[Bug]: ForegroundServiceDidNotStartInTimeException

[tananaev]

Required Reading

• Confirmed

Plugin Version

5.0.3

Flutter Doctor

[✓] Flutter (Channel stable, 3.38.9, on macOS 26.2 25C56 darwin-arm64, locale
    en-US)
[✓] Android toolchain - develop for Android devices (Android SDK version 36.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 26.0.1)
[✓] Chrome - develop for the web
[✓] Connected device (3 available)
[✓] Network resources

• No issues found!

Mobile operating-system(s)

• iOS
• Android

Device Manufacturer(s) and Model(s)

Wide variety, including Pixels

Device operating-systems(s)

13 - 16

What happened?

We see a very large percentage of foreground service couldn't start on time. I think percentage is way above reasonable. I see 1% user perceived rate in Google Play and about 2% of crash free sessions in Crashlytics.

Almost all errors are happening in headless service mode. Our code looks like this:

@pragma('vm:entry-point')
void headlessTask(bg.HeadlessEvent headlessEvent) async {
  await Firebase.initializeApp();
  await Preferences.init();
  FirebaseCrashlytics.instance.log('geolocation_headless:${headlessEvent.name}');
  switch (headlessEvent.name) {
    case bg.Event.ENABLEDCHANGE:
      await GeolocationService.onEnabledChange(headlessEvent.event);
    case bg.Event.MOTIONCHANGE:
      await GeolocationService.onMotionChange(headlessEvent.event);
    case bg.Event.HEARTBEAT:
      await GeolocationService.onHeartbeat(headlessEvent.event);
    case bg.Event.LOCATION:
      await GeolocationService.onLocation(headlessEvent.event);
  }
}

And I often see long logs before the crash:

{
  "title": "Crashlytics - Custom logs",
  "bundle_identifier": "org.traccar.client",
  "platform": "android",
  "display_version": "9.7.6",
  "build_version": "120",
  "issue_id": "bf0aa132fee08d894d95a404d1a44d14",
  "session_id": "698B4E0003CF000114E5CA741E0C0A94_DNE_0_v2",
  "event_timestamp": "Tue Feb 10 2026 07:26:22 GMT-0800 (Pacific Standard Time)",
  "logs_and_breadcrumbs": [
    {
      "timestamp": "Tue Feb 10 2026 07:25:55 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:location",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:25:55 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:http",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:25:55 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:http",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:26:11 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:location",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:26:11 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:location",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:26:15 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:location",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:26:15 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:http",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:26:16 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:activitychange",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:26:16 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:location",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:26:16 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_motion:true",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:26:16 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:motionchange",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:26:19 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:location",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:26:20 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:location",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:26:21 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:activitychange",
      "source": "crashlytics"
    },
    {
      "timestamp": "Tue Feb 10 2026 07:26:21 GMT-0800 (Pacific Standard Time)",
      "message": "geolocation_headless:location",
      "source": "crashlytics"
    }
  ]
}

This seems incorrect because the first thing foreground service should do is register as a foreground service, but based on the logs it seems like it's done a lot of other work and not registered, which I think excludes the possibility that it's just a slow device.

