Create Map in android

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Step 1 Dependances

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implementation 'com.google.android.gms:play-services-maps:17.0.0'

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Step 2 add Google Console Key 

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<meta-data
    android:name="com.google.android.geo.API_KEY"
    android:value="AIzaSyDRsC4b2iPcrvgnwd4HcBnTIyXMW9g05EU"/>

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Step 3 add permission

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<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

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Step 4 add design show map

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<fragment

       android:layout_width="match_parent"

       android:layout_height="match_parent"

       android:id="@+id/map"

       android:name="com.google.android.gms.maps.MapFragment" />

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Step 5 add code java file

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public class MainActivity extends AppCompatActivity {

//create map Variable
    GoogleMap map;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

//Map show fragment show
        MapFragment mapFragment=(MapFragment) getFragmentManager().findFragmentById(R.id.map);

//method create getMapAsync
        mapFragment.getMapAsync(new OnMapReadyCallback() {
            @Override
            public void onMapReady(@NonNull GoogleMap googleMap) {

                                           //save map variable
                map=googleMap;

                                           //location set
                LatLng sixroad=new LatLng(33.626057,73.071442);

//add marker
                map.addMarker(new MarkerOptions().position(sixroad).title("Marker in 6th Road"));

//move location
                map.moveCamera(CameraUpdateFactory.newLatLng(sixroad));
           //zoom location     map.animateCamera(CameraUpdateFactory.newLatLngZoom(sixroad, 15));

//Long press add Marker
                map.setOnMapLongClickListener(new GoogleMap.OnMapLongClickListener() {
                    @Override
                    public void onMapLongClick(@NonNull LatLng latLng) {
      //add marker onMapLongClick                 

map.addMarker(new MarkerOptions().position(latLng));
                    }
                });
            }
        });
    }

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