Android fix: fix jni callback signature
Android fix: fix jni callback signature

niavok/libARNetwork,kradhub/libARNetwork,niavok/libARNetwork,Parrot-Developers/libARNetwork,kradhub/libARNetwork,Parrot-Developers/libARNetwork,niavok/libARNetwork,Parrot-Developers/libARNetwork,Parrot-Developers/libARNetwork,kradhub/libARNetwork