我试图用服务器中的新数据更新我的地图,但我无法弄清楚如何从地图中删除旧项目(标记和集群 – 使用ClusterManager)( – 在我看来,我只能在ClusterManager中添加.
我有BroadcastReceiver,当有新数据时它会获得意图.我正在尝试这样的事情:(但它在“… getMarkers().clear();”上给了我UnsupportedOperationException.“
private BroadcastReceiver myRefrestMapBroadcastReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context,Intent intent) { Log.d(TAG,"onReceive"); mClusterManager.clearItems(); mClusterManager.getMarkerCollection().getMarkers().clear(); mClusterManager.getClusterMarkerCollection().getMarkers().clear(); mClusterManager.addItems(LocationGetter.getReports()); } };
我添加的数据仅用于此功能.
java.util.Collection<Marker> userCollection = mClusterManager.getMarkerCollection().getMarkers(); ArrayList<Marker> userList = new ArrayList<Marker>(userCollection); // now is userList empty for(Marker marker: userList){ marker.remove(); } java.util.Collection<Marker> userCollection2 = mClusterManager.getClusterMarkerCollection().getMarkers(); ArrayList<Marker> userList2 = new ArrayList<Marker>(userCollection2); // now is userList2 empty for(Marker marker: userList2){ marker.remove(); } mClusterManager.addItems(LocationGetter.getReports());
解决方法
根据ClusterManager
documentation,我们可以使用mClusterManager.cluster();
This method Force a re-cluster. You may want to call this after adding new item(s).
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。