Hello.

Testing in Android, plugin works fine, but have an issue: When close app, the notification baloon still shows on device; but stop capturing. There is some extra config to do when close app ?

Settings:

BackgroundLocator.registerLocationUpdate(
    (LocationDto locationDto) async {
        print('location in dart: ${locationDto.toString()}');
        final SendPort send = IsolateNameServer.lookupPortByName(_isolateName);
        send?.send(locationDto);
    },
    androidNotificationCallback: notificationCallback() {
        print('Background Location notificationCallback');
    },
    settings: LocationSettings(
        notificationTitle: "Notification title",
        notificationMsg: "Notification text",
        wakeLockTime: 20,
        autoStop: false,
        interval: 600, // 10 minutes interval
    ),
);

Hi! First of all, wonderful plugin, thanks to the devs.

Now there is a problem with my app. I am trying to create an activity tracker (running, bicycle...), and I need a background gps tracking system to track user position and speed in the background.

The problem is that after exactly 5 minutes with the screen turned off (a person running will keep their phone in their pocket, with the screen turned off), the app stops working and tracking the position. Running it in an Android 10 emulator.

I have a brand new project with the same code as in the installation guide, plus integrated shared preferences plugin to store data. What I've tried is disabling battery optimizations on stock Android emulator, but still nothing. However the app isn't killed when the screen isn't turned off. The notification (although not permanent/uncancellable, this may be the cause) is present. The app works fine on iOS even with the screen turned off.

I am really lost and don't have any idea on what to do since nobody else seems having this problem. I am thinking to send regular notifications every 4 minutes to wake up the phone, but I don't know if the app may be allowed on the play store/app store, and don't know if it would work since there is already the default notification which is updated every 2 seconds.

I've tried running adb logcat to see if the system is going into some battery optimization sleep mode, but not even a hint:

11-30 03:04:31.841  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: b: input svInfo.flags is 8
11-30 03:04:31.903 22510 23088 I flutter : SendPort
11-30 03:04:31.903 22510 22669 I flutter : on receive isolate data
11-30 03:04:31.903 22510 22669 I flutter : LocationDto{latitude: 37.4219983, longitude: -122.084, accuracy: 20.0, altitude: 5.0, speed: 0.0, speedAccuracy: 0.0, heading: 0.0, time: 1606701915000.0, isMocked: false}
11-30 03:04:31.904 22510 22669 I flutter : Instance of 'SharedPreferences'
11-30 03:04:31.904 22510 22669 I flutter : position saved to prefs
11-30 03:04:31.905 22510 22669 I flutter : updated notification
11-30 03:04:32.844  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: a: input svInfo.flags is 8
11-30 03:04:32.844  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: b: input svInfo.flags is 8
11-30 03:04:33.848  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: a: input svInfo.flags is 8
11-30 03:04:33.848  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: b: input svInfo.flags is 8
11-30 03:04:33.910 22510 23088 I flutter : SendPort
11-30 03:04:33.911 22510 22669 I flutter : on receive isolate data
11-30 03:04:33.911 22510 22669 I flutter : LocationDto{latitude: 37.4219983, longitude: -122.084, accuracy: 20.0, altitude: 5.0, speed: 0.0, speedAccuracy: 0.0, heading: 0.0, time: 1606701917000.0, isMocked: false}
11-30 03:04:33.911 22510 22669 I flutter : Instance of 'SharedPreferences'
11-30 03:04:33.911 22510 22669 I flutter : position saved to prefs
11-30 03:04:33.912 22510 22669 I flutter : updated notification
--- THE APP HAS BEEN KILLED BY NOW ---
11-30 03:04:34.853  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: a: input svInfo.flags is 8
11-30 03:04:34.853  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: b: input svInfo.flags is 8
11-30 03:04:35.238  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: a: input svInfo.flags is 8
11-30 03:04:35.238  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: b: input svInfo.flags is 8
11-30 03:04:35.247  2257  2257 W View    : requestLayout() improperly called by com.android.keyguard.AlphaOptimizedLinearLayout{43d94cf V.E...... ......ID 7,0-48,61 #7f0a041c app:id/wifi_group} during layout: running second layout pass
11-30 03:04:35.857  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: a: input svInfo.flags is 8
11-30 03:04:35.857  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: b: input svInfo.flags is 8
11-30 03:04:36.860  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: a: input svInfo.flags is 8
11-30 03:04:36.860  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: b: input svInfo.flags is 8
11-30 03:04:37.863  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: a: input svInfo.flags is 8
11-30 03:04:37.863  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: b: input svInfo.flags is 8
11-30 03:04:38.868  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: a: input svInfo.flags is 8
11-30 03:04:38.868  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: b: input svInfo.flags is 8
11-30 03:04:39.868  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: a: input svInfo.flags is 8
11-30 03:04:39.869  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: b: input svInfo.flags is 8
11-30 03:04:40.870  1750  2445 E GnssHAL_GnssInterface: gnssSvStatusCb: a: input svInfo.flags is 8

