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https://issues.apache.org/jira/browse/FLEX-34345?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vadim Usoltsev updated FLEX-34345:
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Description:
Exception in *GridViewLayout.as:1053* occurs when data item is being changed by
item renderer. The code:
{code:actionscript}
for each (var renderer:IGridItemRenderer in visibleItemRenderers)
{
var rowIndex:int = renderer.rowIndex; ....
{code}
is not null safe, because visibleItemRenderers vector can contain null items
under some indices, made f.e. by code in *GridViewLayout.as:1753* :
{code:actionscript}
const renderer:IGridItemRenderer = visibleItemRenderers[index];
visibleItemRenderers[index] = null;
{code}
To reproduce this, create DataGrid with data provider, that contain items with
Date fields, and create an ItemRenderer for that column with DateField
component, that can change the date in source data item. Error will be throwed
when data item's field will be changed and *PropertyChangeEvent* will be
dispatched.
I think simple check for "null" will be enough to fix this bug.
was:
Exception in *GridViewLayout.as:1053* occurs when data item is being changed by
item renderer. The code:
{code:actionscript}
for each (var renderer:IGridItemRenderer in visibleItemRenderers)
{
var rowIndex:int = renderer.rowIndex; ....
{code}
is not null safe, because visibleItemRenderers vector can contain null items
under some indices, made f.e. by code in *GridViewLayout.as:1753* :
{code:actionscript}
const renderer:IGridItemRenderer = visibleItemRenderers[index];
visibleItemRenderers[index] = null;
{code}
To reproduce this, create DataGrid with data provider, that contain items with
Date fields, and create an ItemRenderer for that column with DateField
component, that can change the date in source data item. Error will be throwed
when data item's field will be changed and *PropertyChangeEvent* will be
dispatched.
I think simple check for "null" will fix this bug.
> Spark DataGrid throws a Null Pointer Exception when data provider's item is
> being changed by item renderer.
> -----------------------------------------------------------------------------------------------------------
>
> Key: FLEX-34345
> URL: https://issues.apache.org/jira/browse/FLEX-34345
> Project: Apache Flex
> Issue Type: Bug
> Components: Spark: DataGrid, Spark: Grid
> Affects Versions: Adobe Flex SDK 4.5.1 (Release), Apache Flex 4.11.0,
> Apache Flex 4.12.1
> Reporter: Vadim Usoltsev
> Labels: datagrid, grid, itemrenderer, npe
>
> Exception in *GridViewLayout.as:1053* occurs when data item is being changed
> by item renderer. The code:
> {code:actionscript}
> for each (var renderer:IGridItemRenderer in visibleItemRenderers)
>
> {
> var rowIndex:int = renderer.rowIndex; ....
> {code}
> is not null safe, because visibleItemRenderers vector can contain null items
> under some indices, made f.e. by code in *GridViewLayout.as:1753* :
> {code:actionscript}
> const renderer:IGridItemRenderer = visibleItemRenderers[index];
> visibleItemRenderers[index] = null;
> {code}
> To reproduce this, create DataGrid with data provider, that contain items
> with Date fields, and create an ItemRenderer for that column with DateField
> component, that can change the date in source data item. Error will be
> throwed when data item's field will be changed and *PropertyChangeEvent* will
> be dispatched.
> I think simple check for "null" will be enough to fix this bug.
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