Plugin Code and/or Config

{
  "actions": [],
  "activity": {
    "activityRecognitionInterval": 10000,
    "disableMotionActivityUpdates": false,
    "disableStopDetection": false,
    "minimumActivityRecognitionConfidence": 75,
    "motionTriggerDelay": 0,
    "stopOnStationary": false,
    "triggerActivities": "in_vehicle, on_bicycle, on_foot, running, walking"
  },
  "activityRecognitionInterval": 10000,
  "allowIdenticalLocations": false,
  "allowTap": true,
  "app": {
    "backgroundPermissionRationale": {
      "message": "For reliable tracking, please enable {backgroundPermissionOptionLabel} location access.",
      "negativeAction": "Cancel",
      "positiveAction": "Change to {backgroundPermissionOptionLabel}",
      "title": "Allow {applicationName} to access this device's location in the background"
    },
    "enableHeadless": true,
    "foregroundService": true,
    "headlessJobService": "com.transistorsoft.flutter.backgroundgeolocation.HeadlessTask",
    "heartbeatInterval": -1,
    "mainActivityName": null,
    "notification": {
      "actions": [],
      "allowTap": true,
      "channelDescription": "Location tracking",
      "channelId": "bggeo",
      "channelName": "BackgroundGeolocation",
      "color": "",
      "importance": 2,
      "largeIcon": "",
      "layout": "",
      "priority": -1,
      "smallIcon": "drawable\/ic_stat_notify",
      "sticky": false,
      "strings": {},
      "tapActivity": "",
      "text": "Tracking location",
      "title": "Background Geolocation"
    },
    "schedule": [],
    "scheduleUseAlarmManager": false,
    "startOnBoot": true,
    "stopOnTerminate": false
  },
  "authorization": {
    "accessToken": "✱✱✱",
    "expires": -1,
    "refreshHeaders": {},
    "refreshPayload": {},
    "refreshToken": "✱✱✱",
    "refreshUrl": "✱✱✱",
    "strategy": "JWT"
  },
  "autoSync": false,
  "autoSyncThreshold": 0,
  "backgroundPermissionRationale": {
    "message": "For reliable tracking, please enable {backgroundPermissionOptionLabel} location access.",
    "negativeAction": "Cancel",
    "positiveAction": "Change to {backgroundPermissionOptionLabel}",
    "title": "Allow {applicationName} to access this device's location in the background"
  },
  "batchSync": false,
  "channelDescription": "Location tracking",
  "channelId": "bggeo",
  "channelName": "BackgroundGeolocation",
  "color": "",
  "debug": false,
  "deferTime": 0,
  "desiredAccuracy": 10,
  "didDeviceReboot": true,
  "didShowBackgroundPermissionRationale": false,
  "disableAutoSyncOnCellular": false,
  "disableElasticity": true,
  "disableLocationAuthorizationAlert": false,
  "disableMotionActivityUpdates": false,
  "disableProviderChangeRecord": false,
  "disableStopDetection": false,
  "distanceFilter": 75,
  "elasticityMultiplier": 1,
  "enableHeadless": true,
  "enableTimestampMeta": false,
  "enabled": false,
  "extras": {},
  "fastestLocationUpdateInterval": 30000,
  "foregroundService": true,
  "geofenceInitialTriggerEntry": true,
  "geofenceModeHighAccuracy": true,
  "geofenceProximityRadius": 1000,
  "geofenceTemplate": "",
  "geolocation": {
    "allowIdenticalLocations": false,
    "deferTime": 0,
    "desiredAccuracy": 10,
    "disableElasticity": true,
    "disableLocationAuthorizationAlert": false,
    "distanceFilter": 75,
    "elasticityMultiplier": 1,
    "enableTimestampMeta": false,
    "fastestLocationUpdateInterval": 30000,
    "filter": {
      "burstWindow": 10,
      "filterDebug": false,
      "kalmanDebug": false,
      "kalmanProfile": 0,
      "maxBurstDistance": 300,
      "maxImpliedSpeed": 60,
      "odometerAccuracyThreshold": 20,
      "odometerUseKalmanFilter": true,
      "policy": 2,
      "rollingWindow": 5,
      "trackingAccuracyThreshold": 100,
      "useKalman": true
    },
    "geofenceInitialTriggerEntry": true,
    "geofenceModeHighAccuracy": true,
    "geofenceProximityRadius": 1000,
    "locationAuthorizationRequest": "Always",
    "locationTimeout": 60,
    "locationUpdateInterval": 300000,
    "stationaryRadius": 150,
    "stopAfterElapsedMinutes": 0,
    "stopTimeout": 5,
    "useCLLocationAccuracy": false,
    "useSignificantChangesOnly": false
  },
  "headers": {},
  "headlessJobService": "com.transistorsoft.flutter.backgroundgeolocation.HeadlessTask",
  "heartbeatEnabled": false,
  "heartbeatInterval": -1,
  "http": {
    "autoSync": false,
    "autoSyncThreshold": 0,
    "batchSync": false,
    "disableAutoSyncOnCellular": false,
    "headers": {},
    "maxBatchSize": -1,
    "method": "POST",
    "params": {
      "device_id": "53040646"
    },
    "rootProperty": "location",
    "timeout": 60000,
    "url": "http:\/\/demo.traccar.org:5055\/"
  },
  "httpRootProperty": "location",
  "httpTimeout": 60000,
  "importance": 2,
  "isFirstBoot": false,
  "isMoving": false,
  "largeIcon": "",
  "layout": "",
  "locationAuthorizationRequest": "Always",
  "locationTemplate": "{\"timestamp\": \"<%= timestamp %>\",\"coords\": {\"latitude\": <%= latitude %>,\"longitude\": <%= longitude %>,\"accuracy\": <%= accuracy %>,\"speed\": <%= speed %>,\"heading\": <%= heading %>,\"altitude\": <%= altitude %>},\"is_moving\": <%= is_moving %>,\"odometer\": <%= odometer %>,\"event\": \"<%= event %>\",\"battery\": {\"level\": <%= battery.level %>,\"is_charging\": <%= battery.is_charging %>},\"activity\": {\"type\": \"<%= activity.type %>\"},\"extras\": {},\"_\": \"&id=53040646&lat=<%= latitude %>&lon=<%= longitude %>&timestamp=<%= timestamp %>&\"}",
  "locationTimeout": 60,
  "locationUpdateInterval": 300000,
  "locationsOrderDirection": "ASC",
  "logLevel": 5,
  "logMaxDays": 1,
  "logger": {
    "debug": false,
    "logLevel": 5,
    "logMaxDays": 1
  },
  "maxBatchSize": -1,
  "maxDaysToPersist": 1,
  "maxRecordsToPersist": -1,
  "method": "POST",
  "minimumActivityRecognitionConfidence": 75,
  "motionTriggerDelay": 0,
  "notification": {
    "actions": [],
    "allowTap": true,
    "channelDescription": "Location tracking",
    "channelId": "bggeo",
    "channelName": "BackgroundGeolocation",
    "color": "",
    "importance": 2,
    "largeIcon": "",
    "layout": "",
    "priority": -1,
    "smallIcon": "drawable\/ic_stat_notify",
    "sticky": false,
    "strings": {},
    "tapActivity": "",
    "text": "Tracking location",
    "title": "Background Geolocation"
  },
  "odometer": 0,
  "odometerError": 0,
  "params": {
    "device_id": "53040646"
  },
  "persistMode": 2,
  "persistence": {
    "disableProviderChangeRecord": false,
    "extras": {},
    "geofenceTemplate": "",
    "locationTemplate": "{\"timestamp\": \"<%= timestamp %>\",\"coords\": {\"latitude\": <%= latitude %>,\"longitude\": <%= longitude %>,\"accuracy\": <%= accuracy %>,\"speed\": <%= speed %>,\"heading\": <%= heading %>,\"altitude\": <%= altitude %>},\"is_moving\": <%= is_moving %>,\"odometer\": <%= odometer %>,\"event\": \"<%= event %>\",\"battery\": {\"level\": <%= battery.level %>,\"is_charging\": <%= battery.is_charging %>},\"activity\": {\"type\": \"<%= activity.type %>\"},\"extras\": {},\"_\": \"&id=53040646&lat=<%= latitude %>&lon=<%= longitude %>&timestamp=<%= timestamp %>&\"}",
    "locationsOrderDirection": "ASC",
    "maxDaysToPersist": 1,
    "maxRecordsToPersist": -1,
    "persistMode": 2
  },
  "priority": -1,
  "schedule": [],
  "scheduleUseAlarmManager": false,
  "schedulerEnabled": false,
  "smallIcon": "drawable\/ic_stat_notify",
  "startOnBoot": true,
  "stationaryRadius": 150,
  "sticky": false,
  "stopAfterElapsedMinutes": 0,
  "stopOnStationary": false,
  "stopOnTerminate": false,
  "stopTimeout": 5,
  "strings": {},
  "tapActivity": "",
  "text": "Tracking location",
  "title": "Background Geolocation",
  "trackingMode": 1,
  "triggerActivities": "in_vehicle, on_bicycle, on_foot, running, walking",
  "url": "http:\/\/demo.traccar.org:5055\/",
  "useCLLocationAccuracy": true,
  "useSignificantChangesOnly": false
}