Also, this is what the adb shell dumpsys activity services (to show running services) looks like (including only results where the app name com.skuu.test_gps is mentioned):

adrianivascu@MBP-di-Adrian ~ % adb shell dumpsys activity services
ACTIVITY MANAGER SERVICES (dumpsys activity services)
  User 0 active services:
  ...
  * ServiceRecord{f8bc66c u0 com.skuu.test_gps/rekab.app.background_locator.IsolateHolderService}
    intent={act=START cmp=com.skuu.test_gps/rekab.app.background_locator.IsolateHolderService}
    packageName=com.skuu.test_gps
    processName=com.skuu.test_gps
    permission=android.permission.FOREGROUND_SERVICE
    baseDir=/data/app/com.skuu.test_gps-PSh_UuDdM8JXBTFISzogVA==/base.apk
    dataDir=/data/user/0/com.skuu.test_gps
    app=ProcessRecord{273e00f 22510:com.skuu.test_gps/u0a136}
    isForeground=true foregroundId=1 foregroundNoti=Notification(channel=app.rekab/locator_plugin pri=1 contentView=null vibrate=null sound=null defaults=0x0 flags=0x6a color=0xff9e9e9e vis=PRIVATE)
    createTime=-2m24s858ms startingBgTimeout=--
    lastActivity=-659ms restartTime=-2m24s857ms createdFromFg=true
    startRequested=true delayedStop=false stopIfKilled=false callStart=true lastStartId=69

  * ServiceRecord{ae77366 u0 com.google.android.gms/com.google.android.location.internal.GoogleLocationManagerService}
    intent={act=com.google.android.location.internal.GoogleLocationManagerService.START pkg=com.google.android.gms}
    packageName=com.google.android.gms
    processName=com.google.android.gms.persistent
    baseDir=/data/app/com.google.android.gms-VMmaef8awA98_Pupd2d0Xw==/base.apk
    dataDir=/data/user/0/com.google.android.gms
    app=ProcessRecord{2379889 12582:com.google.android.gms.persistent/u0a97}
    createTime=-2h34m56s969ms startingBgTimeout=--
    lastActivity=-2m24s149ms restartTime=-2h34m56s969ms createdFromFg=true
    startRequested=true delayedStop=false stopIfKilled=false callStart=true lastStartId=3
    Bindings:
    * IntentBindRecord{a1fb84a CREATE}:
      intent={act=com.google.android.location.internal.GoogleLocationManagerService.START pkg=com.google.android.gms}
      binder=android.os.BinderProxy@ce433bb
      requested=true received=true hasBound=true doRebind=false
      * Client AppBindRecord{28f30d8 ProcessRecord{273e00f 22510:com.skuu.test_gps/u0a136}}
        Per-process Connections:
          ConnectionRecord{9b9a6be u0 CR WACT com.google.android.gms/com.google.android.location.internal.GoogleLocationManagerService:@214d979}
    All Connections:
      ConnectionRecord{9b9a6be u0 CR WACT com.google.android.gms/com.google.android.location.internal.GoogleLocationManagerService:@214d979}

  Connection bindings to services:
  * ConnectionRecord{9b9a6be u0 CR WACT com.google.android.gms/com.google.android.location.internal.GoogleLocationManagerService:@214d979}
    binding=AppBindRecord{28f30d8 com.google.android.gms/com.google.android.location.internal.GoogleLocationManagerService:com.skuu.test_gps}
    conn=android.os.BinderProxy@214d979 flags=0x81

Active foreground apps - user 0:
  #0: com.skuu.test_gps
    mNumActive=1 mAppOnTop=false mShownWhileTop=true mShownWhileScreenOn=true
    mStartTime=-2m24s682ms mStartVisibleTime=-2m24s682ms
adrianivascu@MBP-di-Adrian ~ % 

Thank you.

