Does DataGrid.indexToItemRenderer really work?

Question

Let's say I have a two column DataGrid. I want to get the
itemRenderer for the cell at the third row in the second column.
Shouldn't this work?:
var rendererIndex:int = dataGrid.indicesToIndex(2 1);
var renderer:IListItemRenderer =
dataGrid.indexToItemRenderer(rendererIndex);
It doesn't appear to be working, however. When I debug it, it
returns the itemRenderer for the cell at the thrid row, but for the
FIRST column. Why doesn't this do what you think it would?

Answer 1

Hello, was looking for the solution to a similar problem and I came up with a solution:
public function indexToItemRendererAtColumn(index:int, columnIndex:int = 0):IListItemRenderer
     var firstItemIndex:int = verticalScrollPosition - offscreenExtraRowsTop;
     if (index < firstItemIndex ||
            index >= firstItemIndex + listItems.length)
            return null;
        return listItems[index - firstItemIndex][columnIndex];
In my extended component of a DataGrid I added this method which uses most of the code from the indexToItemRenderer method of the ListBase class.  The original Adobe code explicitly uses the column at index 0, this simply uses the specified columnIndex to return the item renderer you desire.