Does anybody has any suggestion to solve this problem. It is acting as blocker to moving towards Flex 4 release version.
Please help. Regards, Pradeep On Mon, Apr 12, 2010 at 7:36 PM, prad_ch <[email protected]>wrote: > > > I am getting a null object reference error while trying to instantiate an > mxml component from actionscript. This same code works if compiled from > Flash Builder Beta 2 version. > I am getting the error only if the code is compiled in Flash Builder 4 > (Flex 4 release version). > > The problem seems to be related to creation policy of the component but I > have not been able to figure out how to resolve it. I have already specified > creation policy as "all". > > Please help. > Pradeep > > Following is the prototype example of code. > ---------------------------------------------------------- > CustomAccountGrid.mxml > > <?xml version="1.0" encoding="utf-8"?> > <mx:DataGrid xmlns:fx="http://ns.adobe.com/mxml/2009"; > xmlns:s="library://ns.adobe.com/flex/spark" > xmlns:mx="library://ns.adobe.com/flex/mx" > width="100%" height="100%" > rowHeight="22" showHeaders="false" x="0" y="20" verticalGridLines="false" > fontSize="12" fontWeight="normal" borderVisible="false" > > <mx:columns> > <mx:DataGridColumn > dataField="name" > width="200"/> > <mx:DataGridColumn id="registerBalance" > textAlign="right" > width="100"/> > </mx:columns> > </mx:DataGrid> > > ---------------------------------------------------------- > AccountView.mxml > > <?xml version="1.0" encoding="utf-8"?> > <s:Panel xmlns:fx="http://ns.adobe.com/mxml/2009"; > xmlns:s="library://ns.adobe.com/flex/spark" > xmlns:mx="library://ns.adobe.com/flex/mx" > xmlns:cust="test.custom.component.*" > width="100%" height="100%" > cornerRadius="4" > title="Spending Accounts" > fontSize="15" fontWeight="bold" creationPolicy="all"> > > <s:Group height="24" left="10" right="10" top="10" fontSize="12" > fontWeight="normal" > > <s:layout> > <s:HorizontalLayout gap="5" verticalAlign="middle"/> > </s:layout> > <mx:LinkButton label="Add" height="24" paddingBottom="2"/> > <mx:LinkButton label="Manage" height="24" paddingBottom="2"/> > <mx:LinkButton id="accountTransferLink" label="Account Transfer" > height="24" paddingBottom="2"/> > <mx:LinkButton label="Refresh" height="24" paddingBottom="2"/> > </s:Group> > > <mx:Accordion width="100%" height="100%" top="44" fontSize="12" > fontWeight="normal" > creationPolicy="all"> > <s:NavigatorContent label="Money" width="100%" > bottom="0" contentBackgroundAlpha="0xFFFFFF" height="70%"> > <cust:CustomAccountGrid id="moneyAccount" /> > </s:NavigatorContent> > <s:NavigatorContent label="Credit" width="100%" height="70%"> > <cust:CustomAccountGrid id="creditAccount" /> > </s:NavigatorContent> > </mx:Accordion> > > </s:Panel> > > ---------------------------------------------------------- > AccordionTest.mxml > > <?xml version="1.0" encoding="utf-8"?> > <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"; > xmlns:s="library://ns.adobe.com/flex/spark" > xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" > xmlns:ui="test.custom.ui.*" > creationComplete="creationComplete(event)"> > > <fx:Declarations> > <!-- Place non-visual elements (e.g., services, value objects) here --> > </fx:Declarations> > > <fx:Script> > <![CDATA[ > import mx.events.FlexEvent; > > import test.custom.ui.AccountView; > private var _spendingAccount : AccountView; > > function creationComplete(event:FlexEvent):void{ > _spendingAccount = new AccountView(); > _spendingAccount.moneyAccount.dataProvider = {}; > _spendingAccount.creditAccount.dataProvider = {}; > } > ]]> > </fx:Script> > <!-- This works fine. creating through script gives error. > <ui:SpendingAccountView/> > --> > </s:Application> > > >