Relevant log output

[christocracy]

This is a well known issue throughout the entire Android development ecosystem (not just Flutter).

See the Wiki about this

[tananaev]

I'm aware that it's a common problem and I've seen that wiki page. But the common rate I've seen before was maybe 0.1%, not 1%+. I think there must be something else.

[tananaev]

@christocracy I have followed the StrictMode debugging steps from the wiki and I only have about ~200 - 300ms total main thread work. Mostly just shared preferences read. Nothing else. I don't think it explains the issue. In addition to that, the crash logs show that we're way past the point of initialization phase where we do the reads. The service has been working for a while.

[christocracy]

I'm going to try something. Instead of registering PendingIntent.getForegroundService on certain APIs capable of launching the app in background -- Geofencing (including the stationary geofence) and ActivityTransition API, I'll use PendingIntent.getBroadcast to launch a simple proxy BroadcastReceiver (which has no time constraints) to launch the FGS at a time when the app process is presumably warm.

With PendingIntent.getForegroundService

Cold app → System launches process
         → startForegroundService() fires (watchdog starts)
         → Process still initializing...
         → Service.onCreate() finally executes
         → startForeground() called
         → Race condition if process startup was slow

With BroadcastReceiver pattern

Cold app → System launches process  
         → BroadcastReceiver.onReceive() executes (process is warm)
         → You call startForegroundService() (watchdog starts NOW)
         → Service.onCreate() executes in warm process
         → startForeground() called a few ms later

[tananaev]

Awesome, thanks. I'm happy to try once you have a version.