I downloaded the project and tested it against the provided example app. I installed it in a real iOS device and started it. Started getting a few sparse location, went to background and the project didn't show any notification but still got a few updates. As soon as you kill the app it stops.

Other info: Had to get some work done according to the iOS migration guide to get it to work with XCode 11

Tested with iPhone XR - 13.4.1

The code provided here: https://github.com/rekab-app/background_locator/wiki/Use-other-plugins-in-callback

I'm trying to link in a background locator using cloud_firestore. The app uses firestore in many other locations.

On iOS only, after initPlatformState (BackgroundLocator.initialize in specific), my future firestore queries get hung in Waiting connection state.

There are no visible errors otherwise and the code works fine on Android.

Hi I have some issue with the plugins not stopping the Isolate, I'm creating a new file with a new name every time in a specific directory before launching the plugins and the plugins retrieve this file by listing every files in this directory (I store the date and a string in the name to not creating a special db for this), the file is stored in static File _currentFile; at the top of the class to not list the directory every callback. When its finished I stop the plugin using

BackgroundLocator.unRegisterLocationUpdate();
IsolateNameServer.removePortNameMapping(_isolateName);

I copy the file and delete it in the directory. When I recreate another file and re-launch the plugin it will see that _currentFile is not null and write to it even though its not the file I want.

I tried the example and its the same, by clicking stop I still see the plugin's thread running in VScode

Using release 1.6.3

When changing iOS permissions from 'Allow only while using App to 'Always allow' when prompted, the iOS app crashes on startup.

At first, the app launches fine with no issues for a few hours after setting the location permissions to 'Always allow'. Thereafter the app seems to crash consistently on app startup.

Note: Setting the location permissions back to 'Only while using the app' removes the crash and the app then functions fine again.

Here are some error logs:

