ActionScript 3.0 :: Error When Calling AddChild Method?
Apr 7, 2011
I created a new class as DraggableObject in Flash CS5 with the following definition:
package {
import flash.display.MovieClip;
public class DraggableObject extends MovieClip{
public function DraggableObject(){
[Code].....
Before running the code, I had a simple rectangle object converted to a movie clip and exported it to actionscript with the class of 'DraggableObject'. I just had it in library (i. e. no other instance in the stage). What I wanted is to create an instant of it at run-time ( 'draggableObject' ) and have it added to the display list of the stage, throgh its method 'draggableObject.addToStage()'.
And I don't have an idea as to what 'null object' referes to here. Since I created an instance in the line "var draggableObjectraggableObject = new DraggableObject()", it cann not be null....? When I commented out the line 'stage.addChild( this );' in the class definition (line9) it works with the trace statement output.
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Jun 15, 2011
I'm trying to have a class file which can add objects to the stage via addChild; however, when I call addChild from within the class file, I get the error "1180: Call to a possibly undefined method addChild." I've tried importing flash.display.* and that doesn't fix the problem. Does the class file have to extend Sprite or MovieClip to be able to add objects to the stage?
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Oct 25, 2010
I'm trying to create some objects at runtime in AS3 rather than at authortime in the Flex part of the application. My problem is adding them to the stage. The addChild method fails when I add the Textfield to the Panel, and I've tried using "this.addchild", and AddElement, but either it throws an exception or won't compile.
The error message is: [Fault] exception, information=Error: addChild() is not available in this class. Instead, use addElement() or modify the skin, if you have one.
Here's the code:
Code:
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Oct 28, 2009
I am trying to emulate (in a limited way) the behavior of JavaScript's XMLHttpRequest object through Flash/ActionScript 3, in order to overcome the same-domain limitation. But I'm discovering that ActionScript has its own limitations in that regard. I admit that I might be mistaken, but from what I understand it is theoretically still possible to do this sort of cross-domain scripting using ActionScript, so long as you get all the permissions right. And that's where I'm running into trouble.
First, I borrowed some open-source code for a class called AjaxRequest, which I have saved as /ajax/AjaxRequest.as. I then created a Flash file called /jsajax.fla which exports to the final SWF file, /jsajax.swf. Now, here's the ActionScript code that comprises the first and only frame of the Flash file:
import ajax.AjaxRequest;
Security.allowDomain("domainone.com");
Security.allowDomain("domaintwo.com");[code]....
This is the only case I could not get working, and this is the case I need to get working. The first two were really just test scenarios to see if the script was working at all. When I try to run my jsAjax function here, I wind up with an error that shows up twice in Firebug:
uncaught exception: Error calling method on NPObject! [plugin exception: Error in Actionscript. Use a try/catch block to find error.].
uncaught exception: Error calling method on NPObject! [plugin exception: Error in Actionscript. Use a try/catch block to find error.].
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Jan 20, 2012
I have a flash video on my page as follows:
<script type="text/javascript">
var flashvars = {
};
[code].....
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May 24, 2011
[Code].....
getUser was already in UserService.java. I just created getUser2 and it's identical to getUser. When I try to call getUser2, i get the "Cannot invoke method" error. question: Do I need to specify getUser2 in some other file? like in some configuration file? if so, which one and how do I do it.
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Mar 23, 2011
To be exact this is the error.
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at fl.containers::BaseScrollPane/drawBackground()
at fl.controls::TileList/draw()
at fl.core::UIComponent/callLaterDispatcher()
Now I've tried several of Adobe's own examples from this page, http:/[url]....., and they all throw this error as well.The error is triggered by the TileList instance being the argument of the addChild function.Here's my package, which works fine when I change the displayComponent is be a List.
package com.pennstate {
import fl.data.DataProvider;
import flash.display.MovieClip;[code]........
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May 6, 2011
I am attempting to make a collapsing list like the ones in google adwords. The compiler is telling me that addChild is not a valid method. Here is my code:
package comps {
import spark.components.Button;
import spark.components.Group;
import spark.components.TextArea;
public class CollapsibleList extends Group {
[Code] .....
I am assuming the compiler isn't lying to me so how do I get those objects (children) to appear?
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May 19, 2011
I'm trying to get an image to appear on a screen through a class, and I keep getting:
Quote:
Location: Stuff.as, line 21
Description: 1180: Call to a possibly undefined method addChild.
Source: addChild(sp);
I've tried to fix it on my own, but it isn't working.my code for the files is below.
Stuff.as
ActionScript Code:
package newRPG_Class {
import flash.display.Sprite;
[code]...
