I need to display an additional info for a marker when it's clicked. I expected to find a way how to display a popup window (like a tooltip) with a short description on marker click, but failed.
I use MapMarker class for my markers because I need custom icons.
The MapMarker and MapStandardMarker classes do not have the functionality I need.

As I understand, I need something like "Android MapView Balloons" https://github.com/jgilfelt/android-apviewballoons