Android: Difference between getCount() and getChildCount() in ListView

Question

What is difference between getCount() and getChildCount() in ListView?

Bedim

Answer 1

getCount() returns you a count of items in Adapter (total in list), getChildCount() is a ViewGroup method that returns you number of subviews. ListView actively reuses views so if your list has 1000 items getCount() will return 1000, getChildCount() - around 10 or so...

Municipalize

up vote for this answer, for I've been stupid enough to do listview.getChildAt(getCount() -1) and get null pointer exception. – Ostensive

Answer 2

getCount() is the number of items in the adapter while getChildCount() refers to the ViewGroup's method that returns the number of the views that this view contains.

Plowman

Answer 3

In your adapter there is one Method getChildrenCount();that decide how many child you want to create.

  @Override
    public int getChildrenCount(int groupPosition) {
        return 1;
    }

Guttersnipe