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Sep 26, 2010
It seems not to be working:
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0" width="600" height="300" id="externalInterface" align="middle">
[Code].....
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Sep 23, 2011
Making a flash video streaming web-app using Actionscript 3's external Api. I am at a very rudimentary phase of the project where we're just experimenting with external interface. Right now i just have a flash object and 3 buttons each to play pause and load a video. The only button that is currently set up to do anything is the load button. My swf and my html file sit on the same file system, and my video files sit on another server with traffic being redirected through a media server.When i press the load button, which should just give it the path of the video file on it's server. Instead it throws an error that reads "Error: Error Calling method on NPObject". [code]I've read in a lot of places that this is an issue with security, but both my swf and html are in the same folder on my local machine. Only the files come from outside, and in any case I think i've set the security settings correctly when i declare my flash player in the object tag, but maybe i'm missing something there.if you can't solve my question directly can someone please explain what "error calling method on NPObject" means? I'm sure its specific to flash-js communications because i've never seen it before and that's what i have gathered from my googling.
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Oct 31, 2010
I typed this into my adobe flash ide
PHP Code:
var bitmapData:BitmapData = new BitmapData(100,100);
var bitmap:Bitmap = new Bitmap(bitmapData);
super.addchild(bitmap);
and compile it, the error pop up like the above (in the title) ReferenceError: Error #1070: Method addchild not found on flash.display.MovieClip I don't understand, could someone point out what is the error in my code?
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Apr 12, 2010
I have a WCF web service (using basicHTTPBinding) which I am connecting to from a Flex application. I am using the FlexBuilder code generation to make a proxy for the web service.This has been working great until I tried to call a method on the web service that has no parameters. Here is it's interface declaration:
[OperationContract]
DateTime GetCurrentDateTime();
I then started getting HTTP 500 code responses from the service.Inspecting the HTTP response with Fiddler shows that WCF is reporting the following error:
Error in deserializing body of request message for operation 'GetCurrentDateTime'.
The OperationFormatter could not deserialize any information from the Message because the Message is empty (IsEmpty = true)
So it seems that there is an incompatability between Flex and WCF whan calling methods that have no paramaters - Flex doesn't include anything in the message but WCF is expecting something to be there.Is there any way to configure either Flex or WCF to work around this or am I going to have to include dummy parameters in such operation contracts?
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Apr 18, 2011
I've been playing with the visualization API aka dynamic charts and I've found that the example at [URL] does not really work on localhost. That is, Error calling method on NPObject is thrown when a event is clicked (points A and B in the example aforementioned). I suppose that is a security issue on the server end (Google's flash base).Since that jsFiddle code is hosted on a domain, the note at the very bottom of the documentation should not apply:Because of Flash security settings, this (and all Flash-based visualizations) might not work correctly when accessed from a file location in the browser [URL] rather than from a web server URL [URL] .
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Oct 2, 2009
TypeError: Error #1009: Cannot access a property or method of a null object reference. the main idea is calling a method from subclass that inherit to a superclass.. here is the code
[CODE]...
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Jul 13, 2010
I got this Error : 1061: Call to a possibly undefined method addChild through a reference with static type Class.
what I'm trying to do :I have create a new class called Graph and make it extends Sprite and add a scroolpane to my stage and make an empty movie clip called content_mc and make the source of the scrollpane equals to content_mc
in the first frame i wrote this code
import Graph;
var graph:Graph = new Graph();content_mc.addChild(graph);
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Jan 16, 2012
I have downloaded Box2d ([URL]) and created a project that looks like this: [URL]. catalyst is the green cube and it has the base class "shapes.box", it is inside "world" which has the base class "wck.World". What i want to do is to add another "catalyst" from the library inside "world" when i click on add_btn. I tried to accomplish this by this code:
[Code]...
Symbol 'buttons', Layer 'Actions', Frame 1, Line 41061: Call to a possibly undefined method addChild through a reference with static type Class.
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Jul 29, 2011
I have called this flash code in Flex using SWF loader . I got the following Error. Here I have attached flash coding for header_text_fla Kindly do the needful.
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at header_text_fla::MainTimeline/loaderComplete()
var myEvent:Event;
var myParams:LoaderInfo;
[code]....
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Aug 16, 2010
I have two classes. The Main class calls a function, which is defined in a Second class.I'm getting the following error:Error 1120: Access of undefined property myFunctionBasically, I am creating buttons in the Main class that will add a corresponding Child to an Object in the Second class (if you click one button, child x1 will be added, if you click another button, child x2 will be added, and so forth).Here's the relevant code for the Main.as file:
package
{
import flash.display.MovieClip;
[code].....
