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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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Summary: Spark DataGrid throws a Null Pointer Exception when data
provider's item is being changed by item renderer (was: Spark DataGrid throws
a Null Pointer Exception when data provider's item is being changed by item
renderer.)
> 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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