We cannot use Overlay Actions in Map Views.
But we can use a KMZ file as the “Optional Url for KML File” with an Image and an URL in it.
You see this Info Button
This is an image in the KMZ file. I also added an URL to another part in my App.
Of course you can add any other URL.
Sadly it will always open in a new window as explained here.
I know this is very raw, but I wanted to throw it out