在我的项目中,我以编程方式在片段上加载我的地图。但是,在此地图上添加标记无效。没有显示错误,但标记也不在地图上。
我正在关注specification所以我不知道为什么它不起作用。 (标记和相机的Lat和Lng是相同的)
我的片段代码
public class MainMapFragment extends Fragment implements OnMapReadyCallback {
SupportMapFragment mMapFragment;
static final LatLng LIBRARY = new LatLng(Lat, Lng);
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
return inflater.inflate(R.layout.main_map_layout,container,false);
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
//Set the initial stage of the map
//It is set on code (not on the xml) because the map is created programmatically
GoogleMapOptions options = new GoogleMapOptions();
CameraPosition ufv_position = new CameraPosition.Builder()
.target(new LatLng(Lat,Lng))
.zoom(15)
.tilt(0)
.bearing(40)
.build();
options.mapType(GoogleMap.MAP_TYPE_NORMAL)
.compassEnabled(false)
.rotateGesturesEnabled(false)
.tiltGesturesEnabled(false)
.camera(ufv_position);
//Load the map with the given options
mMapFragment = SupportMapFragment.newInstance(options);
FragmentTransaction fragmentTransaction =
getChildFragmentManager().beginTransaction();
fragmentTransaction.add(R.id.map, mMapFragment);
fragmentTransaction.commit();
}
@Override
public void onMapReady(GoogleMap googleMap) {
googleMap.addMarker(new MarkerOptions()
.position(LIBRARY)
.title("Library")
.icon(BitmapDescriptorFactory.fromResource(R.drawable.book)));
}
}
答案 0 :(得分:0)
添加mMapFragment.getMapAsync(this);
,以便调用onMapReady方法