google maps are returning null pointer exception

Question

when I am trying to show the maps on my fragment it is returning null pointer exception. I have added everything to the manifest each and every permission. I am attaching the f

Answer 1

java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.android.gms.maps.GoogleMap com.google.android.gms.maps.SupportMapFragment.getMap()' on a null object reference

1. You can use getChildFragmentManager() instead of getActivity().getSupportFragmentManager()
2. Remove initilizeMap(); from your onResume method .

Reference

SupportMapFragment.getMap() on a null object reference

Answer 2

You have to wait until map getting loaded....

public class ChatFragment extends Fragment implements OnMapReadyCallback {

    private void initilizeMap() {
      //SupportMapFragment mapFragment = (SupportMapFragment) fragmentManager.findFragmentById(R.id.map);

      SupportMapFragment mapFrag = (SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map);
      mapFrag.getMapAsync(this);
    }

    @Override
    public void onMapReady(final GoogleMap map) {
        googleMap = map;
        //Do other stuff..........
    }

}

Edit

SupportMapFragment mapFrag = (SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map);

Check the edit code, use ChildFragmentManager.

Answer 3

Replace this code

SupportMapFragment mapFrag = (SupportMapFragment) getActivity().getSupportFragmentManager().findFragmentById(R.id.map);
googleMap = mapFrag.getMap();

with

googleMap = ((SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map)).getMap();

Check it!