Android Google 地图 Api 在放大时不会取消聚类

Question

我创建了 Custom Cluster Render 扩展 DefaultClusterRenderer<T>，同时使用 Google Maps Api 和 android maps utils。根据以下指南 https://github.com/googlemaps/android-maps-utils/blob/master/demo/src/com/google/maps/android/utils/demo/CustomMarkerClusteringDemoActivity.java

当我在同一区域有太多 markers 时，它们会聚集在一起。但是在缩放时不要分离到 markers，我可以看到

http://cs627121.vk.me/v627121202/51eb5/rY9f4p8ivos.jpg

这是一些代码：

 public PlaceRender(Context context, GoogleMap map, ClusterManager<MyCluster> clusterManager) {
    super(context, map, clusterManager);
    mIconGenerator = new IconGenerator(context);
    imageView = new ImageView(context);
    mClusterImageView = new ImageView(context);
    mIconGenerator.setContentView(imageView);
    this.context = context;
    this.map = map;
    this.myClusterManager = clusterManager;
}

@Override
protected void onBeforeClusterItemRendered(MyCluster cluster, MarkerOptions markerOptions) {
    super.onBeforeClusterItemRendered(cluster, markerOptions);
    markerOptions.title(cluster.name).snippet(cluster.snippet);
    markerOptions.infoWindowAnchor(0.5f, 0.0f);


}

@Override
protected void onBeforeClusterRendered(Cluster<MyCluster> cluster, MarkerOptions markerOptions) {
    super.onBeforeClusterRendered(cluster, markerOptions);
}

@Override
protected boolean shouldRenderAsCluster(Cluster cluster) {
    // Always render clusters.
    return cluster.getSize() > 1;
}

@Override
protected void onClusterRendered(Cluster<MyCluster> cluster, Marker marker){
    super.onClusterRendered(cluster, marker);
}


@Override
protected void onClusterItemRendered(MyCluster geo, Marker marker) {
    super.onClusterItemRendered(geo, marker);
    loadIconFromApi(geo, marker);
}


public void addItems(List<MyCluster> clusters, Context context, GoogleMap map) {
    myClusterManager = new ClusterManager<>(context, map);
    map.setOnMarkerClickListener(this);

    for (int i = 0; i < clusters.size(); i++) {
        myClusterManager.addItem(clusters.get(i));
        myClusterManager.setRenderer(new PlaceRender(context, map, myClusterManager));

    }
    myClusterManager.cluster();

}

//
private void loadIconFromApi(MyCluster geo, Marker marker) {
    PicassoMarker markers = new PicassoMarker(marker, mIconGenerator, imageView);
    geo.setPicassoMarker(markers);
    Picasso.with(context).load(geo.image).into(markers);
}

@Override
public boolean onMarkerClick(Marker marker) {
    marker.showInfoWindow();
    return true;
}

如果我使用 15x camera zoom，那么我可以看到每个标记，然后 zoom out，我的标记将不会合并到 cluster。

我错过了什么？

Answer 1

由于您设置的条件，您的 shouldRenderAsCluster() 始终在聚类。

cluster.getSize() > 1;

您可以在 here

上查看类似的 SO post

此外，请尝试查看此 post。发现您正在使用 PicassoMarker 库，这可能也影响了您的集群渲染。

Answer 2

我需要添加这个函数并在 onCameraChange

中调用它

public void updateUI(List<MyCluster> clusters) {
        myClusterManager.clearItems();

        for (int i = 0; i < clusters.size(); i++) {
            myClusterManager.addItem(clusters.get(i));
         //   myClusterManager.setRenderer(new PlaceRender(context, map, myClusterManager));

    }
    myClusterManager.onCameraChange(map.getCameraPosition());
}

Android Google 地图 Api 在放大时不会取消聚类

Android Google maps Api doesn't uncluster while zoom in

java

android

google-maps

google-maps-api-2

markerclusterer