Prabhu, That was very useful.
Also how can I do Validation on some of these dynamic fields, like user should not be able to enter Alphanumeric if that is an Integer field. Please advice. TIA, Oleg On Jul 26, 2013 2:15 AM, "Prabu Moorthy" <[email protected]> wrote: > Below code render datagrid columns in original order, > > var colArr:ArrayList = new ArrayList(); > var colNames:Array=//Assign list of Datagrid column names > var len:int = colNames.length; > for(var i:int=0;i<len;i++) > { > var gc:GridColumn = new GridColumn(colNames [i]); > colArr.addItem(gc); > } > dg.columns = colArr; //dg is mxml datagrid id > dg.dataProvider = dgAC;//Assign Datagrid arrayCollection data > > > Thanks & Regards > M.Prabhu > > -----Original Message----- > From: Oleg Konovalov [mailto:[email protected]] > Sent: Friday, July 26, 2013 6:51 AM > To: [email protected] > Subject: Re: Building Spark DataGrid dynamically > > Yes, it fixed that exception: arrCol.source=new Array( { "" : ""} ); > > Any suggestions how to resolve items 2 & 3 (show columns in original order > and implement VDividerBox when second datagrid populated dynamically) ? > > > On Thu, Jul 25, 2013 at 2:21 PM, Maurice Amsellem < > [email protected]> wrote: > > > Here is a possible workaround: > > > > Instead of clearing the DG (which anyway wouldn't look very nice), what > > about setting it to one single empty column ( that is : GridColumn > > headerText= " " and dataField="_nonExistingField_" ) . > > That way, it still looks like a datagrid, although empty and it probably > > won't break. > > > > What do you think? > > > > Maurice > > > > > > -----Message d'origine----- > > De : Oleg Konovalov [mailto:[email protected]] > > Envoyé : jeudi 25 juillet 2013 20:12 > > À : [email protected] > > Objet : Re: Building Spark DataGrid dynamically > > > > No, it is Clients code, I can't post it. I am getting data dynamically > via > > SOAP, convert it to Vector of Objects, then to ArrayCollection, and pass > it > > to Spark DG dataprovider. Datagrid is declared in MXML without any > columns. > > That's it. But as I said, can't clear that AC. Any idea how to avoid that > > Null Reference? > > On Jul 25, 2013 8:16 AM, "Martin Miko" <[email protected]> wrote: > > > > > 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 <[email protected]> > > 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\fram > > > > e > > > > works\projects\spark\src\spark\components\gridClasses\GridLayout.as: > > > > 44 4] > > > > > > > > at > > > > spark.components.supportClasses::GroupBase/measure()[E:\dev\4.5.1\fr > > > > a > > > > 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\proje > > > > c ts\spark\src\spark\components\Group.as:1012] > > > > > > > > at > > > > mx.managers::LayoutManager/validateSize()[E:\dev\4.5.1\frameworks\pr > > > > o jects\framework\src\mx\managers\LayoutManager.as:665] > > > > > > > > at > > > > mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\4.5.1\fram > > > > e 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:11 > > > > 80 ] > > > > > > > > > > > > On Thu, Jul 25, 2013 at 12:17 AM, OmPrakash Muppirala > > > > <[email protected]>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 > > > > > [email protected] see further responses. You could do so by > > > > > sending an email to [email protected]. > > > > > > > > > > Thanks, > > > > > Om > > > > > > > > > > > > > > > On Wed, Jul 24, 2013 at 9:12 PM, Oleg Konovalov > > > > > <[email protected]> > > > > 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 > > > > > > > > > -- > Thank you, > Oleg. >
