Google maps can not resolve method getMap()

Question

I am using google map in my project. it was working but i did something( dont know what)now getMap() gives error. i think i update something. how can i fix it?

my code is like that;

GoogleMap googleMap;
..
 if (locationManagerCheck.isLocationServiceAvailable()) {
        if (googleMap == null) {
            try {
                googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();//ERROR
            } catch (Exception e) {
                Toast.makeText(getApplicationContext(),
                        e.getMessage(), Toast.LENGTH_SHORT)
                        .show();
            }...

i tried make it:

  googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMapAsync(this);

but 'this' gives another error can you help me?

edit:

    public class MainActivity extends FragmentActivity implements OnMapReadyCallback {

 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


 LocationManager_check locationManagerCheck = new LocationManager_check(
                this);


        if (locationManagerCheck.isLocationServiceAvailable()) {
            if (googleMap == null) {
                try {
                    MapFragment mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
                    mapFragment.getMapAsync(this);

                } catch (Exception e) {
                    Toast.makeText(getApplicationContext(),
                            e.getMessage(), Toast.LENGTH_SHORT)
                            .show();
                }
               {
                    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                        // TODO: Consider calling
                        //    ActivityCompat#requestPermissions
                        // here to request the missing permissions, and then overriding
                        //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
                        //                                          int[] grantResults)
                        // to handle the case where the user grants the permission. See the documentation
                        // for ActivityCompat#requestPermissions for more details.
                        return;
                    }
                    googleMap.setMyLocationEnabled(true);

                    googleMap.setOnInfoWindowClickListener(new GoogleMap.OnInfoWindowClickListener() {
                        @Override
                        public void onInfoWindowClick(final Marker marker) {....}



}

 @Override
    public void onMapReady(GoogleMap Map) {
        googleMap=Map;
    }



}

Answer 1

You should give a look to documentation

To add a map to an activity, add map fragment to your layout :

<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
    android:name="com.google.android.gms.maps.MapFragment"
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

And then use it in your activity :

public class MainActivity extends FragmentActivity implements OnMapReadyCallback {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        MapFragment mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);

    }

    @Override
    public void onMapReady(GoogleMap map) {

         map.setMyLocationEnabled(true);
         map.setOnInfoWindowClickListener(new GoogleMap.OnInfoWindowClickListener() {
                    @Override
                    public void onInfoWindowClick(final Marker marker) {....}

}

The map will be created in async way, and the onMapReady function will be called when map is ready,in this function you will be able to add markers, change position, title, zoom or whatever.

Answer 2

At the point you're retrieving the map it is null. You need to do it when you now the views have been initialised.

For example, in a Fragment you could do it in onViewCreated or in an Activity in onCreate after calling setContentView(R.layout.your_layout);

For example:

@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    MapView mapView = ((MapFragment) getFragmentManager().findFragmentById(R.id.map));
    mapView.getMapAsync(this);
}