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Date: Thu, 25 Jul 2013 14:16:13 +0200
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 <CADPpF_1YH1G54HRKdCVRdbZy8Pq5sCrY0ahBCntjnRL037-Bzg@mail.gmail.com>
Subject: Re: Building Spark DataGrid dynamically
From: Martin Miko <marrtinmiko@gmail.com>
To: users@flex.apache.org
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Could you post a code sample? I've seen many strange things, but you must
be doing something really funny there.


On Thu, Jul 25, 2013 at 1:39 PM, Oleg Konovalov <olegkon@gmail.com> wrote:

> Full exception trace with numbers:
>
> TypeError: Error #1009: Cannot access a property or method of a null object
> reference.
>
>           at
> spark.components.gridClasses::GridLayout/updateTypicalCellSizes()[E:\
> dev\4.5.1\frameworks\projects\spark\src\spark\components\gridClasses\G
> ridLayout.as:867]
>
>           at
> spark.components.gridClasses::GridLayout/measure()[E:\dev\4.5.1\frame
> works\projects\spark\src\spark\components\gridClasses\GridLayout.as:44 4]
>
>           at
> spark.components.supportClasses::GroupBase/measure()[E:\dev\4.5.1\fra
> meworks\projects\spark\src\spark\components\supportClasses\GroupBase.a
> s:1148]
>
>           at
> mx.core::UIComponent/measureSizes()[E:\dev\4.5.1\frameworks\projects\
> framework\src\mx\core\UIComponent.as:8496]
>
>           at
> mx.core::UIComponent/validateSize()[E:\dev\4.5.1\frameworks\projects\
> framework\src\mx\core\UIComponent.as:8420]
>
>           at
> spark.components::Group/validateSize()[E:\dev\4.5.1\frameworks\projec
> ts\spark\src\spark\components\Group.as:1012]
>
>           at
> mx.managers::LayoutManager/validateSize()[E:\dev\4.5.1\frameworks\pro
> jects\framework\src\mx\managers\LayoutManager.as:665]
>
>           at
> mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\4.5.1\frame
> works\projects\framework\src\mx\managers\LayoutManager.as:816]
>
>           at
> mx.managers::LayoutManager/doPhasedInstantiationCallback()[E:\dev\4.5
> .1\frameworks\projects\framework\src\mx\managers\LayoutManager.as:1180 ]
>
>
> On Thu, Jul 25, 2013 at 12:17 AM, OmPrakash Muppirala
> <bigosmallm@gmail.com>wrote:
>
> > Moving topic to "users" list.
> >
> > Oleg, you will get a better response in this forum for questions like
> > these.  Please make sure you are subscribed to users@flex.apache.org to
> > see further responses.  You could do so by sending an email to
> > users-subscribe@flex.apache.org.
> >
> > Thanks,
> > Om
> >
> >
> > On Wed, Jul 24, 2013 at 9:12 PM, Oleg Konovalov <olegkon@gmail.com>
> wrote:
> >
> >> Hi,
> >>
> >> I am building a screen with one Static DataGrid and one Dynamic (data
> >> comes
> >> through SOAP
> >> and I do not know the number of columns or their names in advance).
> >> I also get a list of column names in order from another SOAP call.
> >>
> >> That Dynamic DataGrid works (converting data from Vector of Objects to
> >> ArrayList of Columns).
> >>
> >> I still have a few problems:
> >>
> >>
> >> 1) I need to implement "Clear" of that Dynamic table.
> >>
> >> No matter what I tried:
> >>
> >> arrayColl=null;
> >>
> >> arrayColl.removeAll();
> >>
> >> arrayColl = new ArrayCollection();
> >>
> >> myDG.dataProvider=null;
> >>
> >> myDG.dataProvider=new ArrayCollection();
> >>
> >> I am getting NULL reference exception coming from some system code:
>  if
> >> (cell.visible)...   where cell is null.
> >>
> >> How can I clear that dynamic DG ?
> >>
> >>
> >>
> >> full exception stack:
> >>
> >> TypeError: Error #1009: Cannot access a property or method of a null
> >> object
> >> reference.
> >> at spark.components.gridClasses::GridLayout/updateTypicalCellSizes()
> >> at spark.components.gridClasses::GridLayout/measure()
> >> at spark.components.supportClasses::GroupBase/measure()
> >> at mx.core::UIComponent/measureSizes()
> >> at mx.core::UIComponent/validateSize()
> >> at spark.components::Group/validateSize()
> >> at mx.managers::LayoutManager/validateSize()
> >> at mx.managers::LayoutManager/doPhasedInstantiation()
> >> at mx.managers::LayoutManager/doPhasedInstantiationCallback()
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> 2)  It seems that by default that Dynamic DG puts columns in
> alphabetical
> >>
> >> order, which is of course not what I need.
> >>
> >> Any way to disable that or fix somehow?
> >>
> >>
> >>
> >>
> >> 3) I need to show 2 DGs on the screen, and the second of them is
> Dynamic,
> >>
> >> and allow user to resize them vertically to be able to see more in
> static
> >> or dynamic DG.
> >>
> >> I put them in VDividedBox (and set height of both DG and container to
> >> 100%).
> >>
> >> It split the screen vertically 50:50, but still there is no draggable in
> >> between,
> >>
> >> so can't resize.
> >>
> >>
> >>
> >> Any help is very appreciated.
> >>
> >>
> >>
> >>
> >> TIA,
> >>
> >> Oleg.
> >>
> >
> >
>
>
> --
> Thank you,
> Oleg.
>


-- 
Martin Miko

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