Android中的谷歌地图标记集群

在Android应用程序中，有没有为谷歌地图实现标记集群的通用方法

                MapView mMapView;
                private GoogleMap googleMap;
                ClusterManager<MyItem> mClusterManager;


                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                        mMapView = (MapView) v.findViewById(R.id.mapView);
                        mMapView.onCreate(savedInstanceState);

                        mMapView.onResume();// needed to get the map to display immediately

                        try {
                            MapsInitializer.initialize(getActivity().getApplicationContext());
                        } catch (Exception e) {
                            e.printStackTrace();
                        }

                       googleMap = mMapView.getMap();

                       //below code use in onPost() of Asynctask
                       googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(currentlat,currentlng), 15));

                                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                                        googleMap.setOnCameraChangeListener(mClusterManager);
                                        googleMap.setOnMarkerClickListener(mClusterManager);
                                        CustomRenderer customRenderer = new CustomRenderer(getActivity(), googleMap, mClusterManager);                          
                                         mClusterManager.setRenderer(customRenderer);


                                for(int i=0;i<jarray.length();i++)
                                {

                                    JSONObject jobj_root=jarray.getJSONObject(i);
                                    JSONObject j_j_record=jobj_root.getJSONObject("Record");
                                    lat=j_j_record.getDouble("latitude");
                                    lng=j_j_record.getDouble("longitude");

                                     Location loc1 = new Location("");
                                    loc1.setLatitude(temp_lat);
                                    loc1.setLongitude(temp_lng);

                                    Location loc2 = new Location("");
                                    loc2.setLatitude(lat);
                                    loc2.setLongitude(lng);

                                    float distanceInMeters = loc1.distanceTo(loc2);
                                    if(distanceInMeters<2000)
                                    {
                                        //Toast.makeText(getActivity(), " kresp="+distanceInMeters, 34).show();
                                         MyItem offsetItem = new MyItem(lat,lng);
                                            mClusterManager.addItem(offsetItem);
                                    }

                                }

我有一个大约10000个位置的数据库，我希望以更智能的方式显示它们，而不仅仅是在一个很少比火柴盒大的显示器上倾倒数千个标记。。。

---

理想情况下，应该可以从网站URL检索标记，尽管我不确定从可用性的角度来看，使用通常的异步函数是否有意义

我使用了这个解决方案，它对我非常有效，我希望它能有所帮助

                MapView mMapView;
                private GoogleMap googleMap;
                ClusterManager<MyItem> mClusterManager;


                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                        mMapView = (MapView) v.findViewById(R.id.mapView);
                        mMapView.onCreate(savedInstanceState);

                        mMapView.onResume();// needed to get the map to display immediately

                        try {
                            MapsInitializer.initialize(getActivity().getApplicationContext());
                        } catch (Exception e) {
                            e.printStackTrace();
                        }

                       googleMap = mMapView.getMap();

                       //below code use in onPost() of Asynctask
                       googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(currentlat,currentlng), 15));

                                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                                        googleMap.setOnCameraChangeListener(mClusterManager);
                                        googleMap.setOnMarkerClickListener(mClusterManager);
                                        CustomRenderer customRenderer = new CustomRenderer(getActivity(), googleMap, mClusterManager);                          
                                         mClusterManager.setRenderer(customRenderer);


                                for(int i=0;i<jarray.length();i++)
                                {

                                    JSONObject jobj_root=jarray.getJSONObject(i);
                                    JSONObject j_j_record=jobj_root.getJSONObject("Record");
                                    lat=j_j_record.getDouble("latitude");
                                    lng=j_j_record.getDouble("longitude");

                                     Location loc1 = new Location("");
                                    loc1.setLatitude(temp_lat);
                                    loc1.setLongitude(temp_lng);

                                    Location loc2 = new Location("");
                                    loc2.setLatitude(lat);
                                    loc2.setLongitude(lng);

                                    float distanceInMeters = loc1.distanceTo(loc2);
                                    if(distanceInMeters<2000)
                                    {
                                        //Toast.makeText(getActivity(), " kresp="+distanceInMeters, 34).show();
                                         MyItem offsetItem = new MyItem(lat,lng);
                                            mClusterManager.addItem(offsetItem);
                                    }

                                }

---

我使用了这个解决方案，它对我非常有效，我希望它能有所帮助

                MapView mMapView;
                private GoogleMap googleMap;
                ClusterManager<MyItem> mClusterManager;


                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                        mMapView = (MapView) v.findViewById(R.id.mapView);
                        mMapView.onCreate(savedInstanceState);

                        mMapView.onResume();// needed to get the map to display immediately

                        try {
                            MapsInitializer.initialize(getActivity().getApplicationContext());
                        } catch (Exception e) {
                            e.printStackTrace();
                        }

                       googleMap = mMapView.getMap();

