代码:
private GoogleMap mMap;
MapFragment mMapFragment = MapFragment.newInstance();
FragmentTransaction fragmentTransaction = this.getFragmentManager().beginTransaction();
fragmentTransaction.add(R.id.rl_map, mMapFragment);
fragmentTransaction.commit();
mMap = mMapFragment.getMap();
在相对布局中显示地图(R.id.rl_map)。但是我添加标记marder时:
mMap.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title("Hello world"));
会报空指针异常。