When you're assigning to catList, it's no longer the dataprovider for courseCat, courseCat's provider is whatever catList *used* to be.
-J On Thu, May 8, 2008 at 4:03 PM, hoytlee2000 <[EMAIL PROTECTED]> wrote: > To clarify > > catList is the dataprovider for a combobox whose id is courseCat. So > I am reading in an xml file of course categories and then adding a > 'None' choice to the list that will be its'default' selection. > > thanks, > hoyt > > > --- In [email protected] <flexcoders%40yahoogroups.com>, > "hoytlee2000" <[EMAIL PROTECTED]> wrote: > > > > private function configHandler(evt:ResultEvent):void { > > catList = evt.result.config.categories.cat; > > catList.addItemAt('None', 0); > > courseCat.selectedIndex = 0; > > } > > > > > > this is line 299: courseCat.selectedIndex = 0; > > > > > > thanks, > > hoyt > > > > --- In [email protected] <flexcoders%40yahoogroups.com>, "Alex > Harui" <aharui@> wrote: > > > > > > What is the code at courseInfo.mxml at line 299? > > > > > > > > > > > > ________________________________ > > > > > > From: [email protected] <flexcoders%40yahoogroups.com> > [mailto:[email protected] <flexcoders%40yahoogroups.com>] On > > > Behalf Of hoytlee2000 > > > Sent: Wednesday, May 07, 2008 10:11 PM > > > To: [email protected] <flexcoders%40yahoogroups.com> > > > Subject: [flexcoders] need help deciphering error message > > > > > > > > > > > > Hello, > > > > > > I get the error message below when I am running my application, > > > however it runs fine when I click continue. There isn't an error when > > > I compile in Flex builder. I checked the function that references the > > > object and they are all defined and the objects exist. > > > > > > The only thing I can think of is that the object that is referenced in > > > the function isn't displayed on the application startup (its on the > > > second canvas of a view stack) so it throws this error, however when I > > > move the call to the function to execute only when the second canvas > > > is displayed I still get the error. > > > > > > I'm sure its a common error that many newbies must hit. I appreciate > > > any clues to look for in the code. > > > > > > Thanks, > > > Hoyt > > > > > > TypeError: Error #1009: Cannot access a property or method of a null > > > object reference. > > > > > > at > > > > courseInfo/configHandler()[/Users/hoytng/Sites/pdiCMS/CourseMgmtSystem/c > > > ourseInfo/src/courseInfo.mxml:299] > > > at > > > > courseInfo/__courseCatHTTP_result()[/Users/hoytng/Sites/pdiCMS/CourseMgm > > > tSystem/courseInfo/src/courseInfo.mxml:429] > > > > > > > > -- "Therefore, send not to know For whom the bell tolls. It tolls for thee." :: Josh 'G-Funk' McDonald :: 0437 221 380 :: [EMAIL PROTECTED]