Fatal Exception: NSInternalInconsistencyException
Sending a message before the FlutterEngine has been run.
Fatal Exception: NSInternalInconsistencyException
0  CoreFoundation                 0x1a7dd9754 __exceptionPreprocess
1  libobjc.A.dylib                0x1bc8a07a8 objc_exception_throw
2  CoreFoundation                 0x1a7cdb3f8 -[CFPrefsSearchListSource addManagedSourceForIdentifier:user:]
3  Foundation                     0x1a90af714 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:]
4  Flutter                        0x10288115c (Missing)
5  background_locator             0x10268b8fc (Missing)
6  background_locator             0x10268c864 (Missing)
7  background_locator             0x10268c638 (Missing)
8  background_locator             0x10268ba50 (Missing)
9  Flutter                        0x10288d15c (Missing)
10 Runner                         0x100e97674 AppDelegate.application(_:didFinishLaunchingWithOptions:) + 24 (AppDelegate.swift:24)
11 Runner                         0x100e977a8 @objc AppDelegate.application(_:didFinishLaunchingWithOptions:) (<compiler-generated>)
12 UIKitCore                      0x1aa7c37a8 -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:]
13 UIKitCore                      0x1aa7c523c -[UIApplication _callInitializationDelegatesWithActions:forCanvas:payload:fromOriginatingProcess:]
14 UIKitCore                      0x1aa7cb388 -[UIApplication _runWithMainScene:transitionContext:completion:]
15 UIKitCore                      0x1a9e1ec98 -[_UISceneLifecycleMultiplexer completeApplicationLaunchWithFBSScene:transitionContext:]
16 UIKitCore                      0x1aa387f58 _UIScenePerformActionsWithLifecycleActionMask
17 UIKitCore                      0x1a9e1f830 __101-[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]_block_invoke
18 UIKitCore                      0x1a9e1f238 -[_UISceneLifecycleMultiplexer _performBlock:withApplicationOfDeactivationReasons:fromReasons:]
19 UIKitCore                      0x1a9e1f640 -[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]
20 UIKitCore                      0x1a9e1ee7c -[_UISceneLifecycleMultiplexer uiScene:transitionedFromState:withTransitionContext:]
21 UIKitCore                      0x1a9e273c0 __186-[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:]_block_invoke
22 UIKitCore                      0x1aa295970 +[BSAnimationSettings(UIKit) tryAnimatingWithSettings:actions:completion:]
23 UIKitCore                      0x1aa3a0d68 _UISceneSettingsDiffActionPerformChangesWithTransitionContext
24 UIKitCore                      0x1a9e270b8 -[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:]
25 UIKitCore                      0x1a9c4efa0 __64-[UIScene scene:didUpdateWithDiff:transitionContext:completion:]_block_invoke
26 UIKitCore                      0x1a9c4d920 -[UIScene _emitSceneSettingsUpdateResponseForCompletion:afterSceneUpdateWork:]
27 UIKitCore                      0x1a9c4ebc8 -[UIScene scene:didUpdateWithDiff:transitionContext:completion:]
28 UIKitCore                      0x1aa7c9528 -[UIApplication workspace:didCreateScene:withTransitionContext:completion:]
29 UIKitCore                      0x1aa2befd0 -[UIApplicationSceneClientAgent scene:didInitializeWithEvent:completion:]
30 FrontBoardServices             0x1b736b5d8 -[FBSScene _callOutQueue_agent_didCreateWithTransitionContext:completion:]
31 FrontBoardServices             0x1b7396d44 __94-[FBSWorkspaceScenesClient createWithSceneID:groupID:parameters:transitionContext:completion:]_block_invoke.200
32 FrontBoardServices             0x1b737a6a4 -[FBSWorkspace _calloutQueue_executeCalloutFromSource:withBlock:]
33 FrontBoardServices             0x1b7396a0c __94-[FBSWorkspaceScenesClient createWithSceneID:groupID:parameters:transitionContext:completion:]_block_invoke
34 libdispatch.dylib              0x1a79c681c _dispatch_client_callout
35 libdispatch.dylib              0x1a79ca30c _dispatch_block_invoke_direct
36 FrontBoardServices             0x1b73befa0 __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__
37 FrontBoardServices             0x1b73bec30 -[FBSSerialQueue _targetQueue_performNextIfPossible]
38 FrontBoardServices             0x1b73bf184 -[FBSSerialQueue _performNextFromRunLoopSource]
39 CoreFoundation                 0x1a7d539e8 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
40 CoreFoundation                 0x1a7d538e4 __CFRunLoopDoSource0
41 CoreFoundation                 0x1a7d52be8 __CFRunLoopDoSources0
42 CoreFoundation                 0x1a7d4cbc8 __CFRunLoopRun
43 CoreFoundation                 0x1a7d4c360 CFRunLoopRunSpecific
44 GraphicsServices               0x1bf38a734 GSEventRunModal
45 UIKitCore                      0x1aa7c7584 -[UIApplication _run]
46 UIKitCore                      0x1aa7ccdf4 UIApplicationMain
47 Runner                         0x100e97a70 main + 15 (AppDelegate.swift:15)
48 libdyld.dylib                  0x1a7a08cf8 start

I want to call api on location change. I want to attach JWT_TOKEN which is stored in shared preferences. I am facing.

E/flutter (10000): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: MissingPluginException(No implementation found for method getAll on channel plugins.flutter.io/shared_preferences)

i have same problem as #237

iOS devices. background_locator: 1.6.0+1-beta flutter: 2.2.1

sometimes, app crash when launched.

