mapbox / mapbox/mapbox-maps-flutter

Point annotations disapear when zooming out

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Dominant language
Dart
Stars
380
Forks
204
PR merge metrics
No merged PRs in 30d

Description

Hello,
When i zoom out my pointannotaions dissapear, when i zoom in again they show up once again. Im currently testing on IOS.
Do i do something wrong here?

The following code, is what i use for making the points at the moment:
```
_onMapCreated(MapboxMap mapboxMap) {
this.mapboxMap = mapboxMap;
mapboxMap.annotations.createPointAnnotationManager().then((value) async {
pointAnnotationManager = value;
final ByteData bytes =
await rootBundle.load('assets/images/onboarding0.png');
final Uint8List list = bytes.buffer.asUint8List();

pointAnnotationManager?.setIconAllowOverlap(true);
pointAnnotationManager?.setIconIgnorePlacement(true);
createEventAnnotations();

pointAnnotationManager?.addOnPointAnnotationClickListener(
AnnotationClickListener(context, events, mapboxMap));
});
}
```

```
List events = [
Event(
id: '1',
holderName: 'Pizza Boys',
address: 'husene, 2',
title: 'Spis min gris',
tags: 'food',
description: 'Lækker skinke!',
imageUrls: ['http://example.com/image1.jpg'],
latitude: 56.1685,
longitude: 10.2134,
),]
```

```
void createEventAnnotations() async {
final ByteData bytes =
await rootBundle.load('assets/images/onboarding0.png');
final Uint8List list = bytes.buffer.asUint8List();

List annotationOptions = events.map((event) {
return PointAnnotationOptions(
geometry: Point(
coordinates:
TurfPosition.Position(event.longitude, event.latitude)),
textField: event.title,
textOffset: [0.0, -4.0],
textColor: Colors.red.value,
iconSize: 0.3,
iconOffset: [0.0, -5.0],
symbolSortKey: 10.0,
image: list,
);
}).toList();

pointAnnotationManager?.createMulti(annotationOptions);
}
```


https://github.com/mapbox/mapbox-maps-flutter/assets/55810497/8dec1d56-542e-490d-95fb-02fa6892859b

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with _onMapCreated and createEventAnnotations, especially the PointAnnotationManager configuration and PointAnnotationOptions used for the iOS map. Reproduce the reported behavior by zooming out and back in with the supplied annotation setup, then verify that point annotations remain visible at both zoom levels.

Written by the indexing model from the issue text.

Assessment

Tech stack
dart, flutter
Domain
mobile-dev
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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