Thanks for that. I have tried debugging also.... What I have understood looking into that is, inside the module the image components 'userPics' is not a image component instead it is a object with null assigned to it. I think thats the reason it is saying 'Cannot access a property or method of a null object reference'
I have tried checking examples in the internet I found many examples where they will be accessing function and variables inside the module and that is working for me too. Have ever tried accessing UI component in module from main application. On Fri, Feb 4, 2011 at 12:51 PM, Kronos <[email protected]> wrote: > Sorry cant help u much... the code looks fine. However my guess is > that your module is not getting loaded for some reason. > Why dont u debug the code and see if ur onHeaderModuleReady function > is getting called or not. The most likely expanation is that it isnt > and because of that ur variable jpl_head never gets initialized. > Another thing that u can see before debugging is when the application > loads is the default image (jpl_head.png) getting displayed on the > screen. If it is then there is something else wrong in the code and u > wont find out without debugging. > > Sorry if I am stating the obvious. > > On Feb 3, 8:57 pm, Flex Hatter <[email protected]> wrote: > > Hi all, > > > > Im still stuck with this... anybody know solution for this? > > > > On Thu, Jan 27, 2011 at 5:26 PM, Flex Hatter <[email protected]> > wrote: > > > Hi all, > > > > > I'm trying to use module in flex. I tried create a header module which > is > > > loaded by the main > > > application and should update the image component in the header. I have > > > posted my code > > > below. I cannot update the image component in header, please help me in > > > fixing the code and > > > suggest me if any better way. > > > > > *index.mxml* > > > <?xml version="1.0" encoding="utf-8"?> > > > <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; > > > backgroundColor="#f2f2f2" backgroundAlpha="1" > > > layout="absolute" width="1000" height="800" > > > creationComplete="init()"> > > > <mx:Script> > > > <![CDATA[ > > > import mx.controls.Alert; > > > import com.jpl.modules.*; > > > import mx.events.ModuleEvent; > > > import mx.modules.ModuleManager; > > > import mx.modules.IModuleInfo; > > > > > private var moduleInfo:IModuleInfo; > > > private function init():void{ > > > loadHeader(); > > > } > > > > > private var jpl_head:Object; > > > //loading header into application > > > private function loadHeader():void{ > > > mod_progress.visible = true; > > > moduleInfo = ModuleManager.getModule( > > > "com/jpl/modules/headerMod.swf" ); > > > moduleInfo.addEventListener( ModuleEvent.READY, > > > onHeaderModuleReady); > > > moduleInfo.addEventListener(ModuleEvent.ERROR, > > > handleHeaderModuleError); > > > moduleInfo.addEventListener(ModuleEvent.PROGRESS, > > > onHeaderModuleProgress); > > > moduleInfo.load(); > > > } > > > protected function onHeaderModuleReady( > > > moduleEvent:ModuleEvent ):void{ > > > jpl_head = moduleInfo.factory.create() as headerMod; > > > mod_holder.addChild(moduleInfo.factory.create() as > > > DisplayObject); > > > mod_progress.label = "" > > > mod_progress.visible = false; > > > } > > > protected function handleHeaderModuleError( > > > moduleEvent:ModuleEvent ):void{ > > > throw new Error( "Module error loading : " + > > > moduleEvent.module.url ); > > > } > > > protected function onHeaderModuleProgress( > > > moduleEvent:ModuleEvent ):void{ > > > mod_progress.label = 'Loading Header'; > > > mod_progress.setProgress( moduleEvent.bytesLoaded, > > > moduleEvent.bytesTotal ); > > > } > > > ]]> > > > </mx:Script> > > > > > <mx:Canvas id="mod_holder"> > > > </mx:Canvas> > > > > > <mx:ProgressBar id="mod_progress" > > > width="300" indeterminate="true" > > > trackHeight="5" labelPlacement="top" > > > label="Loading .."/> > > > <mx:Button x="143" y="154" label="Button" > > > click="jpl_head.changeUserPic('video_icon.png');"/> > > > > > </mx:Application> > > > > > *headerMod.mxml* > > > <?xml version="1.0" encoding="utf-8"?> > > > <mx:Module xmlns:mx="http://www.adobe.com/2006/mxml"; > layout="absolute"> > > > <mx:Script> > > > <![CDATA[ > > > [Embed(source="assets/images/jpl_head.png")] > > > [Bindable] > > > public var headerImgCls:Class; > > > > > public function changeUserPic(picUrl:String):void{ > > > userPics.source = picUrl; > > > } > > > ]]> > > > </mx:Script> > > > <mx:Canvas> > > > <mx:Image id="hdImg" width="1000" height="75" > > > source="{headerImgCls}"/> > > > <mx:Image id="userPics" x="924" y="9" > > > width="54" height="54"/> > > > </mx:Canvas> > > > </mx:Module> > > > > > *Error on clicking button in index.mxml* > > > TypeError: Error #1009: Cannot access a property or method of a null > object > > > reference. > > > at > > > > com.jpl.modules::headerMod/changeUserPic()[E:\FlexTraining\jlp\src\com\jpl\modules\headerMod.mxml:10] > > > at > > > index/___index_Button1_click()[E:\FlexTraining\jlp\src\index.mxml:56] > > -- > You received this message because you are subscribed to the Google Groups > "Flex India Community" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<flex_india%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/flex_india?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Flex India Community" group. 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