2021-06-09 08:19:21.006065+0900 Runner[33423:232150] *** Assertion failure in -[FlutterEngine sendOnChannel:message:binaryReply:], FlutterEngine.mm:799
2021-06-09 08:19:21.034245+0900 Runner[33423:232150] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Sending a message before the FlutterEngine has been run.'
*** First throw call stack:
(
	0   CoreFoundation                      0x00007fff20420af6 __exceptionPreprocess + 242
	1   libobjc.A.dylib                     0x00007fff20177e78 objc_exception_throw + 48
	2   CoreFoundation                      0x00007fff2042091f +[NSException raise:format:] + 0
	3   Foundation                          0x00007fff2077056a -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 191
	4   Flutter                             0x000000010a196246 -[FlutterEngine sendOnChannel:message:binaryReply:] + 544
	5   background_locator                  0x000000010a0df5dc -[BackgroundLocatorPlugin sendLocationEvent:] + 316
	6   background_locator                  0x000000010a0df290 -[BackgroundLocatorPlugin prepareLocationMap:] + 128
	7   background_locator                  0x000000010a0df360 -[BackgroundLocatorPlugin locationManager:didUpdateLocations:] + 160
	8   CoreLocation                        0x00007fff234082eb CLClientStopVehicleHeadingUpdates + 79384
	9   CoreLocation                        0x00007fff234074ff CLClientStopVehicleHeadingUpdates + 75820
	10  CoreLocation                        0x00007fff233ef909 CLClientInvalidate + 1479
	11  CoreFoundation                      0x00007fff2038f120 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12
	12  CoreFoundation                      0x00007fff2038e534 __CFRunLoopDoBlocks + 434
	13  CoreFoundation                      0x00007fff20388f44 __CFRunLoopRun + 899
	14  CoreFoundation                      0x00007fff203886d6 CFRunLoopRunSpecific + 567
	15  GraphicsServices                    0x00007fff2bededb3 GSEventRunModal + 139
	16  UIKitCore                           0x00007fff24690e0b -[UIApplication _run] + 912
	17  UIKitCore                           0x00007fff24695cbc UIApplicationMain + 101
	18  Runner                              0x0000000108be7feb main + 75
	19  libdyld.dylib                       0x00007fff202593e9 start + 1
	20  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Sending a message before the FlutterEngine has been run.'
terminating with uncaught exception of type NSException

I think it happened because the plugin was calling FlutterMethodChannel during the initialization of the flutter engine.

FlutterEngine.mm#L798-L799

so, I changed to ignore that exception.

I have been trying to implement this plugin in my app and so far it's very helpful. But I'm trying to make a geofence solution with it and that's where the problems arise.

So far it looks like both initCallback and callback can access other static variables. But after background locator is registered it can't read the variable's updated value.

example:

static int number = 0
static string uid
...
static _initCallback(Map<dynamic, dynamic> params) async {
   _uid = params["uid"];
  print(number) //will always print 0
 }

static _callback(LocationDto locationDto) {
  final SendPort sendPort = IsolateNameServer.lookupPortByName(_isolateName);
  sendPort?.send(locationDto);
  print(number); //will also always print 0
}

BackgroundLocator.registerLocationUpdate(
  _callback,
  initCallback: _initCallback,
  initDataCallback: {"uid": _user.id},
  disposeCallback: _disposeCallback,
  settings: settings.LocationSettings(
      accuracy: settings.LocationAccuracy.HIGH,
      notificationTitle: "Ride Partner",
      notificationMsg: "Running in Background. Searching for orders",
      wakeLockTime: 1,
      autoStop: false,
      distanceFilter: 0.1,
     interval: 5
  ),
);

number = 1;

Also, like how uid is initiated via initDataCallback, every time I need to register a variable do I need to unregister the service then reregister again or is there a more elegant way of registering a variable?

Hello,

I managed to make the package to work. However, when I close the app on android (not just put in background), the location tracking is still active, draining the battery. How to automatically stop the tracking in this case?

Hello. First of all, sorry if this is has been asked before, and thanks for the awesome package!

I set up the package similar to the example, but my Dart callback is never called (no difference if the app is running in the foreground or background).

In the console, I do see something like the following:

sendLocationEvent {callback=2369190748653017841, location={...}}

Where all logs have the same callback identifier.

