enter code here
我需要在Google Map上显示标记的集群。
我有自定义对象:
public class PostClusterItem implements ClusterItem {
private final LatLng mPosition;
BitmapDescriptor icon;
String title;
String desc;
}
我想将其传递给ClusterManager。
我从服务器收到一组对象,并在回调中将它们全部解析:
@Override
public void onAllPostsLoaded(List<Post> postList) {
mClusterManager = new ClusterManager<PostClusterItem>(getActivity(), googleMap);
mClusterManager.clearItems();
googleMap.setOnCameraChangeListener(mClusterManager);
googleMap.setOnMarkerClickListener(mClusterManager);
for (Post post : postList) {
addMarkers(post);
}
mClusterManager.setRenderer(new CustomClusterRenderer(getActivity(), googleMap, mClusterManager));
}
我的
addMarkers
方法: private void addMarkers(Post post) {
PostClusterItem postClusterItem = new PostClusterItem(post.getLat(), post.getLng(), post.getTitle(), post.getDescription());
mClusterManager.addItem(postClusterItem);
}
但我不知道原因,clusterManager的工作情况很差:
标记未正确添加到集群中,我可以得到下一种情况:
但是当我对一些简单对象进行测试时,这种情况不存在:
public class MyItem implements ClusterItem {
private final LatLng mPosition;
public MyItem(double lat, double lng) {
mPosition = new LatLng(lat, lng);
}
}
这可能是什么原因?
这是我的
CustomClusterRenderer
public class CustomClusterRenderer extends DefaultClusterRenderer<PostClusterItem> {
public CustomClusterRenderer(Context context, GoogleMap map,
ClusterManager<PostClusterItem> clusterManager) {
super(context, map, clusterManager);
}
protected void onBeforeClusterItemRendered(PostClusterItem item, MarkerOptions markerOptions) {
super.onBeforeClusterItemRendered(item, markerOptions);
markerOptions.snippet(item.getDesc());
markerOptions.title(item.getTitle());
}
}
最佳答案
也许为时已晚,但总是打电话
mClusterManager.cluster();
添加项目后。
这是此处的ClusterManager的源代码:
https://github.com/googlemaps/android-maps-utils/blob/master/library/src/com/google/maps/android/clustering/ClusterManager.java
这里是一些解释:
/**
* Force a re-cluster. You may want to call this after adding new item(s).
*/
public void cluster() {
...