Question

我尝试使用回调来在我的片段之间进行通信，但似乎infowindowfragment无法识别我的mapFragment作为其父片段，我可以做些什么工作或者有其他方法来做这件事？

Mapfragment（parentFragment）：

public class MapFragment extends Fragment implements MapView, OnMapReadyCallback, //GoogleMap.InfoWindowAdapter,
    GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener
        ,InfoWindowFragment.OnChildFragmentInteractionListener{

...

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    mapInfoWindowFragment =
            (MapInfoWindowFragment) getChildFragmentManager().findFragmentById(R.id.map);

    mapInfoWindowFragment.getMapAsync(this);

}

...

@Override
public void onMapReady(GoogleMap googleMap) {
    map = googleMap;
    setOnMakerClick(map);
    moveCameraToLastKnowLocation();
}

...

public void setOnMakerClick(final GoogleMap googleMap){
    googleMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
        @Override
        public boolean onMarkerClick(Marker marker) {

            NearDriver nearDriver = markers.get(marker);
            LatLng position = new LatLng(nearDriver.getLatitude()+0.007, nearDriver.getLongitude());
            googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(position, 15));

            //marker.showInfoWindow();

            final int offsetX = (int) getResources().getDimension(R.dimen.marker_offset_x);
            final int offsetY = (int) getResources().getDimension(R.dimen.marker_offset_y);

            final InfoWindow.MarkerSpecification markerSpec =
                    new InfoWindow.MarkerSpecification(offsetX, offsetY);

            InfoWindowFragment infoWindowFragment = new InfoWindowFragment();

            final InfoWindow infoWindow = new InfoWindow(marker, markerSpec, infoWindowFragment);

            mapInfoWindowFragment.infoWindowManager().toggle(infoWindow, true);
            infoWindowFragment.render(nearDriver);
            return true;
        }
    });
}

...

@Override
public void messageFromChildToParent(Place place) {
    Log.d("d", "MapFragment - Place: " + place.getName());
    setOnMakerClick(map);

}

InfoWindowFragment（“ChildFragment”）：

public interface OnChildFragmentInteractionListener {
    void messageFromChildToParent(Place place);
}

@Override
public void onAttach(Context context) {
    super.onAttach(context);

    // check if parent Fragment implements listener
    if (getParentFragment() instanceof OnChildFragmentInteractionListener) {
        mParentListener = (OnChildFragmentInteractionListener) getParentFragment();
    } else {
        throw new RuntimeException("The parent fragment must implement OnChildFragmentInteractionListener");
    }

}

logcat的：

06-13 00:53:57.427 18791-18791/com.rsm.yuri.projecttaxilivre E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.rsm.yuri.projecttaxilivre, PID: 18791
java.lang.RuntimeException: The parent fragment must implement OnChildFragmentInteractionListener
    at com.rsm.yuri.projecttaxilivre.map.InteractiveInfoWindow.InfoWindowFragment.onAttach(InfoWindowFragment.java:175)

Answer 1

我通过更改访问mapfragment的方式解决了这个问题：

@Override
public void onAttach(Context context) {
    super.onAttach(context);

    if (context instanceof MainActivity) {
        MainActivity mainActivity = (MainActivity) context;
        MapFragment parentFragment = mainActivity.getMapFragment();
        if (parentFragment != null) {
            mParentListener = (OnChildFragmentInteractionListener) parentFragment;
        } else {
            throw new RuntimeException("The parent fragment must implement OnChildFragmentInteractionListener");
        }
    }

}

如何在ParentFragment和Appolica Interactive InfoWindow Fragment之间进行通信

1 个答案: