Android Question GoogleMap Marker Click event

'define your map in sub globels
Private Markers1 As Map
'...later anywhere in your code create a marker and put it to the map as key   
Dim aMarker As Marker = GoogleMap1.AddMarker(lat1,lon1,"myTitle")
Markers1.Put(aMarker, "somevalues..or object.")

'later when you need the marker again and connect it to your information
aObject = Markers1.get(aMarker)

...
Dim InfoWindowAdapter1 As InfoWindowAdapter
InfoWindowAdapter1.Initialize("InfoWindowAdapter1")
GoogleMapsExtras1.SetInfoWindowAdapter(GoogleMap1, InfoWindowAdapter1)
...

Sub InfoWindowAdapter1_GetInfoWindow(Marker1 As Marker) As View
' the default InfoWindow will be used if this event Sub is not defined or if it returns Null
'do something with your marker
aObject = Markers1.get(Marker1)
...
'and show a transparent label on the map instead of the balloon
   Dim InfoWindowLabel As Label
   InfoWindowLabel.Initialize("")
   InfoWindowLabel.Color=Colors.Transparent
   InfoWindowLabel.TextColor=Colors.Transparent
   Return InfoWindowLabel
End Sub