Hey i solved this listview problem...
take a label text 
and in designer
set both labeltext and scrollarang to fill parent
normal vertical arrangement is to fill the complet display (just need if you have different colors)
vertical scroll arrangment is to scroll
at least put there a label text
center the arrangments horrizontal
if you work in your blocks with a list picker than mybe is 
puts the newest entry always on top
anyway you have much more controll over srcollbar and you can change color fonttype etc...
no need to build 1hr with extension and canvas or so on.