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Apr 9, 2011
I am working on a quiz system. Normally it uses jpeg images with each question. But a few of the quizzes instead feature animated .SWF files. I want to use jquery swfobject to call the play() method, once the user has clicked on an answer.
My solution works fine locally, but when I try to run it online, it throws the "Error calling method on NPObject!" message.
The quiz HTML is located on www.somedomain.com and the SWFs are on images.somedomain.com. So, I'm guessing this is a cross-domain thing.
Trouble for me is, I don't know anything about Flash... how to edit SWF files, anything about Flash attributes, or the like.
Here's an example of my code:
<div class="photos">
<object data="http://images.somedomain.com/q1tattooquiz.swf" type="application/x-shockwave-flash" width="600" height="350">
<param name="movie" value="http://images.somedomain.com/q1tattooquiz.swf">
[Code].....
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Mar 17, 2011
So I have an AS3 audio player which receives commands from Javascript.I have a function in the flash file called 'set_song', which sets the URL for the song to be played. The first time I call it using something like
Code:
document.getElementById('audio_player').set_song(response.url);
(response.url being the URL response from an AJAX call) it works fine and all the other functions on the player work fine but if I then run the same function a second time I get the "Error calling method on NPObject!" error in Firebug. I googled this and it said it was something to do with permissions but;
The site is at dftba[dot]com
The flash file is at dftba[dot]com
The javascript files are at [1/4][dot]cdns[dot]dftba[dot]com
The audio files are at vox[dot]dftba[dot]com
And I have
Code:
Security.allowDomain("dftba[dot]com");
Security.allowDomain("www[dot]dftba[dot]com");
Security.allowDomain("new[dot]dftba[dot]com");
[code]...
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Mar 15, 2011
I'm using Uploadify to upload file in my CMS. Everything works fine until recently. I got an error Error calling method on NPObject on this line
document.getElementById(jQuery(this).attr('id') + 'Uploader').startFileUpload(ID, checkComplete);
on this part
[code]....
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Jul 24, 2006
Code:
class A{
function A(){
trace("construct");
}
private function moo(){
[code]....
yet this doesn't, I'd expect it to: construct, start mooing, moo!, moo!, moo!, ...yet the moo! moo! moo! doesn't appear, as if moo() never gets called it all.
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May 26, 2010
Everywhere I've looked has instructed me to download plugins and addons because they're "superior." I'm just looking for a simple fade in/fade out when a child is added/deleted (if fadein is all I can get, I'll take it.) Here is a function I'm calling...
[Code]...
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May 26, 2009
I have four classes -
class Init - intialises some variables, and is the doc Class.
class Street - loads XML data for, say, a number of streets in a particular area
class House - loads in the houses data for one particular street
class DisplayHouse - displays graphics on screen for the houses
This all seems to be working apart from the actual graphical display of objects.In the ouput window I am seeing the results I need to see pertaining the the XML data loaded.The problem is that in House - I have the code :
var new _house = new DisplayHouse();
addChild (_house);
and DisplayHouse is a simple graphics-shape:
var drawHouse:Sprite=new Sprite();
code... to draw house!
addChild(drawHouse);
Now, when I comile, I keep getting this error:
Location: House.as
Description: 1180:call to undefined method addChild
Source: addChild (_house);
House extends sprite and has import Sprite and all that! - infact all the classes have the same imports and extend Sprite!semi-colons are all in right places, there are no typos!I simply cannot understand why addChild is an undefined method in this case!
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Mar 21, 2010
I have a main SWF e-learning tutorial and want to have video pop up on certain screens. over the main area.It would be like a person walking over a screen shot of a program.
1. Should I do an load the video through an Add Child method or load it to another level? User would click a button to see the video.
2. Can you pull out all the back ground in a program like Adobe Premiere and have a transparent background or will I need to put some form of a background in like the screenshot.
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Nov 19, 2010
I am getting this error: 1180: Call to a possibly undefined method startWorld.but the method startWorld is defined as you can see in attachment.
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Nov 4, 2009
when i use addChild method in my class I got this message . Why it shows error "Call to possibly undefined method addChild"
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Sep 30, 2010
In Flash CS5 I am trying to load an image from a class and I am getting Call to a possibly undefined method addChild. In the class fileNot sure how to fix this as I have a sprite class and believe I have done everthing correct.The image is in the same folder as the .fla and .as file
[Code]...
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Jan 27, 2011
I would like to know the internals of that method, in other words what exactly happens when I call that method. If someone can explian it with a list 1,2,3... would be great. including events..
and the addElement method too, if is possible.
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