No animation when expanding

[captainbupt]

Hi, I'm suffering some problem with animation. When I call collapseGroupWithAnimation, the animation works well. But when I call expandGroupWithAnimation, the listview just expand immediately, without any animation.

I have downloaded the example and it works well. I also compared my code carefully with the example and still don't understand how could this happened.

Do you have any idea about how this could happens? Thanks a lot, really need helps!

[gitanshu]

Is the item not expanding the last item in your list?

[jimmytrivedizivame]

@captainbupt & @gitanshu This is happening, if you have only single parent in your list.