Looking through the code, this seems to be caused in the IsolateHolderService.kt file. link to the line

private fun sendLocationEvent(result: HashMap<Any, Any>) {
        //https://github.com/flutter/plugins/pull/1641
        //https://github.com/flutter/flutter/issues/36059
        //https://github.com/flutter/plugins/pull/1641/commits/4358fbba3327f1fa75bc40df503ca5341fdbb77d
        // new version of flutter can not invoke method from background thread

        if (backgroundEngine != null) {
            val backgroundChannel =
                    MethodChannel(backgroundEngine?.dartExecutor?.binaryMessenger, Keys.BACKGROUND_CHANNEL_ID)
            Handler(context.mainLooper)
                    .post {
                        Log.d("plugin", "sendLocationEvent $result")
                        backgroundChannel.invokeMethod(Keys.BCM_SEND_LOCATION, result)
                    }
        }
    }

Is there any immediate reason why this might be happening?

I tried running my code on 2 real devices:

• Google Pixel 6 (Android 12)
• Xiaomi Mi A2 (Android 10)

But both show the same behaviour.

The callback specified in BackgroundLocator.registerLocationUpdate is in the LocationCallbackHandler class as per the example:

class LocationCallbackHandler {
  ...
  
  static Future<void> callback(LocationDto locationDto) async {
    print('hello callback');
  }
}

Any help solving this is appreciated!

fix for [ERROR:flutter/shell/common/shell.cc(93)] Dart Error: Dart_LookupLibrary: library 'package:untitled/location_callback_handler.dart' not found. By adding @pragma('vm:entry-point') before a class/ function, we let compiler know that the native code can access it

This error appears in the console when I try to get a release build of a flutter app e: /Users/hrefnholle/fvm/versions/flutter/.pub-cache/hosted/pub.dartlang.org/background_locator-1.6.12/android/src/main/kotlin/rekab/app/background_locator/pluggables/InitPluggable.kt: (22, 55): Type mismatch: inferred type is BinaryMessenger? but BinaryMessenger was expected `Execution failed for task ':background_locator:compileReleaseKotlin'.

Compilation error. See log for more details `

[✓] Flutter (Channel stable, 3.0.0, on macOS 12.6 21G115 darwin-x64, locale fr-CI) Checking Android licenses is taking an unexpectedly long time...[✓] Android toolchain - develop for Android devices (Android SDK version 32.1.0-rc1) [✓] Xcode - develop for iOS and macOS (Xcode 13.4) [✓] Chrome - develop for the web [✓] Android Studio (version 2021.1) [✓] VS Code (version 1.71.2) [✓] Connected device (4 available) [✓] HTTP Host Availability

Upgrade my proyect to:

Doctor summary (to see all details, run flutter doctor -v): [√] Flutter (Channel stable, 3.3.2, on Microsoft Windows [Versi¢n 10.0.22000.978], locale es-MX) [√] Android toolchain - develop for Android devices (Android SDK version 33.0.0) [√] Chrome - develop for the web [√] Visual Studio - develop for Windows (Visual Studio Community 2022 17.2.6) [√] Android Studio (version 2021.2) [√] VS Code (version 1.69.2) [√] Connected device (4 available) [√] HTTP Host Availability

and plugin not works!

debug console::

