It'll never work properly, AlertForm.removeAlert calls PopupManager.removePopup()
On Tue, Dec 9, 2008 at 4:28 PM, Alex Harui <[EMAIL PROTECTED]> wrote: > Alert doesn't expect to be a child of a Canvas. It has to be popped up. > Post a test case of what didn't work. > > > > *From:* [email protected] [mailto:[EMAIL PROTECTED] *On > Behalf Of *devenhariyani > *Sent:* Monday, December 08, 2008 5:09 PM > *To:* [email protected] > *Subject:* [flexcoders] Getting Null exception when adding an Alert to a > Canvas > > > > I have an application that has a small 300x300 canvas, and I want to > show an Alert that is centered inside of that canvas. I tried passing > a parent parameter to Alert.show() method but that did not work, so I > was able to get the below code to center the alert inside the Canvas, > but the problem is that when a user clicks OK on the Alert, I get a > null pointer exception sometimes. Any ideas why i get the exception > somtimes, and how to get rid of it?? > > //app popup alert to parent container > var alertMsg:Alert = new Alert(); > alertMsg.text = arrErrorMsgs.join("\n\n"); > alertMsg.title = "Invalid Feedback Form"; > alertMsg.owner = Application.application.cnvFeedback; > alertMsg.explicitMaxHeight = 300; > alertMsg.explicitMaxWidth = 300; > Application.application.cnvFeedback.addChild(alertMsg); > > -------------------------------------------------------- > EXCEPTION > --------------------------------------------------------- > TypeError: Error #1009: Cannot access a property or method of a null > object reference. > at > > mx.managers::PopUpManagerImpl/findPopupInfoByOwner()[E:\dev\3.1.0\frameworks\projects\framework\src\mx\managers\PopUpManagerImpl.as:657] > at > > mx.managers::PopUpManagerImpl/removePopUp()[E:\dev\3.1.0\frameworks\projects\framework\src\mx\managers\PopUpManagerImpl.as:366] > at > > mx.managers::PopUpManager$/removePopUp()[E:\dev\3.1.0\frameworks\projects\framework\src\mx\managers\PopUpManager.as:196] > at > > mx.controls.alertClasses::AlertForm/removeAlert()[E:\dev\3.1.0\frameworks\projects\framework\src\mx\controls\alertClasses\AlertForm.as:502] > at > > mx.controls.alertClasses::AlertForm/clickHandler()[E:\dev\3.1.0\frameworks\projects\framework\src\mx\controls\alertClasses\AlertForm.as:541] > > > -- "Therefore, send not to know For whom the bell tolls. It tolls for thee." Like the cut of my jib? Check out my Flex blog! :: Josh 'G-Funk' McDonald :: 0437 221 380 :: [EMAIL PROTECTED] :: http://flex.joshmcdonald.info/ :: http://twitter.com/sophistifunk
