Android getting exact scroll position in ListView

Question

I\'d like to get the exact, pixel position of the ListView scroll. And no, I am not referring to the first visible position.

Is there a way to achieve this?

Answer 1

in addition to @jaredpetker answer. ListView is not holding all the items in its scroll, so u need to operate only "visible" part of list. When you scroll down top items are shifted out and pushed as new item views. Thats how convertedView is came from (it's not empty item to fill, it's shifted item that is out of "visible" part of list. So u need to know how many items was before visible part multiply them with ListItemHeight and add headerHeight, thes how you can get real absolute offset in scroll. If u got not header, position 0 will be listItem, so you can simplify absoluteY += pos*listItemHeight;

public class CustomListView extends ListView {

private int listItemHeight = 140;
private int headerHeight = 200;

public CustomListView(Context context) {
    super(context);
}

public CustomListView(Context context, AttributeSet attrs) {
    super(context, attrs);
}

public CustomListView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}

@Override
public int computeVerticalScrollOffset() {
    final int y = super.computeVerticalScrollOffset();
    int absoluteY = y;
    int pos = getFirstVisiblePosition();
    if(pos > 0){ 
       absoluteY += (pos-1)*listItemHeight+header‌​Height;
    }
    //use absoluteY
    return y;
}