                       //below code use in onPost() of Asynctask
                       googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(currentlat,currentlng), 15));

                                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                                        googleMap.setOnCameraChangeListener(mClusterManager);
                                        googleMap.setOnMarkerClickListener(mClusterManager);
                                        CustomRenderer customRenderer = new CustomRenderer(getActivity(), googleMap, mClusterManager);                          
                                         mClusterManager.setRenderer(customRenderer);


                                for(int i=0;i<jarray.length();i++)
                                {

                                    JSONObject jobj_root=jarray.getJSONObject(i);
                                    JSONObject j_j_record=jobj_root.getJSONObject("Record");
                                    lat=j_j_record.getDouble("latitude");
                                    lng=j_j_record.getDouble("longitude");

                                     Location loc1 = new Location("");
                                    loc1.setLatitude(temp_lat);
                                    loc1.setLongitude(temp_lng);

                                    Location loc2 = new Location("");
                                    loc2.setLatitude(lat);
                                    loc2.setLongitude(lng);

                                    float distanceInMeters = loc1.distanceTo(loc2);
                                    if(distanceInMeters<2000)
                                    {
                                        //Toast.makeText(getActivity(), " kresp="+distanceInMeters, 34).show();
                                         MyItem offsetItem = new MyItem(lat,lng);
                                            mClusterManager.addItem(offsetItem);
                                    }

                                }

会对你有用的。示例应用程序中高级模式下的选项之一是在全球范围内聚集10000个随机点。集群是在后台线程上完成的，因此即使在较旧的设备上也能正常工作。使其在大数据集上运行的关键是将“扩展边界因子（overdraw）”设置为0。它在我的银河系连接上飞行。

对你有用。示例应用程序中高级模式下的选项之一是在全球范围内聚集10000个随机点。集群是在后台线程上完成的，因此即使在较旧的设备上也能正常工作。使其在大数据集上运行的关键是将“扩展边界因子（overdraw）”设置为0。它在我的Galaxy Nexus上飞行。

下面的代码为我工作：

                MapView mMapView;
                private GoogleMap googleMap;
                ClusterManager<MyItem> mClusterManager;


                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                        mMapView = (MapView) v.findViewById(R.id.mapView);
                        mMapView.onCreate(savedInstanceState);

                        mMapView.onResume();// needed to get the map to display immediately

                        try {
                            MapsInitializer.initialize(getActivity().getApplicationContext());
                        } catch (Exception e) {
                            e.printStackTrace();
                        }

                       googleMap = mMapView.getMap();

                       //below code use in onPost() of Asynctask
                       googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(currentlat,currentlng), 15));

                                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                                        googleMap.setOnCameraChangeListener(mClusterManager);
                                        googleMap.setOnMarkerClickListener(mClusterManager);
                                        CustomRenderer customRenderer = new CustomRenderer(getActivity(), googleMap, mClusterManager);                          
                                         mClusterManager.setRenderer(customRenderer);


                                for(int i=0;i<jarray.length();i++)
                                {

                                    JSONObject jobj_root=jarray.getJSONObject(i);
                                    JSONObject j_j_record=jobj_root.getJSONObject("Record");
                                    lat=j_j_record.getDouble("latitude");
                                    lng=j_j_record.getDouble("longitude");

                                     Location loc1 = new Location("");
                                    loc1.setLatitude(temp_lat);
                                    loc1.setLongitude(temp_lng);

                                    Location loc2 = new Location("");
                                    loc2.setLatitude(lat);
                                    loc2.setLongitude(lng);

                                    float distanceInMeters = loc1.distanceTo(loc2);
                                    if(distanceInMeters<2000)
                                    {
                                        //Toast.makeText(getActivity(), " kresp="+distanceInMeters, 34).show();
                                         MyItem offsetItem = new MyItem(lat,lng);
                                            mClusterManager.addItem(offsetItem);
                                    }

                                }

主类

                MapView mMapView;
                private GoogleMap googleMap;
                ClusterManager<MyItem> mClusterManager;


                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                        mMapView = (MapView) v.findViewById(R.id.mapView);
                        mMapView.onCreate(savedInstanceState);

                        mMapView.onResume();// needed to get the map to display immediately

                        try {
                            MapsInitializer.initialize(getActivity().getApplicationContext());
                        } catch (Exception e) {
                            e.printStackTrace();
                        }

                       googleMap = mMapView.getMap();

                       //below code use in onPost() of Asynctask
                       googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(currentlat,currentlng), 15));

                                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                                        googleMap.setOnCameraChangeListener(mClusterManager);
                                        googleMap.setOnMarkerClickListener(mClusterManager);
                                        CustomRenderer customRenderer = new CustomRenderer(getActivity(), googleMap, mClusterManager);                          
                                         mClusterManager.setRenderer(customRenderer);


