添加的标记不可见 - Mapbox 6.7.0

Question

尝试使用符号层将标记添加到 mapbox 时，标记不可见。尝试添加如下所示的标记，

mapView.getMapAsync(m -> {
        isMapReady = true;
        mapboxMap = m;
        mapboxMap.addOnMapClickListener(MapViewFragment.this);

 addMarkerToSymbolLayer(45);
 updateCameraPosition(location); });

private void updateCameraPosition(Location location){

  if (mapboxMap != null) {
        LatLng latLong = new LatLng();
        if (location != null) {
            latLong.setLatitude(location.getLatitude());
            latLong.setLongitude(location.getLongitude());
        }
        final CameraPosition cameraPosition = new CameraPosition.Builder()
                .target(latLong)
                .build();
        mapboxMap.moveCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
        mapView.postDelayed(() -> mapboxMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition), AppConstants.MAP_CAMERA_ANIMATE_DURATION_MS_5000), 100);

private void addMarkerToSymbolLayer(float headDirection) {

    GeoJsonSource geoJsonSource = new GeoJsonSource("geojson-source",
    Feature.fromGeometry(Point.fromLngLat(77.6387, 12.9610)));
    mapboxMap.addSource(geoJsonSource);

    Bitmap compassNeedleSymbolLayerIcon = BitmapFactory.decodeResource(
            getResources(), R.drawable.compass_needle);

    mapboxMap.addImage("compass-needle-image-id", compassNeedleSymbolLayerIcon);


    SymbolLayer aircraftLayer = new SymbolLayer("aircraft-layer", "geojson-source")
            .withProperties(
                    PropertyFactory.iconImage("compass-needle-image-id"),
                    PropertyFactory.iconRotate(headDirection),
                    PropertyFactory.iconIgnorePlacement(true),
                    PropertyFactory.iconAllowOverlap(true)
            );
    mapboxMap.addLayer(aircraftLayer);

}

如果在移动相机后调用 addMarkerToSymbolLayer()，则标记可见。为什么添加标记取决于相机位置？我必须多次移动相机才能满足我的要求。如何处理？

此外，在已弃用的 MarkerView 和 MarkerViewOptions 中，我在添加标记时没有遇到任何问题。

我注意到，如果在调用函数 addMarkerToSymbolLayer(45) 时有 100 毫秒的延迟，则标记可见并且一切正常！

Answer 1

甚至在加载所有样式之前调用 onMapReady()。在添加符号层之前加载所有样式是必要的。添加以下侦听器并调用在其中添加标记。

mapView.addOnDidFinishLoadingStyleListener(new MapView.OnDidFinishLoadingStyleListener() {
        @Override
        public void onDidFinishLoadingStyle() {

        }
    });

添加的标记不可见 - Mapbox 6.7.0

Added marker is not visible - Mapbox 6.7.0

mapbox

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