THis issue is very similar to :
http://forums.adobe.com/message/3910406
The architecture is a loaded module pops up a new Native Window in AIR. The
data grid inside the window fails with this stack trace:
TypeError: Error #1009: Cannot access a property or method of a null object
reference.
at
spark.components::Group/addElement()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:1342]
at
spark.components.gridClasses::GridLayout/createTypicalItemRenderer()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\gridClasses\GridLayout.as:748]
at
spark.components.gridClasses::GridLayout/updateTypicalCellSizes()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\gridClasses\GridLayout.as:883]
at
spark.components.gridClasses::GridLayout/measure()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\gridClasses\GridLayout.as:444]
at
spark.components.supportClasses::GroupBase/measure()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\supportClasses\GroupBase.as:1148]
at
mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::measureSizes()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:8506]
at
mx.core::UIComponent/validateSize()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:8430]
at
spark.components::Group/validateSize()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Group.as:1012]
at
mx.managers::LayoutManager/validateSize()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\LayoutManager.as:665]
at
mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\LayoutManager.as:816]
at
mx.managers::LayoutManager/doPhasedInstantiationCallback()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\LayoutManager.as:1180]
If this problem is because of modules, I'm uncertain how to approach.
--- In flexcoders@yahoogroups.com, "Battershall, Jeff" <Jeff.Battershall@...>
wrote:
>
> Hi,
>
> I'm mid re-factoring a SDK 4.0 AIR app to 4.5 and attempting to take
> advantage of the Spark DataGrid. In this app (which is built with modules)
> I'm opening a NativeWindow and displaying a datagrid. The first error is
> that the DataGrid Skin class cannot be found. I dealt with this by creating
> a new Skin from the DataGrid and referencing that. Then when I attempt to
> populate the grid with data, I get RTEs pointing to Group.as with error #1009
> null.
>
> I can get in to more exhaustive detail about the exact error(s) but I think
> something more fundamental is happening. Note that the libs are all merged
> into code. It seems that some of the underlying libraries aren' being
> included.
>
> Does anyone have any experience or theories on what might be happening?
> ____________________________
>
> Jeff Battershall
> Application Architect
>
> T 609 520 5637
> F 609 520 5370
> C 732 666-8205
> jeff.battershall@...<mailto:jeff.battershall@...>
>
> Dow Jones Indexes
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>
