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https://issues.apache.org/jira/browse/FLEX-32998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Justin Mclean updated FLEX-32998:
---------------------------------
Labels: easyfix easytest (was: )
> NullPointerException in AdvancedDataGrid.getFieldSortInfo
> ---------------------------------------------------------
>
> Key: FLEX-32998
> URL: https://issues.apache.org/jira/browse/FLEX-32998
> Project: Apache Flex
> Issue Type: Bug
> Components: ADG:MultiColumnSorting
> Affects Versions: Adobe Flex SDK 4.1 (Release)
> Environment: Affected OS(s): All OS Platforms
> Affected OS(s): All OS Platforms
> Language Found: English
> Reporter: Adobe JIRA
> Labels: easyfix, easytest
>
> Steps to reproduce:
> Create an advanced datagrid with custom columnRenderer and Custom header
> renderer.
> (In my application, i have to recreate the columns in the datagrid every time
> i fetch data from backend.)
> Actual Results:
> During this process we get a null pointer exception.
> TypeError: Error #1009: Cannot access a property or method of a null object
> reference.
> at mx.controls::AdvancedDataGrid/getFieldSortInfo()
> at
> mx.controls.advancedDataGridClasses::AdvancedDataGridSortItemRenderer/getFieldSortInfo()
> at
> mx.controls.advancedDataGridClasses::AdvancedDataGridSortItemRenderer/commitProperties()
> at mx.core::UIComponent/validateProperties()
> at mx.managers::LayoutManager/validateProperties()
> at mx.managers::LayoutManager/doPhasedInstantiation()
> at mx.managers::LayoutManager/validateNow()
> at mx.core::Application/resizeHandler()
> at mx.core::Application/commitProperties()
> at mx.core::UIComponent/validateProperties()
> at mx.managers::LayoutManager/validateProperties()
> at mx.managers::LayoutManager/doPhasedInstantiation()
> at mx.managers::LayoutManager/doPhasedInstantiationCallback()
> at flash.utils::Timer/_timerDispatch()
> at flash.utils::Timer/tick()
>
> When i build my application with SDK 3.5, this bug does not exist. But with
> SDK 4.1, this is consistently reproducible.
> More detailed inspection into the AdvancedDataGrid source code shows the
> following insights.
> In the method
> mx.controls.advancedDataGridClasses.AdvancedDataGridSortItemRenderer.getFieldSortInfo(),
> error happens in the following line:
> return grid.getFieldSortInfo(grid.columns[listData.columnIndex]);
> Here grid.columns[listData.columnIndex] returns null. In short,
> listData.columnIndex has value higher than the actual number of columns (not
> supposed to happen)
> Work Around / Proposed Solution
> -------------------------------
> If we can put a null check around grid.columns[listData.columnIndex], this
> issue will get fixed.
> Can we get this fixed as soon as possible.
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