ApplicationUpdaterUI crashes/dumps in mx.core.windowClasses::StatusBar/updateDisplayList

[DaddyDog1]

Hi Folks, my first pass at creating an air updater and I am dead in the water.

I'm compling in Flex 4.0 with 3.0 compatibility mode.  I place a breakpoint in statusBarBackground.setActualSize(unscaledWidth, unscaledHeight); and it's non-null the first time.  Then I add call 'checkForUpdates()' and I get dump.  I've tried setting the WindowedApplication to false etc etc.  But no love.

What could be setting my statusBarBackground to null?

Here's the stack dump.

Main Thread (Suspended: TypeError: Error #1009: Cannot access a property or method of a null object reference.)

mx.core.windowClasses::StatusBar/updateDisplayList

mx.core::UIComponent/validateDisplayList

mx.managers::LayoutManager/validateDisplayList

mx.managers::LayoutManager/doPhasedInstantiation

mx.managers::LayoutManager/doPhasedInstantiationCallback

Any help is much appreciated.

--Doug

[chris.campbell]

Hi Doug,

Thanks for reporting the issue.  I'll ask around, but is it possible to get access to a sample app that illustrates the problem?

Thanks,

Chris

[DaddyDog1]

Unfortunately no, it's behemoth to begin with and contains a bunch of prorietary data.  If I don't get some insite from the forum, I'm going to need to start stripping it down and see if I can get a test case.  If you come across anything that rings a bell or something I should try, please post.

[DaddyDog1]

Hi Chris,

It seems to be 4.0 with 3.0 compatibility mode flicked on which breaks the updater. I have a 1 file application below.   Can you check it out without me sending you a project?

Thanks,

Doug

<?xml version="1.0" encoding="utf-8"?>

<mx:WindowedApplication creationComplete="windowedapplication1_creationCompleteHandler(event)"

layout="absolute"

xmlns:mx="http://www.adobe.com/2006/mxml">

<mx:Script>

<![CDATA[

import mx.events.FlexEvent;

protected function windowedapplication1_creationCompleteHandler(event:FlexEvent):void {

// TODO Auto-generated method stub

checkForUpdate();

}

import flash.events.ErrorEvent;

import air.update.ApplicationUpdaterUI;

import air.update.events.UpdateEvent;

import mx.controls.Alert;

private var appUpdater:ApplicationUpdaterUI = new ApplicationUpdaterUI();

private function checkForUpdate():void {

setApplicationVersion(); // Find the current version so we can show it below

appUpdater.updateURL = "http://wo.iointegration.com/workflow/workflow/air/update.xml"; // Server-side XML file describing update

appUpdater.isCheckForUpdateVisible = false; // We won't ask permission to check for an update

appUpdater.addEventListener(UpdateEvent.INITIALIZED, onUpdate); // Once initialized, run onUpdate

appUpdater.addEventListener(ErrorEvent.ERROR, onError); // If something goes wrong, run onError

appUpdater.initialize(); // Initialize the update framework

}

private function onError(event:ErrorEvent):void {

Alert.show(event.toString());

}

private function onUpdate(event:UpdateEvent):void {

appUpdater.checkNow(); // Go check for an update now

}

// Find the current version for our Label below

private function setApplicationVersion():void {

var appXML:XML = NativeApplication.nativeApplication.applicationDescriptor;

var ns:Namespace = appXML.namespace();

//ver.text = "Current version is " + appXML.ns::version;

}

]]>

</mx:Script>

</mx:WindowedApplication>

[chris.campbell]

Hi Doug,

I'll try your code out but I had asked around about this post and heard back that this was a known issue but that it should be fixed with the latest AIR release.  Here's a link to a forum post that discusses a problem similar to yours and the solution required:

http://forums.adobe.com/message/3060118#3060118

Chris

[chris.campbell · Accepted solution]

Hey Doug,

I tried out your sample (thanks by the way, makes my life *much* easier!) and I reproduced the exception with Flex 4.0/AIR 1.5.3 with Flex 3 compatibility turned on.  I switched my SDK to Flex 4.1/AIR 2 with Flex 3 compatibility and the error went away.

Hope this helps,

Chris