访问一个活动在另一个活动中的GoogleMap对象

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

<com.google.android.gms.maps.MapView
    android:id="@+id/mapView"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

private MapView mapView;
private GoogleMap googleMap;

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

    mapView = findViewById(R.id.mapView);
    mapView.onCreate(savedInstanceState);
    mapView.getMapAsync(new OnMapReadyCallback() {
        @Override
        public void onMapReady(GoogleMap map) {
            googleMap = map;
            // 在此处可以对GoogleMap对象进行操作
        }
    });
}

@Override
protected void onResume() {
    super.onResume();
    mapView.onResume();
}

@Override
protected void onPause() {
    super.onPause();
    mapView.onPause();
}

@Override
protected void onDestroy() {
    super.onDestroy();
    mapView.onDestroy();
}

@Override
public void onLowMemory() {
    super.onLowMemory();
    mapView.onLowMemory();
}

Intent intent = new Intent(SourceActivity.this, TargetActivity.class);
intent.putExtra("googleMap", googleMap);
startActivity(intent);

Intent intent = getIntent();
if (intent != null) {
    GoogleMap googleMap = intent.getParcelableExtra("googleMap");
    // 在此处可以对GoogleMap对象进行操作
}