Unhandled Exception: MissingPluginException(No implementation found for method getCurrentPosition on channel flutter.baseflow.com/geolocator)

[dukenebur]

🐛 Bug Report

Hi, hope you are doing well.

I am having this error:

Unhandled Exception: MissingPluginException(No implementation found for method getCurrentPosition on channel flutter.baseflow.com/geolocator)

Dart SDK version is 2.13.1
geolocator: 8.0.5

Could you help me?

Kind Regards

[ricardoboss]

I'm having the same issue on web, but only in production builds. When debugging, it works fine.

[dehypnosis]

In my case it was due to https://pub.dev/packages/permission_handler library which throw same error message with above one when access to Permission.locationWhenInUse.status on web platform.

[mvanbeusekom]

Hi @dukenebur,

This error probably occurs while trying to call getCurrentPosition() from the background. If so make sure to register the platform implementations. Something like this on Flutter 2.11+:

void callbackDispatcher() {
  Workmanager().executeTask(task, inputData) async {
    DartPluginRegistrant.ensureInitialized();
    
    // TODO: Put the rest off the code here...
  }
}

or if you are on older Flutter version use:

void callbackDispatcher() {
  Workmanager().executeTask(task, inputData) async {
    if (defaultTargetPlatform == TargetPlatform.android) {
      GeolocatorAndroid.registerWith();
    } else if (defaultTargetPlatform == TargetPlatform.iOS) {
      GeolocatorApple.registerWith();
    }
    
    // TODO: Put the rest off the code here...
  }
}

A more detailed explanation can be found in this comment.

[ricardoboss]

In their use case, it's "probably" because they are accessing the location while in background. In my case, that app is in foreground, so this doesn't apply to my case. Can you reopen @mvanbeusekom?

[mvanbeusekom]

Hi @ricardoboss,

It would be better if you'd create a new issue describing the behavior including:

• Version of the plugin used.
• Output of the flutter doctor -v command.
• A copy (preferably stack trace) of the exact exception that occurs.
• Platform the issue occurs (in this case "web", but please provide information about browsers used).
• Preferably a reproduction example.

Just a long shot, in the past there were similar issues occurring only on web and only in profile/ release builds, maybe this is related, you could take a look this issue.