Programmatically Creating MapView and Adding a Marker Results in a null pointer exception in the fragment

Issue

I am trying to create a MapView programmatically and add a MarkerPosition as shown below:

MapView mapView = new MapView(getActivity());
((ViewGroup) rootView).addView(mapView);

GoogleMap googleMap = mapView.getMap();
googleMap.addMarker(new MarkerOptions()
        .position(new LatLng(
                Double.parseDouble(
                        mEvent.getEventInfo().mEventData.mLat),
                Double.parseDouble(
                        mEvent.getEventInfo().mEventData.mLng)))
        .title("Marker"));

Manifest File:

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />

<permission
    android:name="com.example.permission.MAPS_RECEIVE"
    android:protectionLevel="signature" />

<uses-permission android:name="com.example.permission.MAPS_RECEIVE" />

I am getting the following error:

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

Solution

because your googleMap is not loaded yet means null and you are adding marker on it which is causing a crash. better to use mapView.getMapAsync(context); rather than mapView.getMap(); and implement this method

    @Override
    public void onMapReady(final GoogleMap map) {
        if(map != null){
        // you are ready to add marker here        
        }
    }

Answered By - Junaid Hafeez