallback; the second run says `uses:["media"]`. None of this proves the car screen: the Desktop Head Unit or a real head unit is the only thing that shows what Auto draws, how it groups a tree, or whether a tap plays. This proves the app answers. |
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KeelrLeek
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07dad65ca5 |
android: the keep rules, and the release build that proves them
Every APK this port has produced is `assembleArm64Debug`, and the generated project turns R8 on for `release` and only for `release` — while tauri finds a plugin class by string, files every `@Command` under `commands[method.name]`, and lets Jackson fill every `@InvokeArg` field by field. Minification breaks exactly that, and it breaks it without a word: the app compiles, installs, launches, shows Home, and then a tap on Library folder answers "No command pickFolder found for plugin ..." in logcat and nothing on screen. So each plugin module now carries its own `consumer-rules.pro` naming its own reflected surface — the shape tauri-android and tauri-plugin-dialog already use in this build, and one that travels with the plugin into a regenerated `gen/android`, which a rule written into that gitignored tree would not. What belongs to no single plugin is in `src-tauri/android/proguard-soulstream.pro`, copied into the generated project by the build script because the app's own Gradle file is regenerated: the runtime annotation attributes, a `-dontwarn` pair for the two `java.beans` classes jackson-databind references and Android does not have (R8 turns a missing class into a build error, so without them there may be no APK at all), and a keep for the four `@Command` methods declared on `app.tauri.plugin.Plugin` itself. Tauri's own rule matches classes annotated `@TauriPlugin` and the members they declare; the base class carries no such annotation, so nothing names `registerListener` — which is what the lock-screen card's buttons and the download notice's Cancel and Open ride on. `build.sh` grows `--release`: the release profile, `--features tauri/devtools` so the walk can still attach at all, `assembleArm64Release`, and a zipalign and sign with the same debug key the phone already trusts, so the APK installs over the app rather than forcing an uninstall that would take Kyle's settings with it. With no argument the script is what it has always been, cargo line for cargo line, so deploy.sh and ship.sh keep the path they run every twenty minutes. And it has been built. Not on the phone and not as arm64 — as **x86_64**, on an emulator, because that is what this machine can run — but the flavour is the only difference: the same Gradle, the same R8, the same rules, the same zipalign and apksigner. `minifyX86_64ReleaseWithR8` succeeded and wrote **no** `missing_rules.txt` at all, which is the `-dontwarn` pair doing its job; `lintVitalX86_64Release` passed, so the `-x lintVital` advice is for a failure that has not happened. The signed APK went over the debug app with `adb install -r` and left its data alone, exactly as the same-key argument above says it must. Then the minified app was walked: Home, the record, playback, the queue, the sheets, the lyrics, the drags, the export — **131 of 131, no exceptions, no console errors, every step as expected**, and nothing in logcat about a missing command or class. That is the failure this round exists to prevent, looked for and not found. What it does not cover is the hands-only list in ANDROID.md — the pickers, the notification buttons, the share sheet — which no walk reaches, and the four `@Command` methods on `Plugin` itself remain a precaution rather than a diagnosed bug. The document says so, command by command. |
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KeelrLeek
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9f0601027c |
android: the handoff — the pending rounds, the pipeline, and what is unverified
Everything written this session that has not been through the device: rounds 43 to 48 (each patch adversarially verified, 43's transient-notice expectation fixed), a partial round 49, the pipeline scripts, the Android Auto design and the icon comparison mock. Also the two harness changes that were never A/B'd — adaptive waits, which may only shorten a declared wait and never lengthen it, and a ship that runs the mock walk and the deploy at the same time. The A/B and its 255-step baseline are in handoff/tools; main stays at what the phone has actually walked. |