Google Map API for android gives Unknown source error while adding ground overlay with BitmapDescriptor loaded from asset

Question

I use below code to add ground ovelay to google map using api 2 from android.

LatLng ne = currentHole.getNe();
    LatLng sw = currentHole.getSw();
    LatLngBounds mOverlayBound = new LatLngBounds(ne,sw);
    BitmapDescriptor mDesc= BitmapDescriptorFactory.
    fromAsset(currentHole.getGroundOverLay()); GroundOverlayOptions mOverlayOp = new GroundOverlayOptions().image(mDesc).positionFromBounds(mOverlayBound).zIndex(2); mOverlayOp.bearing(0);
    gOverLay = googleMap.addGroundOverlay(mOverlayOp);

All input parmeters are valid and it works fine when I load BitMapDescriptor from resource instead of asset and this code was working fine before recently I touched the code for some changes then it started showing error as below.

02-23 10:07:22.982: W/System.err(3538): java.lang.NullPointerException 

02-23 10:07:22.986: W/System.err(3538): at com.google.k.a.cj.a(Unknown 

       Source) 
02-23 10:07:22.986: W/System.err(3538): at 
        com.google.maps.api.android.lib6.c.dc.<init>(Unknown Source) 
02-23 10:07:22.986: W/System.err(3538): at   com.google.maps.api.android.lib6.c.db.a(Unknown Source) 
02-23 10:07:22.986: W/System.err(3538): at com.google.maps.api.android.lib6.c.eu.<init>(Unknown Source) 
02-23 10:07:22.986: W/System.err(3538): at com.google.maps.api.android.lib6.c.el.a(Unknown Source) 
02-23 10:07:22.986: W/System.err(3538): at com.google.android.gms.maps.internal.l.onTransact(SourceFile:182) 
02-23 10:07:22.986: W/System.err(3538): at android.os.Binder.transact(Binder.java:380) 
02-23 10:07:22.986: W/System.err(3538): at com.google.android.gms.maps.internal.IGoogleMapDelegate$a$a.addGroundOverlay(Unknown Source) 
02-23 10:07:22.986: W/System.err(3538): at com.google.android.gms.maps.GoogleMap.addGroundOverlay(Unknown Source) --

Answer 1

I think the problem is with the line

BitmapDescriptor mDesc= BitmapDescriptorFactory. fromAsset(currentHole.getGroundOverLay());

Which is probably giving you the NullpointerException. Make sure you just pass the String as the image stored in the assests directory of your project. May be the currentHole.getGroundOverLay() is not a valid image in the assests directory and hence it is giving a NullPointer.