Incorrect behaviour with zoom on Android Google maps

Question

im having a weird problem with Google maps for android.

All is working fine, but when the user starts the activity with the map, i want to zoom in and position the camera on a especified location.

this is my code:

    LatLng l = new LatLng(40.446951,-3.693295);
    defaultPos = mapa.addMarker(new MarkerOptions().position(new LatLng(l.latitude, l.longitude)).icon(BitmapDescriptorFactory.defaultMarker((float) 250.0)));
    Log.d("mappoi","zoom to");
    mapa.animateCamera(CameraUpdateFactory.zoomTo(17.0f));
    mapa.animateCamera(CameraUpdateFactory.newLatLng(l));

So, as you can see, im creating a new LatLng object and using it to create a Marker on the map, then i want to center camera on that position and zoom in.

I dont know why, but the zoom only works the first time it gets executed, so when i fresh install my app it works fine, but if i go back and restart the activity, it doesnt do any zoom and keeps the default zoom level, even if i close and restart my app it doesnt work anymore, only if i uninstall and reinstall again it works again, but only once.

I cant imagine whats going wrong, if it works first time why not the next?

Thanks for any help.

EDIT: My activity is getting killed when i press back button, so onCreate is called every time.

Answer 1

Thanks to gnuanu comment for pointing me to:

How to directly move camera to current location in Google Maps Android API v2?

The solution was to use:

CameraUpdateFactory.newLatLngZoom()

instead of

CameraUpdateFactory.zoomTo()
CameraUpdateFactory.newLatLng()

Maybe newLatLng was changing the zoom level.