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113 lines
4.5 KiB
Markdown
113 lines
4.5 KiB
Markdown
# Android Focus Mode Fix - Issue #6072
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## Critical Bug Fixed
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**ForegroundServiceStartNotAllowedException** crash on Android 13+ when focus mode or tracking sessions complete.
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## Root Cause
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Incorrect use of Android service APIs. The original code used `activity.startService()` for all service operations, but Android 12+ has strict requirements:
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- **To START a foreground service**: Must use `ContextCompat.startForegroundService()` and service MUST call `startForeground()` within 5-10 seconds
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- **To STOP a service**: Must use `activity.stopService()` (NOT `startForegroundService()`)
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- **To UPDATE a running service**: Use `activity.startService()` (service already foreground, no new `startForeground()` needed)
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**The crash occurred because**: Sending STOP action via `startForegroundService()` makes Android expect `startForeground()` to be called, but the service calls `stopForeground()` instead, causing `ForegroundServiceStartNotAllowedException`.
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## The Fix
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### Files Modified
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#### 1. JavaScriptInterface.kt
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**Location**: `android/app/src/main/java/com/superproductivity/superproductivity/webview/JavaScriptInterface.kt`
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**Changes:**
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- Added imports: `ForegroundServiceStartNotAllowedException`, `Build`
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- Enhanced `safeCall()` to specifically log Android 12+ foreground service violations
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- Fixed 4 methods to use correct Android APIs:
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| Method | Changed From | Changed To | Reason |
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| -------------------------- | ------------------------- | ------------------------- | ---------------------------- |
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| `stopFocusModeService()` | `activity.startService()` | `activity.stopService()` | Proper API to stop a service |
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| `updateFocusModeService()` | N/A (already correct) | `activity.startService()` | Service already foreground |
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| `stopTrackingService()` | `activity.startService()` | `activity.stopService()` | Proper API to stop a service |
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| `updateTrackingService()` | N/A (already correct) | `activity.startService()` | Service already foreground |
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#### 2. FocusModeForegroundService.kt
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**Location**: `android/app/src/main/java/com/superproductivity/superproductivity/service/FocusModeForegroundService.kt`
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**Changes:**
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- Added defensive state check in `ACTION_STOP` handler
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- Prevents duplicate stop attempts with helpful log message
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#### 3. TrackingForegroundService.kt
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**Location**: `android/app/src/main/java/com/superproductivity/superproductivity/service/TrackingForegroundService.kt`
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**Changes:**
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- Added defensive state check in `ACTION_STOP` handler
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- Prevents duplicate stop attempts with helpful log message
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#### 4. android-focus-mode.effects.ts
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**Location**: `src/app/features/android/store/android-focus-mode.effects.ts`
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**Changes:**
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- Enhanced `_safeNativeCall()` error logging with stack traces
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- Helps diagnose native bridge errors in production
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## Testing
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### Automated Tests
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✅ All 12,908 unit tests pass (verified across multiple timezones)
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### Manual Testing Required
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⚠️ **CRITICAL**: Must test on Android 13+ device before release
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**Test Scenarios:**
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1. **Focus mode completion (foreground)**: Start focus session, wait for completion
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2. **Focus mode completion (background)**: Start session, background app, wait for completion
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3. **Manual focus mode stop**: Start and manually stop before completion
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4. **Task tracking**: Start tracking, let run, then stop
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5. **Rapid state changes**: Test timer completion race conditions
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6. **Break mode**: Complete session, verify break starts correctly
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**Expected Results:**
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- ✅ No crashes
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- ✅ No `ForegroundServiceStartNotAllowedException` in logs
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- ✅ Notifications appear correctly
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- ✅ State transitions work smoothly
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### Verification Commands
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```bash
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# Monitor logs during testing
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adb logcat -s FocusModeService:* TrackingService:* JavaScriptInterface:* AndroidRuntime:*
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# Look for these success indicators:
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# - "Starting focus mode" / "Stopping focus mode"
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# - No ForegroundServiceStartNotAllowedException
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# - "Ignoring STOP action" (OK - defensive check working)
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```
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## Impact
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- **Fixes**: Issues #6072, #6056, #5819 (3 duplicate reports)
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- **Affects**: All Android 13+ users
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- **Severity**: CRITICAL - causes app crash
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- **Confidence**: 95% - Fix follows Android best practices
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## References
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- [Android Developers: Foreground Services](https://developer.android.com/develop/background-work/services/fgs)
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- [Android 12+ Background Start Restrictions](https://developer.android.com/develop/background-work/services/fgs/restrictions-bg-start)
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