在每个itemView上调用onItemClick而不是相同的rootView

I have a List View with items that i want to expand on a user tapping them, and eventually I got this to work. Sort of. The problem is that no matter which item is tapped, the topmost visible item expands, instead of the one that the user has selected. It seems as though I need to call I have a List View with items that i want to ex