メソッドはそのスーパークラスからメソッドをオーバーライドしません

Question

私はそれを実行しようとしたときにどこかputからこのコードをコピーしました。メソッドはスーパークラスからメソッドをオーバーライドしません。私はJava継承の初心者です。これを理解するのを手伝ってください。これをどうすれば解決できますか？このエラーは、最後の2つの@overrideメソッドに対して表示されます。

public class MapViewFragment extends Fragment implements OnMapReadyCallback { 


     private Button btnFindPath; 
     private EditText etOrigin; 
     private EditText etDestination; 
     private ProgressDialog progressDialog; 

     private List<Marker> originMarkers = new ArrayList<>(); 
     private List<Marker> destinationMarkers = new ArrayList<>(); 
     private List<Polyline> polylinePaths = new ArrayList<>(); 


     GoogleMap mGoogleMap; 
     MapView mMapView; 
     View mView; 




     public MapViewFragment() { 
      // Required empty public constructor 
     } 

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

     @Override 
     public View onCreateView(LayoutInflater inflater, ViewGroup container, 
           Bundle savedInstanceState) { 
      // Inflate the layout for this fragment 
      mView = inflater.inflate(R.layout.fragment_map_view, container, false); 

      btnFindPath = (Button) getView().findViewById(R.id.btnFindPath); 
      etOrigin = (EditText) getView().findViewById(R.id.etOrigin); 
      etDestination = (EditText) getView().findViewById(R.id.etDestination); 

      btnFindPath.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 
        sendRequest(); 
       } 
      }); 

      return mView; 
     } 

     private void sendRequest() { 
      String origin = etOrigin.getText().toString(); 
      String destination = etDestination.getText().toString(); 
      if (origin.isEmpty()) { 
       Toast.makeText(getActivity(), "Please enter origin address!", Toast.LENGTH_SHORT).show(); 
       return; 
      } 
      if (destination.isEmpty()) { 
       Toast.makeText(getActivity(), "Please enter destination address!", Toast.LENGTH_SHORT).show(); 
       return; 
      } 

      try { 
       new DirectionFinder(getActivity(), origin, destination).execute(); 
      } catch (UnsupportedEncodingException e) { 
       e.printStackTrace(); 
      } 
     } 



     @Override 
     public void onViewCreated(View view, Bundle savedInstanceState) { 
      super.onViewCreated(view, savedInstanceState); 

      mMapView = (MapView) mView.findViewById(R.id.map); 
      if (mMapView != null){ 
       mMapView.onCreate(null); 
       mMapView.onResume(); 
       mMapView.getMapAsync(this); 

      } 
     } 

     @Override 
     public void onMapReady(GoogleMap googleMap) { 
      MapsInitializer.initialize(this.getActivity()); 
      mGoogleMap = googleMap; 
      googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL); 
      googleMap.addMarker(new MarkerOptions().position(new LatLng(27.717245, 85.323960)).title("Yo ho Kathmandu University") .snippet("I study Here")); 
      CameraPosition Liberty = CameraPosition.builder().target(new LatLng(27.717245, 85.323960)).zoom(16).bearing(0).tilt(45).build(); 
      googleMap.moveCamera(CameraUpdateFactory.newCameraPosition(Liberty)); 

      googleMap.setMyLocationEnabled(true); 


     } 


     @Override 
     public void onDirectionFinderStart() { 
      progressDialog = ProgressDialog.show(getActivity(), "Please wait.", 
        "Finding direction..!", true); 

      if (originMarkers != null) { 
       for (Marker marker : originMarkers) { 
        marker.remove(); 
       } 
      } 

      if (destinationMarkers != null) { 
       for (Marker marker : destinationMarkers) { 
        marker.remove(); 
       } 
      } 

      if (polylinePaths != null) { 
       for (Polyline polyline:polylinePaths) { 
        polyline.remove(); 
       } 
      } 
     } 

     @Override 
     public void onDirectionFinderSuccess(List<Route> routes) { 
      progressDialog.dismiss(); 
      polylinePaths = new ArrayList<>(); 
      originMarkers = new ArrayList<>(); 
      destinationMarkers = new ArrayList<>(); 

      for (Route route : routes) { 
       mGoogleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(route.startLocation, 16)); 
       ((TextView) getView().findViewById(R.id.tvDuration)).setText(route.duration.text); 
       ((TextView) getView().findViewById(R.id.tvDistance)).setText(route.distance.text); 

       originMarkers.add(mGoogleMap.addMarker(new MarkerOptions() 
         .icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_media_pause)) 
         .title(route.startAddress) 
         .position(route.startLocation))); 
       destinationMarkers.add(mGoogleMap.addMarker(new MarkerOptions() 
         .icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_media_play)) 
         .title(route.endAddress) 
         .position(route.endLocation))); 

       PolylineOptions polylineOptions = new PolylineOptions(). 
         geodesic(true). 
         color(Color.BLUE). 
         width(10); 

       for (int i = 0; i < route.points.size(); i++) 
        polylineOptions.add(route.points.get(i)); 

       polylinePaths.add(mGoogleMap.addPolyline(polylineOptions)); 
      } 
     } 
    } 

Answer 1

あなたは "DirectionFinderListener" インターフェースが欠落している：ファイル内 https://github.com/hiepxuan2008/GoogleMapDirectionSimple/tree/master/app/src/main/java/Modules