Initial Geofence events missed for IOS handlers when the app is launched as a service form the background

[stevegaunt]

Your Environment

• Plugin version: 4.7.0

• Platform: IOS

• OS version: 15.5

• Device manufacturer / model: Iphone 12 mini

• Flutter info (flutter doctor): [✓] Flutter (Channel stable, 2.8.1, on macOS 12.4 21F79 darwin-x64, locale en-GB) [✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0) [✓] Xcode - develop for iOS and macOS (Xcode 13.4.1) [✓] Chrome - develop for the web [!] Android Studio (not installed) [✓] IntelliJ IDEA Ultimate Edition (version 2021.2) [✓] Connected device (3 available)

• Plugin config:

bg.Config( // tracking turning off issue is present on both android and ios: we don't want to set preventSuspend to true because it will increase our battery drain dramatically // preventSuspend: true, // heartbeatInterval: 60, autoSync: true, autoSyncThreshold: 20, desiredAccuracy: Config.DESIRED_ACCURACY_HIGH, distanceFilter: 50.0, elasticityMultiplier: 4.0, geofenceModeHighAccuracy: true, stopOnTerminate: false, startOnBoot: true, logLevel: Config.LOG_LEVEL_INFO, logMaxDays: 1, reset: kDebugMode, debug: kDebugMode, locationAuthorizationRequest: 'Always', enableHeadless: true, url: Config.LOCATION_API_URL, headers: headers, batchSync: true, maxBatchSize: 500, maxRecordsToPersist: 100000, maxDaysToPersist: 7, backgroundPermissionRationale: bg.PermissionRationale( title: "Allow {applicationName} to access this device's location even when closed or not in use?", message: "This enables the automatic logging", positiveAction: "Change to \"{backgroundPermissionOptionLabel}\"", negativeAction: "")); }

bg.onGeofence((GeofenceEvent event) { print('[onGeofence] ${event}'); });

## Expected Behavior
The geofence exit event correctly starts the IOS app as a service.
the call-back for the bg.onGeofence should get the initial geofence events that initiated starting the IOS app as a service

## Actual Behavior

The initial geofence event doesn't get handled, only additional geoevents  from once the app as been started as a service gets handled.

## Steps to Reproduce
<!--- reproduce this issue; include code to reproduce, if relevant -->

1.  move to a geofence location 
2. terminate  the app 
3. leave the geofence
4. the geofence event doesn't get handled.

## Context
We need to be able to know when geofences get entered/exit even if the app has been terminated.

## Debug logs
<!-- include iOS / Android logs
- ios XCode logs,
- use #getLog #emailLog methods (@see docs)
- Android: $ adb logcat -s TSLocationManager
-->
<details>
    <summary>Logs</summary>

``` <!-- syntax-highligting:  DO NOT REMOVE -->
PASTE_YOUR_LOGS_HERE

[christocracy]

Register event-listeners before calling .ready(), not after.

[stevegaunt]

@christocracy there currently are.

bg.BackgroundGeolocation.onGeofence((bg.GeofenceEvent event) async {

   log('[geofence] ${event.identifier}, ${event.action}');
});
bg.BackgroundGeolocation.onGeofencesChange((bg.GeofencesChangeEvent event) async {

  log('[GeofencesChangeEvent off] ${event.off}');
 log('[GeofencesChangeEvent on] ${event.on}');
});
//this config is **only** used for the first install and is ignored thereafter. It becomes the default.
var locationTrackingConfig = await sdk.getBaseLocationConfig(deviceInfoHeadersFactory);

try {
  await  bg.BackgroundGeolocation.ready(locationTrackingConfig);
} catch (error, stack) {
  CrashReporting.instance.recordError(error, stack);
}

[christocracy]

I've been running the /example app for years on my main iOS device (currently iPhone 13 Pro @ 15.5). I constantly monitor about 15 geofences throughout my neighbourhood.

I just took a little bike ride.

• After I enter each geofence, I terminate the app.
• After riding out of each geofence, I open app to see if the geofence event is printed on the map (the /example app renders geofence markers on the map with the onGeofence event.

I am not able to reproduce the issue "Initial Geofence events missed for IOS handlers when the app is launched as a service form the background".

Opening the app after riding out of a geofence:

• onGeofence renders markers to highlight a geofence event.
• red dot denotes EXIT event.
• blue dot = location where event occurred.
• If somehow onGeofence did not fire after re-launching in background, the markers would not be rendered.

Posted events to demo server:

• Geofence circled red is the geofence from screenshot above:

[iphonedev4radixweb]

Hello @christocracy, I need to track geofence event action in the terminate state of the app. In IOS it's not working, I have also tried preventSuspend true in geofence config. Please help me with that. Thanks in advance!

Software Version: 15.3.1 Device: iPhone X

[christocracy]

I have also tried preventSuspend tru

This has nothing to do with geofence firing.

Software Version: 15.3.1

This os version is know to have bugs. Upgrade to latest.

[iphonedev4radixweb]

Okay, then I will not use preventSuspend & let me try in another version. I will get back to you. Thanks!

[github-actions[bot]]

This issue is stale because it has been open for 30 days with no activity.

[github-actions[bot]]

This issue was closed because it has been inactive for 14 days since being marked as stale.