You are probably making a mistake, but, from the docs:
indexToItemRenderer () method public function indexToItemRenderer(index:int <http://127.0.0.1:58469/help/topic/com.adobe.flexbuilder.help/langref/in t.html> ):IListItemRenderer <http://127.0.0.1:58469/help/topic/com.adobe.flexbuilder.help/langref/mx /controls/listClasses/IListItemRenderer.html> Get an item renderer for the index of an item in the data provider, if one exists. Since item renderers only exist for items within the set of viewable rows items, you cannot use this method for items that are not visible. Parameters index:int <http://127.0.0.1:58469/help/topic/com.adobe.flexbuilder.help/langref/in t.html> - The offset into the data provider for an item Returns IListItemRenderer <http://127.0.0.1:58469/help/topic/com.adobe.flexbuilder.help/langref/mx /controls/listClasses/IListItemRenderer.html> - The item renderer that is displaying the item, or null if the item is not currently displayed Tracy ________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Marcin Glowacki Sent: Monday, April 28, 2008 11:31 AM To: [email protected] Subject: [flexcoders] Re: How to get the reference to an item renderer given item index in dataProvide OK, thanks for your input. However, I would appreciate any hints on how I could write a method in MyDataGrid that will return reference to itemRenderer or itemEditor or null at any given point in time. If a given row is not displayed on the screen this method should return null, otherwise itemRenderer or itemEditor. protected function getItemRendererByPosition(dateProviderIndex:int, columnIndex:int):IDataRenderer { // go through all item renderers and return the one I need // where are the renderers stored? any protected member? // how can you tell current position of an item renderer? } --- In [email protected] <mailto:flexcoders%40yahoogroups.com> , "Tracy Spratt" <[EMAIL PROTECTED]> wrote: > > You cannot do that. > > > > Item renderers are recycled. Only the visible rows are > instantiated(plus a few buffers) So if row 5 is not visible, it does > not exist, and you cannot reference it. > > > > In almost all cases, work should be done on the underlying dataProvider. > > > > Search archives or google for: itemRenderer recycle > > > > Tracy > > > > ________________________________ > > From: [email protected] <mailto:flexcoders%40yahoogroups.com> [mailto:[email protected] <mailto:flexcoders%40yahoogroups.com> ] On > Behalf Of Marcin Glowacki > Sent: Sunday, April 27, 2008 3:21 PM > To: [email protected] <mailto:flexcoders%40yahoogroups.com> > Subject: [flexcoders] How to get the reference to an item renderer given > item index in dataProvider? > > > > In Flex 3 DataGrid, how to get the reference to item renderer given > item index in dataProvider and column number? > I am extending DataGrid, and I need to access it in MyDataGrid. > > Lets say I want itemRenderer for item in dataProvider at index 5 and > column 2. > > And > > how to get the array of all itemRenderers and/or itemEditor for a > given index of an item in dataProvider? >
