Question

我正在使用google map android，我想在片段中使用getSupportFragmentManager（）代替活动，但未定义getSupportFragmentManager（），这是什么问题？

这是我的代码

public class MapFragment extends Fragment implements OnMapReadyCallback {


   private GoogleMap mMap;





    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_map,
                container, false);




      //  MapFragment mapFragment = (MapFragment) getActivity().getFragmentManager().findFragmentById(R.id.map);

        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);





        return view;
    }


    @Override
    public void onMapReady(GoogleMap googleMap) {

        mMap = googleMap;
        // Add a marker in Sydney and move the camera
        LatLng TutorialsPoint = new LatLng(21, 57);
        mMap.addMarker(new
                MarkerOptions().position(TutorialsPoint).title("Tutorialspoint.com"));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(TutorialsPoint));

    }

Answer 1

已编辑：使用这个：

 // Remove old code
        // SupportMapFragment mapFragment = (SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map);

        // don't recreate fragment everytime ensure last map location/state are maintained
        if (mapFragment == null) {
            mapFragment = SupportMapFragment.newInstance();
            mapFragment.getMapAsync(new OnMapReadyCallback() {
                @Override
                public void onMapReady(GoogleMap googleMap) {
                    LatLng latLng = new LatLng(1.289545, 103.849972);
                    googleMap.addMarker(new MarkerOptions().position(latLng)
                            .title("Singapore"));
                    googleMap.animateCamera(CameraUpdateFactory.newLatLng(latLng));
                }
            });
        }

        // R.id.map is a FrameLayout, not a Fragment
        getChildFragmentManager().beginTransaction().replace(R.id.map, mapFragment).commit();

根据此链接Add SupportMapFragment (Android Google Maps) In Fragment

如何在片段中使用getSupportFragmentManager？

1 个答案: