问如何使用安卓地图实用程序库显示InfoWindow

EN

class MyItem implements ClusterItem {

    private LatLng mPosition;
    private String mTitle;

    public MyItem(LatLng position){
        mPosition = position;
    }

    @Override
    public LatLng getPosition() {
        return mPosition;
    }

    public String getTitle() {
        return mTitle;
    }

    public void setTitle(String title) {
        mTitle = title;
    }
}

class MyClusterRenderer extends DefaultClusterRenderer<MyItem> {

    public MyClusterRenderer(Context context, GoogleMap map,
            ClusterManager<MyItem> clusterManager) {
        super(context, map, clusterManager);
    }

    @Override
    protected void onBeforeClusterItemRendered(MyItem item, MarkerOptions markerOptions) {
        super.onBeforeClusterItemRendered(item, markerOptions);

        markerOptions.title(item.getTitle());
    }

    @Override
    protected void onClusterItemRendered(MyItem clusterItem, Marker marker) {
        super.onClusterItemRendered(clusterItem, marker);

        //here you have access to the marker itself
    }
}

ClusterManager<MyItem> clusterManager = new ClusterManager<MyItem>(this, getMap());
clusterManager.setRenderer(new MyClusterRenderer(this, getMap() ,clusterManager));