I commented out all of the bindings and ran teh code again, I got the
same error.
so I took out the change event function : viewSelectedProfile() then
the error stopped.
Here is the datagrid code:
<mx:DataGrid id="dgUserList" width="100%" height="100%"
headerStyleName="normalTenBold"
dataProvider="{userListDP}" initialize="test(event)"
change="viewSelectedProfile(event
<mx:columns>
<mx:DataGridColumn id="dgcStatus" headerText="Status"
dataField="isActive" width="50"/>
<mx:DataGridColumn id="dgcLastName" headerText="Last Name"
dataField="user_lname" width="100"/>
<mx:DataGridColumn id="dgcFirstName" headerText="First Name"
dataField="user_fname" width="100"/>
<mx:DataGridColumn id="dgcPhone" headerText="Phone"
dataField="user_phone" width="100"/>
<mx:DataGridColumn id="dgcEmail" headerText="Email"
dataField="user_email" width="200" />
<mx:DataGridColumn id="dgcRoles" visible="true"
headerText="Roles" dataField="roles" width="200"
itemRenderer="com.sync.view.community.RolesList" />
</mx:columns>
</mx:DataGrid>
change event function:
private function viewSelectedProfile(e:Event):void {
this.currentState = 'viewSelected';
//trace(e.currentTarget.selectedItem.roles);
}
Any ideas why this is throwing a mouseHandler datagrid error? it has
something to do with the viewstate being changed again bc the error
doesnt throw when i comment out this.currentState = 'viewSelected'
--- In [email protected], "gotjosh819i" <[EMAIL PROTECTED]>
wrote:
>
> Hello all, I am stuck on an issue and have run out of ideas to
debug
> it. (see below)
>
> I am having an issue with a binding. I have a datagrid and the
> onchange event triggers the viewstate to change and some
> labels/images appear, some of which have data bindings to the
> datagrid selection.
>
> I think the problem is that those label/image components within the
> view are not initialized and the error is thrown since the data
> binding doesnt know those items exist, even though the
creationPolicy
> is set to all at the top level. (the mxml file that has the
viewstate
> in it).
>
> Since its not being initialized I get this error each time I click
on
> a datagrid row.
>
> TypeError: Error #1009: Cannot access a property or method of a
null
> object reference.
> at mx.controls::DataGrid/mx.controls:DataGrid::mouseUpHandler
> ()[C:\dev\flex_201_gmc\sdk\frameworks\mx\controls\DataGrid.as:4218]
>
> I am positive those items are not being init'd bc i put a
initialize
> test function that traces the components when they are initialized
> just to see if the error is occuring after they are initialized or
> before they are. This is happening before and the item never gets
> init'd.
>
> private function test(e:Event):void {
> trace("item init: " + e.currentTarget);
> }
>
> one of the items hidden in a viewstate:
> <mx:HBox>
>
> <mx:Label styleName="normalTenBold" text="Status:" width="75"
> textAlign="right"/>
>
> <mx:Image source="{(dgUserList.selectedItem.isActive)?
> iconStatusOn:iconStatusOff}" width="19" height="20"
initialize="test
> (event)"/>
>
> </mx:HBox>
>
>
> The odd thing is that the canvas which is just before the HBox
above,
> is being init'd, then the error occurs and the image component
doesnt
> init.
>
> last thing: the error in the debugger pulls up DataGrid.as and
points
> to line 4217:
>
> if (headerVisible)
> pos.y--;
>
>
> any ideas on how to get past this issue?
>
> - thanks in advance ~ Josh
>
