android - Keep getting blank views when trying to grab a view from Listview -

i trying make card flip animation when item(card) clicked in google card list view animation https://github.com/nhaarman/listviewanimations

i working example google cards activity. , i'm trying make card flip when click this: http://bit.ly/1aareu7 problem view goes blank right after card flipped. want cards second item on listview(which position 1). accordind documentation here:http://bit.ly/1aareu7 how view cards supplied:

view rootlayout = //your root view; view cardface = //your desired card face; view cardback = //your desired card back;  flipanimation flipanimation = new flipanimation(cardface, cardback);          if (cardface.getvisibility() == view.gone) {             flipanimation.reverse();         }         rootlayout.startanimation(flipanimation); 

in case, card been flipped first item , want cards second items view on listview. when put these ↓ values in, card flips(with card face instead of specified card-back) , disappears leaving blank view behind.

here values supplied in cards face , back

view rootlayout = listview.getchildat(position); view cardface = listview.getchildat(position); view cardback = listview.getchildat(1); 

pls feed me ideas on how specified view , use in flip animation.

for detail, here full code activity.

activity: http://pastebin.com/ff1x72yt

xml: http://pastebin.com/mz5epjke

note:the listview not scrolllable(for testing purposes) , both first(0) , second item(1) used prototype visible.