Using Google Maps inside a Fragment in Android

Question

I am trying to load Google Maps inside fragment ,and I keep getting the same error regardless of what solution I am trying to implement. I have already gone though all of t

Answer 1

You can do this as a normal fragment.

public void replaceFragment(Fragment fragment, String fragmentTag){
            FragmentManager fragmentManager = getFragmentManager();
            FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
            fragmentTransaction.replace(R.id.container, fragment);
            fragmentTransaction.addToBackStack(fragmentTag);
            fragmentTransaction.commit();
        }

private void initMap(){
        MapFragment mapFragment = MapFragment.newInstance();
        replaceFragment(mapFragment, fragmentTag);
        mapFragment.getMapAsync(this);
    }

Answer 2

line 66 of your MapsFragment, replace:

// Try to obtain the map from the SupportMapFragment.
mMap = ((SupportMapFragment)getFragmentManager().findFragmentById(R.id.map))
    .getMap();

by:

// Try to obtain the map from the SupportMapFragment.
mMap = ((SupportMapFragment)getChildFragmentManager().findFragmentById(R.id.map))
    .getMap();

Because your map fragment is a fragment in a fragment, and not managed by the top level FragmentManager.

Also, I am not sure but you may want to setup your Map asynchronously:

    ((SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map)).getMapAsync(
    new OnMapReadyCallback() {
        @Override
        public void onMapReady(GoogleMap googleMap) {
            mMap = googleMap;
            setUpMap();
        }
    });