在回答：

现在的问题是：我如何确定哪些实体点击标记标记重presents？   [...]   还有一个marker.getId（），但这样的ID是由API产生的，我无法控制它。

The question is: How do I identify what entity the clicked Marker 'marker' represents? [...] There's also a marker.getId(), but such ID is generated by the API and I can't control it

您可以控制​​它。该标志是由addMarker（）返回，这样你就可以得到它的ID和存储。这里的code：

You can control it. The marker is returned by addMarker(), so you can get its ID and store it. Here's the code:

HashMap <String, Integer> mMarkers = new HashMap<String, Integer>();

...

MarkerOptions mo = new MarkerOptions()
.icon(BitmapDescriptorFactory.fromResource(R.drawable.my_marker))
.position(new LatLng(mLat, mLon))
.flat(true) 
.snippet("Click here for details")
.rotation(0)
.title(title);

在您的标记添加到地图，存储其ID在容器上

When you add the marker to the map, store its ID on the container

Marker mkr = map.addMarker(mo);
mMarkers.put(mkr.getId(), myObject.getId()); 

然后点击标记时，就可以恢复myObject的的id是这样

Then when the marker is clicked, you can recover the id of "myObject" like this

map.setOnInfoWindowClickListener(new OnInfoWindowClickListener() {
    public void onInfoWindowClick(Marker marker) {
        int id = mMarkers.get(marker.getId());
        // Do stuff with the id                         
    }
});