Update Geofencing in Callback method

[nguyenphuc1995]

I have more than 40 geofences, but ios limit is only 20
I decided to update my 20 closest geofences when [enter/leaving my geofences]
Unfortunately, when i receive GeofenceEvent.exit in "Callback", i call

final list = await GeofencingManager.getRegisteredGeofenceIds();

and it return me

flutter: MissingPluginException(No implementation found for method GeofencingPlugin.getRegisteredGeofenceIds on channel plugins.flutter.io/geofencing_plugin)

Please help, thank you so much!

[nguyenphuc1995]

[nguyenphuc1995]

solution: code using SendPort

It work when open in foreground, background, but dont work when app's killed, still this error

[nguyenphuc1995]

please help me if you have time @bkonyi