MyPoint extends Point does not return values

Hi all

As there is no active discussionsomewhere I ask my question here, event it is not the place to do.
I need to Extend Points with a PointID to be able to load data of this point later in the code

This is how I initialise Points

        pointAnnotationManager?.create(PointAnnotationOptions(
          geometry: **MyPoint(
            coordinates: Position(
              double.parse(place.attributes!.longitude.toString()),
              double.parse(place.attributes!.latitude.toString()),
            ),
            pinNumber: place.id,
            trailPinNumber: place.id,
          ).toJson(),**
          textField: "${place.id}",
          ///ToDo Set textOpacity to 0 when no text should be displayed
          textOpacity: 1,
          textOffset: [0.0, -4.0],
          iconOpacity: 0.5,
          iconSize: 0.75,
          iconOffset: [0.0, -30.0],
          symbolSortKey: 10,
          image: selectedImageData,
        ));

The next step is reading a point when Clicked

class AnnotationClickListener extends OnPointAnnotationClickListener {
  _MapBoxMapScreenState mapState;
  Animation<double>? animation;
  AnimationController? controller;
  AnnotationClickListener(this.mapState);

  @override
  void onPointAnnotationClick(PointAnnotation selectedannotation) async {
    if (await mapState.mapboxMap.style.styleSourceExists("source")) {
      await mapState.mapboxMap.style.removeStyleLayer("layer");
      await mapState.mapboxMap.style.removeStyleSource("source");
    }

    // build route from puck position to the clicked annotation
    final start = await mapState.mapboxMap.style.getPuckPosition();
    **final end = MyPoint.fromJson((selectedannotation.geometry)!.cast());**
    final coordinates = await fetchRouteCoordinates(start, end.coordinates, ZadaApp.mapboxAccessToken);
    final selectedpinNumber = end.pointid;
    final selectedtrailPinNumber = end.trailspointid;

    **print('PinInformation: ${end.pointid}');**
    **print('TrailPintInformation: ${end.trailspointid}');**
  }
}

here is the toJson and fromJson Funcion to serialise end deserialise

part 'utils.g.dart';

@JsonSerializable(explicitToJson: true)
class MyPoint extends Point {
  int? pointid;
  int? trailspointid;
  MyPoint({
    super.bbox,
    required super.coordinates,
    this.pointid,
    this.trailspointid
  });

  @override
  factory MyPoint.fromJson(Map<String, dynamic> json) => _$MyPointFromJson(json);

  @override
  Map<String, dynamic> toJson() => super.serialize(_$MyPointToJson(this));

  @override
  MyPoint clone() => MyPoint(coordinates: coordinates.clone(), bbox: bbox?.clone(), pointid: pointid, trailspointid: trailspointid);

  @override
  int get hashCode => Object.hashAll([
    type,
    ...coordinates,
    if (bbox != null) ...bbox!,
    if (pointid != null) pointid!,
    if (trailspointid != null) trailspointid!,
  ]);

  @override
  bool operator == (Object other) => other is MyPoint
      ? coordinates == other.coordinates
      : false;
}

The output of end.pointid is always empty in the code

print('PinInformation: ${end.pointid}');
print('TrailPintInformation: ${end.trailspointid}');

Any hit are welcome many thanks for your help

Roman

Beginnen Sie mit der Untersuchung von MyPoint.toJson und MyPoint.fromJson in der gezeigten Klasse und vergleichen Sie sie anschließend mit der von utils.g.dart generierten Serialisierung. Verfolgen Sie die Einstiegspunkte für die Erstellung von PointAnnotation und für AnnotationClickListener.onPointAnnotationClick, und überprüfen Sie, dass pointid und trailspointid die Serialisierung überstehen und nach dem Klick verfügbar sind.