MyPoint extends Point does not return values

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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? 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 json) => _$MyPointFromJson(json);

@override
Map 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

Inizia ispezionando MyPoint.toJson e MyPoint.fromJson nella classe mostrata, quindi confrontali con la serializzazione generata da utils.g.dart. Segui i punti di ingresso della creazione di PointAnnotation e di AnnotationClickListener.onPointAnnotationClick e verifica che pointid e trailspointid sopravvivano alla serializzazione e siano disponibili dopo il clic.

Scritto dal modello di indicizzazione a partire dal testo della issue.