[christocracy]

If you'd like to test the current SNAPSHOT from Sonatype, you can tweak your android/build.gradle.kts like so:

allprojects {
    ...
    
    repositories {
        // background_geolocation
        // [DEV] Sonatype SNAPSHOT url
        maven(url = "https://central.sonatype.com/repository/maven-snapshots/")
        google()
        mavenCentral()
    }
}

Verify

cd android
./gradlew app:dependencies | grep tslocationmanager
|    +--- com.transistorsoft:tslocationmanager:4.0.+ -> 4.0.13-SNAPSHOT 

if you don't see 4.0.13-SNAPSHOT (can take a minute or two)

./gradlew app:dependencies --refresh-dependencies | grep tslocationmanager

[tananaev]

So far unfortunately the crash rate is about the same as before.

[christocracy]

I've got some more changes to push to SNAPSHOT.

Show me a few full stacktraces from various devices. Are they similar?

[tananaev]

They're all very similar. Sometimes they have additional caused-by. Here are some samples.

Galaxy M32 (Android 13)

Fatal Exception: android.app.RemoteServiceException$ForegroundServiceDidNotStartInTimeException: Context.startForegroundService() did not then call Service.startForeground(): ServiceRecord{14b27c6 u0 org.traccar.client/com.transistorsoft.locationmanager.service.TrackingService}
       at android.app.ActivityThread.generateForegroundServiceDidNotStartInTimeException(ActivityThread.java:2245)
       at android.app.ActivityThread.throwRemoteServiceException(ActivityThread.java:2216)
       at android.app.ActivityThread.-$$Nest$mthrowRemoteServiceException()
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2508)
       at android.os.Handler.dispatchMessage(Handler.java:106)
       at android.os.Looper.loopOnce(Looper.java:226)
       at android.os.Looper.loop(Looper.java:313)
       at android.app.ActivityThread.main(ActivityThread.java:8779)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:604)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1067)

Armor_X13 (Android 14)

Fatal Exception: android.app.RemoteServiceException$ForegroundServiceDidNotStartInTimeException: Context.startForegroundService() did not then call Service.startForeground(): ServiceRecord{3874e5f u0 org.traccar.client/com.transistorsoft.locationmanager.service.TrackingService}
       at android.app.ActivityThread.generateForegroundServiceDidNotStartInTimeException(ActivityThread.java:2149)
       at android.app.ActivityThread.throwRemoteServiceException(ActivityThread.java:2120)
       at android.app.ActivityThread.-$$Nest$mthrowRemoteServiceException()
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2414)
       at android.os.Handler.dispatchMessage(Handler.java:106)
       at android.os.Looper.loopOnce(Looper.java:205)
       at android.os.Looper.loop(Looper.java:294)
       at android.app.ActivityThread.main(ActivityThread.java:8233)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:573)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1058)

Galaxy S20 FE (Android 13)

Fatal Exception: android.app.RemoteServiceException$ForegroundServiceDidNotStartInTimeException: Context.startForegroundService() did not then call Service.startForeground(): ServiceRecord{3710d1 u0 org.traccar.client/com.transistorsoft.locationmanager.service.ActivityRecognitionService}
       at android.app.ActivityThread.generateForegroundServiceDidNotStartInTimeException(ActivityThread.java:2245)
       at android.app.ActivityThread.throwRemoteServiceException(ActivityThread.java:2216)
       at android.app.ActivityThread.-$$Nest$mthrowRemoteServiceException()
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2508)
       at android.os.Handler.dispatchMessage(Handler.java:106)
       at android.os.Looper.loopOnce(Looper.java:226)
       at android.os.Looper.loop(Looper.java:313)
       at android.app.ActivityThread.main(ActivityThread.java:8762)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:604)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1067)
Caused by android.app.StackTrace: Last startServiceCommon() call for this service was made here
       at android.app.ContextImpl.startServiceCommon(ContextImpl.java:1988)
       at android.app.ContextImpl.startForegroundService(ContextImpl.java:1933)
       at android.content.ContextWrapper.startForegroundService(ContextWrapper.java:839)
       at android.content.ContextWrapper.startForegroundService(ContextWrapper.java:839)
       at com.transistorsoft.locationmanager.service.ServiceLaunchReceiver.onReceive(r8-map-id-996e6b52e2ef7b30ff90df7beef88f90e0dd00289fdf2ff6cf7fe9c2d88fcdd8:33)
       at android.app.ActivityThread.handleReceiver(ActivityThread.java:4894)
       at android.app.ActivityThread.-$$Nest$mhandleReceiver()
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2420)
       at android.os.Handler.dispatchMessage(Handler.java:106)
       at android.os.Looper.loopOnce(Looper.java:226)
       at android.os.Looper.loop(Looper.java:313)
       at android.app.ActivityThread.main(ActivityThread.java:8762)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:604)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1067)