                                for(int i=0;i<jarray.length();i++)
                                {

                                    JSONObject jobj_root=jarray.getJSONObject(i);
                                    JSONObject j_j_record=jobj_root.getJSONObject("Record");
                                    lat=j_j_record.getDouble("latitude");
                                    lng=j_j_record.getDouble("longitude");

                                     Location loc1 = new Location("");
                                    loc1.setLatitude(temp_lat);
                                    loc1.setLongitude(temp_lng);

                                    Location loc2 = new Location("");
                                    loc2.setLatitude(lat);
                                    loc2.setLongitude(lng);

                                    float distanceInMeters = loc1.distanceTo(loc2);
                                    if(distanceInMeters<2000)
                                    {
                                        //Toast.makeText(getActivity(), " kresp="+distanceInMeters, 34).show();
                                         MyItem offsetItem = new MyItem(lat,lng);
                                            mClusterManager.addItem(offsetItem);
                                    }

                                }

以下代码适用于我：

                MapView mMapView;
                private GoogleMap googleMap;
                ClusterManager<MyItem> mClusterManager;


                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                        mMapView = (MapView) v.findViewById(R.id.mapView);
                        mMapView.onCreate(savedInstanceState);

                        mMapView.onResume();// needed to get the map to display immediately

                        try {
                            MapsInitializer.initialize(getActivity().getApplicationContext());
                        } catch (Exception e) {
                            e.printStackTrace();
                        }

                       googleMap = mMapView.getMap();

                       //below code use in onPost() of Asynctask
                       googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(currentlat,currentlng), 15));

                                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                                        googleMap.setOnCameraChangeListener(mClusterManager);
                                        googleMap.setOnMarkerClickListener(mClusterManager);
                                        CustomRenderer customRenderer = new CustomRenderer(getActivity(), googleMap, mClusterManager);                          
                                         mClusterManager.setRenderer(customRenderer);


                                for(int i=0;i<jarray.length();i++)
                                {

                                    JSONObject jobj_root=jarray.getJSONObject(i);
                                    JSONObject j_j_record=jobj_root.getJSONObject("Record");
                                    lat=j_j_record.getDouble("latitude");
                                    lng=j_j_record.getDouble("longitude");

                                     Location loc1 = new Location("");
                                    loc1.setLatitude(temp_lat);
                                    loc1.setLongitude(temp_lng);

                                    Location loc2 = new Location("");
                                    loc2.setLatitude(lat);
                                    loc2.setLongitude(lng);

                                    float distanceInMeters = loc1.distanceTo(loc2);
                                    if(distanceInMeters<2000)
                                    {
                                        //Toast.makeText(getActivity(), " kresp="+distanceInMeters, 34).show();
                                         MyItem offsetItem = new MyItem(lat,lng);
                                            mClusterManager.addItem(offsetItem);
                                    }

                                }

主类

                MapView mMapView;
                private GoogleMap googleMap;
                ClusterManager<MyItem> mClusterManager;


                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                        mMapView = (MapView) v.findViewById(R.id.mapView);
                        mMapView.onCreate(savedInstanceState);

                        mMapView.onResume();// needed to get the map to display immediately

                        try {
                            MapsInitializer.initialize(getActivity().getApplicationContext());
                        } catch (Exception e) {
                            e.printStackTrace();
                        }

                       googleMap = mMapView.getMap();

                       //below code use in onPost() of Asynctask
                       googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(currentlat,currentlng), 15));

                                        mClusterManager = new ClusterManager<MyItem>(getActivity(), googleMap);

                                        googleMap.setOnCameraChangeListener(mClusterManager);
                                        googleMap.setOnMarkerClickListener(mClusterManager);
                                        CustomRenderer customRenderer = new CustomRenderer(getActivity(), googleMap, mClusterManager);                          
                                         mClusterManager.setRenderer(customRenderer);


                                for(int i=0;i<jarray.length();i++)
                                {

                                    JSONObject jobj_root=jarray.getJSONObject(i);
                                    JSONObject j_j_record=jobj_root.getJSONObject("Record");
                                    lat=j_j_record.getDouble("latitude");
                                    lng=j_j_record.getDouble("longitude");

                                     Location loc1 = new Location("");
                                    loc1.setLatitude(temp_lat);
                                    loc1.setLongitude(temp_lng);

                                    Location loc2 = new Location("");
                                    loc2.setLatitude(lat);
                                    loc2.setLongitude(lng);

                                    float distanceInMeters = loc1.distanceTo(loc2);
                                    if(distanceInMeters<2000)
                                    {
                                        //Toast.makeText(getActivity(), " kresp="+distanceInMeters, 34).show();
                                         MyItem offsetItem = new MyItem(lat,lng);
                                            mClusterManager.addItem(offsetItem);
                                    }

                                }