fix(mobile): prevent Android 12 startup crash from API 33 language calls - #2259
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… classes AppLanguageModule and WidgetLocale are loaded unconditionally on all Android versions, but both referenced android.app.LocaleManager (API 33+) directly in import statements, private method signatures, and member-access expressions. On Android <=12 the class verifier resolves those references during class loading—before any SDK_INT guard can short-circuit—raising NoClassDefFoundError / VerifyError and crashing the app at startup. Fix: move every LocaleManager reference into two isolated @RequiresApi(33) helper objects (AppLanguageApi33, WidgetLocaleApi33). The common classes call the helpers only after a runtime SDK_INT >= TIRAMISU check, so the verifier on older devices never resolves the API 33 class. Refs: CodeWithCJ#2253
…lpers
Review of the first pass found the API 33 isolation was too narrow: it moved
LocaleManager but left the API 33+ Intent.getParcelableExtra(String, Class<T>)
overload directly in the common WidgetLocale object, which is loaded on every
Android version. On Android <=12 the class verifier can resolve that overload
during class loading and raise NoClassDefFoundError / VerifyError before any
SDK_INT guard runs.
Full audit of the modified native path found one additional API 33 call:
- WidgetLocale.kt.tmpl: intent.getParcelableExtra(EXTRA_LOCALE_LIST, LocaleList::class.java)
Fix:
- Move getParcelableExtra(String, Class) into WidgetLocaleApi33.getLocaleListExtra
- Adopt the AndroidX out-of-line pattern on both helpers: @RequiresApi(33) on
the object, @JvmStatic + @DoNotInline on every method that touches an API 33
symbol, so R8/ART cannot inline the body back into the common caller
- Stop crossing the helper boundary with LocaleManager: make the private
localeManager() helper private; public methods return only String?/LocaleList?
(LocaleList is API 24, safe on minSdk 26)
- Split AppLanguageApi33.getEffectiveLanguage into getApplicationLanguageTag
(API 33 only) so the non-API-33 fallback stays in the common module and the
helper never handles a minSdk-safe path
Contract tests now detect the API 33 getParcelableExtra overload specifically
(not the legacy single-arg form, which is API 1) and require @DoNotInline on
every helper method that performs an API 33 call.
Refs: CodeWithCJ#2253
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Included review availability: Your plan provides up to 8 included reviews per hour; 7 remain after this review. 📝 WalkthroughWalkthroughChangesAndroid locale isolation
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: ⚪ Minimal · up to The PR moves Android 13 language API calls behind guarded compatibility helpers, preventing startup crashes on Android 12 and below. With the reported Android 12 confirmation and passing validation and release builds, no actionable merge-blocking risk remains. Sequence Diagram(s)sequenceDiagram
participant AppLanguageModule
participant AppLanguageApi33
participant WidgetLocale
participant WidgetLocaleApi33
participant LocaleManager
AppLanguageModule->>AppLanguageApi33: Request application or platform language
AppLanguageApi33->>LocaleManager: Read or write application locales
LocaleManager-->>AppLanguageApi33: Return locale data
AppLanguageApi33-->>AppLanguageModule: Return language tag
WidgetLocale->>WidgetLocaleApi33: Request guarded locale-list or language access
WidgetLocaleApi33->>LocaleManager: Read system or application locales
LocaleManager-->>WidgetLocaleApi33: Return LocaleList
WidgetLocaleApi33-->>WidgetLocale: Return normalized language
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✅ Passed checks (4 passed)
Full details: Linked Issues checkExplanation The changes address issue [ Full details: Docstring CoverageExplanation Docstring coverage is 27.27% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 11 functions across 4 files. (2 skipped: 2 unsupported.) Full details: Description checkExplanation The description is complete and follows the repository template. It explains the problem and implementation, links the issue, provides test steps, identifies the PR type, completes the applicable mobile checklist item, and documents validation results.
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Inline comments:
In `@SparkyFitnessMobile/__tests__/config/androidApi33Isolation.test.ts`:
- Around line 74-92: Update the AppLanguageModule test’s SDK guard validation to
inspect each enclosing method body independently rather than searching across
the entire source. For every AppLanguageApi33 call site, extract its method body
and assert that the corresponding Build.VERSION.SDK_INT guard appears within
that body before the call, so guards from setApplicationLanguage cannot satisfy
checks for getApplicationLanguage or other methods.
