我实施了一个选项,可以从实际位置找到最近的标记。我在ClusterItem中拥有自定义InfoWindow的所有标记。在没有群集的普通谷歌地图上,我可以使用marker.showInfoWindow();
并弹出InfoWindow。在使用聚类时似乎没有这样的方法,因为标记不会被添加为正确的地图标记。
我的代码:
public class StationsFragment extends Fragment implements OnMapReadyCallback {
private static GoogleMap googleMap;
private ClusterManager<MyItem> clusterManager;
private MyItem clickedClusterItem;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.main_activity, container, false);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Utils.changeLanguage(getActivity());
final SupportMapFragment map = (SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map);
map.getMapAsync(this);
}
@Override
public void onMapReady(final GoogleMap map) {
googleMap = map;
map.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(0.0, 0.0), 10));
map.setMyLocationEnabled(true);
clusterManager = new ClusterManager<>(getActivity(), map);
map.setOnCameraChangeListener(clusterManager);
map.setOnMarkerClickListener(clusterManager);
map.setInfoWindowAdapter(clusterManager.getMarkerManager());
clusterManager.setOnClusterItemClickListener(new ClusterManager.OnClusterItemClickListener<MyItem>() {
@Override
public boolean onClusterItemClick(MyItem item) {
clickedClusterItem = item;
return false;
}
});
loadMarkers();
}
private void loadMarkers() {
clusterManager.addItem(new MyItem(lat, lng, title, snippet));
}
public class ItemAdapter implements GoogleMap.InfoWindowAdapter {
private final View view;
ItemAdapter() {
view = getActivity().getLayoutInflater().inflate(R.layout.info_window, null);
}
@Override
public View getInfoWindow(Marker marker) {
TextView title = (TextView) view.findViewById(R.id.info_title);
title.setText(clickedClusterItem.getTitle());
TextView snippet = (TextView) view.findViewById(R.id.info_snippet);
snippet.setText(clickedClusterItem.getSnippet());
return view;
}
@Override
public View getInfoContents(Marker marker) {
return null;
}
}
public class MyItem implements ClusterItem {
private final LatLng position;
private final String title;
private final String snippet;
public MyItem(double lat, double lng, String title, String snippet) {
this.position = new LatLng(lat, lng);
this.title = title;
this.snippet = snippet;
}
@Override
public LatLng getPosition() {
return position;
}
public String getTitle(){
return title;
}
public String getSnippet(){
return snippet;
}
}
}
答案 0 :(得分:2)
看来你没有ClusterManager的clusterManager.cluster()方法 一旦标记项添加到clusterManager
,您需要添加调用此方法进行群集自定义,请参见下面的代码:
private class CustomMapClusterRenderer<T extends ClusterItem> extends DefaultClusterRenderer<T> {
CustomMapClusterRenderer(Context context, GoogleMap map, ClusterManager<T> clusterManager) {
super(context, map, clusterManager);
}
@Override
protected boolean shouldRenderAsCluster(Cluster<T> cluster) {
//start clustering if 2 or more items overlap
return cluster.getSize() >= Constants.MINIMUM_CLUSTER_SIZE;
}
@Override
protected void onBeforeClusterItemRendered(T item,
MarkerOptions markerOptions) {
ClusterMarkerItem markerItem = (ClusterMarkerItem) item;
markerOptions.icon(markerItem.getmBitmapDescriptor());
}
@Override
protected void onBeforeClusterRendered(Cluster<T> cluster, MarkerOptions markerOptions) {
// for dynamically change custom map markericon
BitmapDescriptor descriptor = BitmapDescriptorFactory.fromResource(R.drawable.pin_cluster);
markerOptions.icon(descriptor);
}
@Override
protected void onClusterRendered(Cluster<T> cluster, Marker marker) {
super.onClusterRendered(cluster, marker);
//add infowindow to cluster icon
marker.setTitle("count");
marker.setSnippet("Total Count - " + cluster.getItems().size());
}
}
答案 1 :(得分:1)
您可以通过覆盖渲染器:
在群集项目上显示信息窗口override fun onClusterItemRendered(clusterItem: MarkerItem?, marker: Marker?) {
super.onClusterItemRendered(clusterItem, marker)
getMarker(clusterItem).showInfoWindow()
}
请检查,这将逐个显示infoWindow,只有最后一个项目窗口可见