Comments (2)
is the marker variable local to the method where you call it? The MapView only keeps a weak reference to the Marker object, so if you do not keep a reference to the Marker object, it will be garbage collected and disappear from the Map. This is documented in the JavaDoc for MapView.addMarker().
The reason for this is, that if the MapView would keep strong references and the user of the MapView does not remove the Markers from the Map, they would be kept until the MapView is disposed and this would be a memory leak. So to keep it safe, the MapView does not take any responsibility to keep a reference to the Marker objects.
You have to either make them fields in the class using the MapView or put them in some collection of markers which prevents them from being garbage collected - this collection itself must be a field or still be referenced somewhere.
As to the second error: this should only be a warning which appears on first accessing the map tiles; I have to change the logging level.
from mapjfx.
Thank you very much, i solved it with a collection of the markers on my own. But your explanation is very good 👍
Best Regards
from mapjfx.
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