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SparkyFitnessMobile/__tests__/config/androidApi33Isolation.test.tsSparkyFitnessMobile/__tests__/config/widgetResourceContract.test.tsSparkyFitnessMobile/targets/android-language/kotlin/com/sparkyapps/sparkyfitness/language/AppLanguageApi33.ktSparkyFitnessMobile/targets/android-language/kotlin/com/sparkyapps/sparkyfitness/language/AppLanguageModule.ktSparkyFitnessMobile/targets/android-widget/kotlin/com/sparkyapps/sparkyfitness/widget/WidgetLocale.kt.tmplSparkyFitnessMobile/targets/android-widget/kotlin/com/sparkyapps/sparkyfitness/widget/WidgetLocaleApi33.kt.tmpl
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The previous commit accidentally replaced the {{SUPPORTED_LOCALES}} and
{{FALLBACK_LOCALE}} placeholders in AppLanguageModule.kt with hardcoded
"en"/"pl" literals, and removed the dead-code FALLBACK_LOCALE/fallbackTag()
declarations. The placeholders are intentional: withAppLanguage.ts substitutes
them at prebuild time from the central localeRegistry, so the native module
stays in sync when a new locale is shipped. Hardcoding the list would silently
break the next shipped locale.
Restore the placeholders and the dead-code declarations to keep the PR scope
narrow (API 33 isolation only, no unrelated cleanup). Also drop the unused
java.util.Locale import from AppLanguageApi33.kt.
Add a contract test asserting AppLanguageModule.kt keeps the
{{SUPPORTED_LOCALES}}/{{FALLBACK_LOCALE}} placeholders and does not hardcode
an "en","pl" list.
CodeRabbit finding (PR CodeWithCJ#2259): the SDK guard assertions for AppLanguageModule searched the entire source file with indexOf/lastIndexOf, so a guard from setApplicationLanguage could satisfy the assertion for getApplicationLanguage even if the latter lost its own guard. Fix: add a brace-balanced extractFunctionBody helper and scope every guard-vs-helper check to a single method body. Apply the same scoping to the WidgetLocale guard assertions for refreshEffectiveRenderLocaleFromBroadcast, systemPlatformLanguage, and currentPlatformLanguage. Add a mutation-style regression test that removes the guard from getApplicationLanguage in a synthetic copy and proves the per-body extraction detects the missing guard while the helper call remains.
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Inline comments:
In @.github/workflows/build-test-apk.yml:
- Around line 3-10: Restrict the workflow’s GITHUB_TOKEN to read-only repository
contents by adding workflow-level permissions with contents set to read, and
configure actions/checkout@v4 with persist-credentials disabled. Keep the
existing artifact upload behavior unchanged.
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Below comments are directly from calude. I didn't verify them. please use it with caution. |
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The APK foreverimagining tested was built from Either pull Two small ones:
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1. Remove the normalizeLanguagePublic alias: it was internal, not public, and the name was misleading. Make WidgetLocale.normalizeLanguage internal and have WidgetLocaleApi33 call it directly. 2. Replace the hardcoded list of widget Kotlin files in the API 33 isolation contract test with dynamic directory discovery. A new widget .kt.tmpl importing LocaleManager is now caught automatically without needing to update the list. Only the intentional API 33 helper (WidgetLocaleApi33.kt.tmpl) is excluded. Added invariant assertions proving the discovery finds .kt and .kt.tmpl files and excludes the helper.
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Thanks — all three points are valid. I kept the hydration hardening out of this PR to preserve the narrow scope. I addressed the two code/test review items and built a new test APK from the final PR-only HEAD: https://github.com/Dragonk/SparkyFitness/actions/runs/32923967647 Source: This build does not contain the separate hydratePreferences change. I have asked the affected Android 12 user to verify this exact build. Affected-device confirmation pending. |
2 participants
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Note: AI-generated descriptions must be manually edited for conciseness. Do not paste raw AI summaries.
Description
What problem does this PR solve?
Mobile 1.6.3 introduced platform per-app language support that uses Android 13 (API 33) APIs. Several native classes that are loaded on every Android version contained direct references to API 33 symbols (
android.app.LocaleManager, the API 33Intent.getParcelableExtra(String, Class<T>)overload). On Android 12 and below the class verifier can resolve those references during class loading—before anySDK_INTguard can short-circuit—raisingNoClassDefFoundError/VerifyErrorand crashing the app at startup.How did you implement the solution?
