How to use SupportMapFragment inside a Fragment?

I know that there has been an issue in using a nested fragment. But my application was designed to run on fragments and if i will be using activity for the map, my casting functions will have error.

I would like to ask help from you on how to achieve this. I've been searching in the internet but i couldn't find best solution.

I've tried this code:

private void setUpMapIfNeeded() {
    // Do a null check to confirm that we have not already instantiated the map.
    if (mMap == null) {
        // Try to obtain the map from the SupportMapFragment.
        mMap = ((SupportMapFragment) myFragmentActivity.getSupportFragmentManager().findFragmentById(
        // Check if we were successful in obtaining the map.
        if (mMap != null) {

this would give me duplicate error because of is a fragment inside my fragment.

So I look for a work around, this time, is a frame layout and in the run time I created the SupportMapFragment to it.

SupportMapFragment mSupportMapFragment = new SupportMapFragment();
            .replace(, mSupportMapFragment).commit();

though this does not give me a duplicate every time a close and open the fragment. but my error is that mSupportMapFragment.getMap is always null., I don't get it why its null?.

mMap = mSupportMapFragment.newInstance().getMap();
        if (mMap != null){
            Log.e("ReportFragment","mMap is not empty");
            Log.e("ReportFragment","mMap is empty");

I would really appreciate any inputs from you guys, or do you have another work around but still in this process, i.e Fragment inside fragment




getMap() is deprecated

The code should be something like this in a Fragment:

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    View v = inflater.inflate(R.layout.fragment_location, container, false);

    mMapFragment = (SupportMapFragment) getChildFragmentManager().findFragmentById(;

    return v;   

I just met my luck, while making this post,I found what Im looking for.

I have used this:

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.fragment_location, container, false);
    mMapFragment = new SupportMapFragment() {
        public void onActivityCreated(Bundle savedInstanceState) {
            mMap = mMapFragment.getMap();
            if (mMap != null) {
    getChildFragmentManager().beginTransaction().add(, mMapFragment).commit();
return v;   

Credit to this Old post

I have used it in the given manner and it's working fine.

It's also working with getChildFragmentManager()


public class MapyFragment extends Fragment implements OnMapReadyCallback {

    private Context mContext;
    private SupportMapFragment supportMapFragment;
    private GoogleMap map;
    private MarkerOptions currentPositionMarker = null;
    private Marker currentLocationMarker;

    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        mContext = getActivity();
        return inflater.inflate(R.layout.fragment_mapy, container, false);

    public void onActivityCreated(@Nullable Bundle savedInstanceState) {

        mContext = getActivity();

        FragmentManager fm = getActivity().getSupportFragmentManager();/// getChildFragmentManager();
        supportMapFragment = (SupportMapFragment) fm.findFragmentById(;
        if (supportMapFragment == null) {
            supportMapFragment = SupportMapFragment.newInstance();
            fm.beginTransaction().replace(, supportMapFragment).commit();

    public void onMapReady(GoogleMap googleMap) {
        map = googleMap;
        if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
                ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {

    public void updateCurrentLocationMarker(Location currentLatLng){

        if(map != null){

            LatLng latLng = new LatLng(currentLatLng.getLatitude(),currentLatLng.getLongitude());
            if(currentPositionMarker == null){
                currentPositionMarker = new MarkerOptions();

                        .title("My Location").
                currentLocationMarker = map.addMarker(currentPositionMarker);

            if(currentLocationMarker != null)


and fragment_mapy.xml

<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android=""
    map:uiZoomControls="true" />

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