ExpandableListView in Fragment

Hi,

i need an ExpandableListView in a Fragment, because i am using a ViewPager. I think a ExpandableListView in a Fragment is not simple to create. I found a solution on GitHub and want to Translate it to C#.

https://gist.github.com/mosabua/1316903

My question is: how can is substitute the Runnable() with the callbacks best in C#?

Any help is appreciated.

Kind regards, Hannes

EDIT: If there is a good alternative solution i am also glad to hear about it. My aim is a list in a Fragment (for the ViewPager), and I want every line to be another Fragment with different Elements, which can be expanded with an animation.