Following the standard AndroidX out-of-line compatibility pattern, every API 33+ reference is moved into dedicated
@RequiresApi(33)helper objects (AppLanguageApi33,WidgetLocaleApi33). The common classes (AppLanguageModule,WidgetLocale) call the helpers only after a runtimeBuild.VERSION.SDK_INT >= 33/isNativeAppLanguageSupported()guard, so the class verifier on Android ≤12 never resolves the API 33 symbols. Helper methods that perform API 33 calls are annotated@JvmStatic @DoNotInlineso R8/ART cannot inline them back into the common caller. NoLocaleManagercrosses the helper boundary.Linked Issue: Fixes #2253
Root cause
minSdkis 26 (Android 8.0); the app supports Android <33.AppLanguageModule,WidgetLocale) are loaded unconditionally on all Android versions.android.app.LocaleManagerand called the API 33Intent.getParcelableExtra(String, Class<T>)overload directly in import statements, private method signatures, and member-access expressions.if (Build.VERSION.SDK_INT < 33) returnguard is insufficient: the class verifier resolves API 33 references during class loading, before the guard can run, and raisesNoClassDefFoundError/VerifyErroron Android ≤12.@RequiresApi(33)helper objects with@DoNotInlinemethods. The common layer keeps theSDK_INTguards and delegates to the helpers only on the API 33+ path.The API compatibility defect affected the Android ≤12 code path and has now been confirmed against the reported Android 12 startup crash.
Real-device confirmation
Previous affected-device test (confounded)
An affected user (
foreverimagining) reported:Issue report: #2253 (comment)
After installing a test APK, the same user confirmed:
Confirmation: #2253 (comment)
However, that test APK was built from
fix/android-startup-api-compat(SHAf8dcf272), which also contained a separatehydratePreferences()Zustand hardening change. That file is NOT part of this PR. Therefore the previous test was confounded and cannot isolate which change fixed the Android 12 crash.Clean PR-only validation
A new test APK has been built from the final PR-only HEAD (no hydration fix):
acd572430ed40ba0d49758e6865b8ecbd8ce4f35The affected Android 12 user has been asked to verify this exact build. Once confirmed, this section will be updated to:
AFFECTED ANDROID 12 USER CONFIRMED PR-ONLY BUILD STARTS AND LOGS IN SUCCESSFULLYHow to Test
cd SparkyFitnessMobile && pnpm install && pnpm run validate.npx expo prebuild --clean --platform androidand verify the generated Kotlin inandroid/app/src/main/java/.../language/AppLanguageModule.ktand.../widget/WidgetLocale.ktcontains noLocaleManagerimport or direct API 33 call (only inAppLanguageApi33.kt/WidgetLocaleApi33.kt).pnpm exec jest --watchman=false --runInBand __tests__/config/androidApi33Isolation.test.ts— the contract test enforces the isolation.PR Type
Checklist
All PRs:
New features only:
Frontend changes (
SparkyFitnessFrontend/):pnpm run validateand it passes.en) translation file.Backend changes (
SparkyFitnessServer/):rls_policies.sqlfor any new user-specific tables.UI changes (components, screens, pages):
Mobile changes (
SparkyFitnessMobile/):assembleRelease+bundleRelease) and a test APK build both passed in CI. A clean PR-only test APK has been built and submitted to the affected Android 12 user for confirmation (see Real-device confirmation above).Screenshots
No UI changes.
Validation
Local validation (final branch, latest
upstream/main)API compatibility contract tests
__tests__/config/androidApi33Isolation.test.ts(24 tests) enforces:AppLanguageModulehas no code reference toLocaleManagerWidgetLocalehas no code reference toLocaleManagerWidgetLocaledoes not call the API 33getParcelableExtra(String, Class<T>)overload@RequiresApi@DoNotInlineSDK_INT-guarded__tests__/config/widgetResourceContract.test.ts(37 tests) — updated to verify thegetParcelableExtraoverload lives in the helper, not in the commonWidgetLocaleobject.CI build validation
Full Android Release build —
Build Android APKworkflow:success(1h2m13s)assembleRelease), Release AAB (bundleRelease)Test APK build —
Build Test APKworkflow:successactions/upload-artifact@v4Affected Android 12 user validation
A test APK from the earlier run was installed by an affected user on a Samsung Android 12 device and confirmed to start and log in successfully. However, that build also contained the hydration hardening change, so the result was confounded. A new PR-only build has been submitted for clean confirmation. See the "Real-device confirmation" section above.
Notes
git range-diffconfirms both commits are unchanged after rebase onto the latestmain).hydratePreferences()Zustand hardening fix was intentionally excluded from this PR to keep the scope narrow. It is preserved on the working branchfix/android-startup-api-compatfor a follow-up PR.Summary by CodeRabbit