android - 缩小 Android 谷歌地图时群集标记计算错误

Question

我试图在我的 map 上实现一个集群标记，它表现得有点奇怪，首先，它向我显示了具有正确数量标记的集群标记，但是当我缩小以加入它生成的其他标记时另一个我不知道它来自哪里以及为什么它显示在 map 上的集群标记，我将添加一些图像来更好地解释它:

这是放大后的图像，如您所见，我有一个 8 点的聚类标记和另一个单独的聚类标记，所以当我缩小时它应该给我一个 9 点的 clusterMarker，但是看看当我缩小:

那个有 7 个点的聚类标记在那里做什么？

这是我的代码:

public class MapaViagem extends FragmentActivity implements ClusterManager.OnClusterClickListener<MyItem>, ClusterManager.OnClusterItemClickListener<MyItem> {

    private GoogleMap googleMap;
    private String rm_IdViagem;
    private List<ClienteModel> mClienteModel = new ArrayList<ClienteModel>();
    private List<EnderecoModel> mEnderecoModel = new ArrayList<EnderecoModel>();
    private ArrayList<LatLng> coordList = new ArrayList<LatLng>();
    private  ArrayList<String> nomes = new ArrayList<String>();
    private ViagemModel mViagemModel = new ViagemModel();
    private ClusterManager<MyItem> mClusterManager;
    private ProgressDialog dialog;


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


        setContentView(R.layout.maps);





        try {

            Bundle parametros = getIntent().getExtras();
            rm_IdViagem = parametros.getString("id_viagem");

            Repositorio ca = new Repositorio(this);
            mViagemModel = ca.getViagemPorId(Integer.valueOf(rm_IdViagem));

            Repositorio cl = new Repositorio(this);
            mClienteModel = cl.getClientesViagem(Integer.valueOf(rm_IdViagem));


            String waypoints = "waypoints=optimize:true";
            String coordenadas = "";

            if(mClienteModel != null) {


                for (int i = 0; i < mClienteModel.size(); i++) {


                    Repositorio mRepositorio = new Repositorio(this);
                    mEnderecoModel = mRepositorio.getListaEnderecosDoCliente(Integer.valueOf(mClienteModel.get(i).getClientes_id()));

                    for (int j = 0; j < mEnderecoModel.size(); j++) {

                        // Loading map
                        initilizeMap();
                        // Changing map type
                        googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
                        // googleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
                        // googleMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
                        // googleMap.setMapType(GoogleMap.MAP_TYPE_TERRAIN);
                        // googleMap.setMapType(GoogleMap.MAP_TYPE_NONE);

                        // Showing / hiding your current location
                        googleMap.setMyLocationEnabled(true);

                        // Enable / Disable zooming controls
                        googleMap.getUiSettings().setZoomControlsEnabled(true);

                        // Enable / Disable my location button
                        googleMap.getUiSettings().setMyLocationButtonEnabled(true);

                        // Enable / Disable Compass icon
                        googleMap.getUiSettings().setCompassEnabled(true);

                        // Enable / Disable Rotate gesture
                        googleMap.getUiSettings().setRotateGesturesEnabled(true);

                        // Enable / Disable zooming functionality
                        googleMap.getUiSettings().setZoomGesturesEnabled(true);


                         float latitude = Float.parseFloat(mEnderecoModel.get(j).getLatitude());
                         float longitude = Float.parseFloat(mEnderecoModel.get(j).getLongitude());


                        coordenadas += "|" + latitude + "," + longitude;


                        nomes.add(mClienteModel.get(i).getNome());


                        coordList.add(new LatLng(latitude, longitude));




                        mClusterManager = new ClusterManager<MyItem>(MapaViagem.this, googleMap);


                        mClusterManager.setRenderer(new MyClusterRenderer(MapaViagem.this, googleMap, mClusterManager));
                        addItems(coordList, nomes);

                        googleMap.setOnCameraChangeListener(mClusterManager);
                        googleMap.setOnMarkerClickListener(mClusterManager);


                        mClusterManager.setOnClusterClickListener(this);

                        mClusterManager.setOnClusterItemClickListener(this);








                        mClusterManager.cluster();

                        googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(latitude, longitude), 5));


                    }


                }

                            String sensor = "sensor=false";
                            String params = waypoints + coordenadas + "&" + sensor;
                            String output = "json";
                            String url = "https://maps.googleapis.com/maps/api/directions/" + output + "?" + params;
                            ReadTask downloadTask = new ReadTask();
                            downloadTask.execute(url);
            }


        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    public class MyClusterRenderer extends DefaultClusterRenderer<MyItem> {

        public MyClusterRenderer(Context context, GoogleMap map,
                                 ClusterManager<MyItem> clusterManager) {
            super(context, map, clusterManager);
        }

        @Override
        protected void onBeforeClusterItemRendered(MyItem item, MarkerOptions markerOptions) {
            super.onBeforeClusterItemRendered(item, markerOptions);

            markerOptions.title(String.valueOf(item.getName()));
        }

        @Override
        protected void onClusterItemRendered(MyItem clusterItem, Marker marker) {
            super.onClusterItemRendered(clusterItem, marker);



            //here you have access to the marker itself
        }

        @Override
        protected boolean shouldRenderAsCluster(Cluster<MyItem> cluster) {
            return cluster.getSize() > 1;
        }



    }
}

Answer 1

这段代码似乎有问题:

coordenadas += "|" + latitude + "," + longitude; nomes.add(mClienteModel.get(i).getNome()); 
coordList.add(new LatLng(latitude, longitude)); 
mClusterManager = new ClusterManager<MyItem>(MapaViagem.this, googleMap); 
mClusterManager.setRenderer(new MyClusterRenderer(MapaViagem.this, googleMap, mClusterManager)); 
addItems(coordList, nomes);

你应该在里面添加这两件事:

getMap().setOnCameraChangeListener(mClusterManager);

和

private void addItems() {

    // Set some lat/lng coordinates to start with.
    double lat = 51.5145160;
    double lng = -0.1270060;

    // Add ten cluster items in close proximity, for purposes of this example.
    for (int i = 0; i < 10; i++) {
        double offset = i / 60d;
        lat = lat + offset;
        lng = lng + offset;
        MyItem offsetItem = new MyItem(lat, lng);
        mClusterManager.addItem(offsetItem);
    }

这是文档中的示例:https://developers.google.com/maps/documentation/android/utility/marker-clustering#simple