Pixel 8 Pro (Android 16)

Fatal Exception: android.app.RemoteServiceException$ForegroundServiceDidNotStartInTimeException: Context.startForegroundService() did not then call Service.startForeground(): ServiceRecord{49fac65 u0 org.traccar.client/com.transistorsoft.locationmanager.service.ActivityRecognitionService c:org.traccar.client}
       at android.app.ActivityThread.generateForegroundServiceDidNotStartInTimeException(ActivityThread.java:2527)
       at android.app.ActivityThread.throwRemoteServiceException(ActivityThread.java:2495)
       at android.app.ActivityThread.-$$Nest$mthrowRemoteServiceException()
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2879)
       at android.os.Handler.dispatchMessage(Handler.java:132)
       at android.os.Looper.dispatchMessage(Looper.java:333)
       at android.os.Looper.loopOnce(Looper.java:263)
       at android.os.Looper.loop(Looper.java:367)
       at android.app.ActivityThread.main(ActivityThread.java:9287)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:566)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:929)
Caused by android.app.StackTrace: Last startServiceCommon() call for this service was made here
       at android.app.ContextImpl.startServiceCommon(ContextImpl.java:2115)
       at android.app.ContextImpl.startForegroundService(ContextImpl.java:2069)
       at android.content.ContextWrapper.startForegroundService(ContextWrapper.java:875)
       at android.content.ContextWrapper.startForegroundService(ContextWrapper.java:875)
       at com.transistorsoft.locationmanager.service.ServiceLaunchReceiver.onReceive(r8-map-id-996e6b52e2ef7b30ff90df7beef88f90e0dd00289fdf2ff6cf7fe9c2d88fcdd8:33)
       at android.app.ActivityThread.handleReceiver(ActivityThread.java:5301)
       at android.app.ActivityThread.-$$Nest$mhandleReceiver()
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2715)
       at android.os.Handler.dispatchMessage(Handler.java:132)
       at android.os.Looper.dispatchMessage(Looper.java:333)
       at android.os.Looper.loopOnce(Looper.java:263)
       at android.os.Looper.loop(Looper.java:367)
       at android.app.ActivityThread.main(ActivityThread.java:9287)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:566)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:929)

[tananaev]

By the way, Crashlytics does seem to show some improvement in this last version, but still not ideal rate.

[christocracy]

cd android
./gradlew app:dependencies --refresh-dependencies | grep tslocationmanager

build 4028. this one adds a few more tricks.

02-14 12:21:35.291   322   355 I TSLocationManager: ╔═════════════════════════════════════════════
02-14 12:21:35.291   322   355 I TSLocationManager: ║ TSLocationManager version: 4.0.13-SNAPSHOT (4028)
02-14 12:21:35.291   322   355 I TSLocationManager: ╠═════════════════════════════════════════════

[christocracy]

Correction: build 4028.

[tananaev]

I'm trying 4029 and so far it looks very promising. Crash rate went from 1%+ to ~0.3%. Still waiting for more data, but early data looks really good. Thanks for a quick update.

[christocracy]

Latest snapshot is 4.0.15-SNAPSHOT (4035).

This is now released to 4.0.15

I've add a few more tricks since 4028.

On cold boot, the SDK now queues all FGS launches and waits for 2000ms (configurable via AppConfig.serviceLaunchDelay, though not yet exposed to dart API).

In addition, and importantly, the SDK will also queue headless-events until the FGS launch-queue is flushed, to prevent client-code from possibly blocking the main-thread while FGS launch-queue is being flushed.

Timeline example:

• T=0ms: Boot event → ServiceLaunchReceiver queues ActivityRecognitionService
  • Boot event → HeadlessEventBroadcaster queues 'boot' event
• T=100ms: Geofence fires → ServiceLaunchReceiver queues GeofencingService
  • Geofence → HeadlessEventBroadcaster queues 'geofence' event
• T=2000ms: ServiceLaunchReceiver drains queue → launches 2 services
• T=2050ms: Both services call startForeground() → notifyServiceReady()
• T=2050ms: HeadlessEventBroadcaster receives signal → drains event queue
• T=2050ms: Customer's BackgroundGeolocationHeadlessTask receives events