Android Maps v2 custom marker has incorrect position on zoom

Question

I know this has been discussed before, but I actually can't find a solution.

I am adding a custom icon for my marker:

markerUserLocation = mMap.addMarker(new
                        MarkerOptions().position(new
                                LatLng(point.latitude,
                                        point.longitude))
                                .anchor(0.5f, 1.0f)
                               .icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_marker_my_location)));

The problem is when zooming in/out the marker gets positioned in a bad place.

I have tried to play with the anchor values, but no success. Isn't the default anchor mid/bottom of the image ? What i need to do, to actually keep the bottom of the marker at the specified point coordinates, independent of zooming level ?

Here is a ic_marker_my_location icon sample (xhdpi size), as I can't upload the original icon.

LE: this is a really silly, but if i use a smaller marker image... it works correctly... So maybe there is a bug with marker resource image size ? Or if the image is bigger, I need to set some extra parameters ?

Answer 1

I recently experienced a similar issue. It seems to me that there is a bug with the setIcon(Bitmap bitmap) function of the marker.

As soon as i change the image of the marker, the anchor is messed up, so I had to reset it again to the default position.

marker.setIcon(bitmap);
marker.setAnchor(0.5f,1f);

That worked for me using the play services (8.4.0)