Launching lib\main.dart on SM A225M in debug mode... e: C:\src\flutter.pub-cache\hosted\pub.dartlang.org\background_locator-1.6.12\android\src\main\kotlin\rekab\app\background_locator\BackgroundLocatorPlugin.kt: (25, 1): Class 'BackgroundLocatorPlugin' is not abstract and does not implement abstract member public abstract fun onNewIntent(p0: Intent): Boolean defined in io.flutter.plugin.common.PluginRegistry.NewIntentListener e: C:\src\flutter.pub-cache\hosted\pub.dartlang.org\background_locator-1.6.12\android\src\main\kotlin\rekab\app\background_locator\BackgroundLocatorPlugin.kt: (215, 43): Type mismatch: inferred type is Map<Any, Any>? but Map<Any, Any> was expected e: C:\src\flutter.pub-cache\hosted\pub.dartlang.org\background_locator-1.6.12\android\src\main\kotlin\rekab\app\background_locator\BackgroundLocatorPlugin.kt: (215, 48): Type mismatch: inferred type is Map<Any, Any>? but Map<Any, Any> was expected e: C:\src\flutter.pub-cache\hosted\pub.dartlang.org\background_locator-1.6.12\android\src\main\kotlin\rekab\app\background_locator\BackgroundLocatorPlugin.kt: (224, 43): Type mismatch: inferred type is Map<Any, Any>? but Map<Any, Any> was expected e: C:\src\flutter.pub-cache\hosted\pub.dartlang.org\background_locator-1.6.12\android\src\main\kotlin\rekab\app\background_locator\BackgroundLocatorPlugin.kt: (224, 48): Type mismatch: inferred type is Map<Any, Any>? but Map<Any, Any> was expected e: C:\src\flutter.pub-cache\hosted\pub.dartlang.org\background_locator-1.6.12\android\src\main\kotlin\rekab\app\background_locator\BackgroundLocatorPlugin.kt: (243, 43): Type mismatch: inferred type is Map<Any, Any>? but Map<Any, Any> was expected e: C:\src\flutter.pub-cache\hosted\pub.dartlang.org\background_locator-1.6.12\android\src\main\kotlin\rekab\app\background_locator\BackgroundLocatorPlugin.kt: (243, 48): Type mismatch: inferred type is Map<Any, Any>? but Map<Any, Any> was expected

e: C:\src\flutter.pub-cache\hosted\pub.dartlang.org\background_locator-1.6.12\android\src\main\kotlin\rekab\app\background_locator\BackgroundLocatorPlugin.kt: (266, 5): 'onNewIntent' overrides nothing e: C:\src\flutter.pub-cache\hosted\pub.dartlang.org\background_locator-1.6.12\android\src\main\kotlin\rekab\app\background_locator\BackgroundLocatorPlugin.kt: (275, 35): Type mismatch: inferred type is BinaryMessenger? but BinaryMessenger was expected e: C:\src\flutter.pub-cache\hosted\pub.dartlang.org\background_locator-1.6.12\android\src\main\kotlin\rekab\app\background_locator\IsolateHolderExtension.kt: (42, 27): Type mismatch: inferred type is BinaryMessenger? but BinaryMessenger was expected

e: C:\src\flutter.pub-cache\hosted\pub.dartlang.org\background_locator-1.6.12\android\src\main\kotlin\rekab\app\background_locator\IsolateHolderService.kt: (269, 35): Type mismatch: inferred type is BinaryMessenger? but BinaryMessenger was expected e: C:\src\flutter.pub-cache\hosted\pub.dartlang.org\background_locator-1.6.12\android\src\main\kotlin\rekab\app\background_locator\pluggables\DisposePluggable.kt: (17, 51): Type mismatch: inferred type is BinaryMessenger? but BinaryMessenger was expected e: C:\src\flutter.pub-cache\hosted\pub.dartlang.org\background_locator-1.6.12\android\src\main\kotlin\rekab\app\background_locator\pluggables\InitPluggable.kt: (22, 55): Type mismatch: inferred type is BinaryMessenger? but BinaryMessenger was expected

FAILURE: Build failed with an exception.

• What went wrong: Execution failed for task ':background_locator:compileDebugKotlin'.

Compilation error. See log for more details

• Try:

Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 8s Exception: Gradle task assembleDebug failed with exit code 1 Exited (sigterm)

so, searching looking for, I found ::

https://github.com/imsamgarg/background_locator

And add to pubspec.yml

background_locator: git: url: https://github.com/imsamgarg/background_locator ref: master

And works only on debug mode !!!

when I run flutter on console ::

flutter run --release

the plugin not works again!!!!!

errors ::

E/flutter (11228): [ERROR:flutter/shell/common/shell.cc(93)] Dart Error: Dart_LookupLibrary: library 'package:myprojectone/repository/location_callback_handler.dart' not found.

Not working on ios only

Error : Unhandled Exception: type 'Null' is not a subtype of type 'LocationDto'

Error line: port.listen( (dynamic data) async { await updateUI(data); }, );