I'm doing a tutorial and I get this error about the "stage". I just copied the tutorial code.. what's missing ?
Code: TypeError: Error #1009: Cannot access a property or method of a null object reference.
at ParticleDemo() at myFlashFile_fla::MainTimeline/frame1()
Code:
package {
import flash.display.Sprite;
import flash.events.Event;
[Code]...
I have a removeChild and null question. I know removeChild removes my object from the stage but stays in memory until I call null on it. My question is, if I set the object to null, do I have to removeChild it at all? For example, I have a movieclip where I addChild lots of objects to it. So If I want to completely remove all traces of said movieclip and all its children, can I just set movieClip = null, or do I have to removeChild all its children and the movieclip itself beforehand.
View 6 RepliesI think my issue is to do with referencing the stage, but not to sure. When I try
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i got this error Cannot access a property or method of a null object reference. whenever I clicked on my button
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I have begun on a list: My reference is null!Stage is null! Convert this code from as 2 to as 3 for me! Crossdomain policies are in the way of my cool idea Dynamic property names I need to use stuff on the parent! I don't want my children to scale when I scale the parent! Classes vs instances. Mod note: I do not want this topic pinned, we will use a fresh topic once we have agreed to the content.
View 9 RepliesIf I set an Object = null, does that remove all references to the Object's variables assuming there are no external references to said variables? Or do I have to manually set all said variables = null?
View 4 Repliesthe script i wrote is working fine. but the script attached to the flash player which i have no control over is throwing a script error (im using IE8).how can i fix this? if i run it locally there is no error.
'null' is null or not an object
try { document.getElementById("").SetReturnValue(__flash__toXML(function() { return document.location.hostname; }()) ); } catch (e) { document.getElementById("").SetReturnValue("<undefined/>"); }
but this is from flash script and i dont have control over it. it just say JScript - script block.
I have the following piece of code(part of a much bigger program). I this code I am re-using a motion that has been previously used successfully. The trace stmts are used to identify the exact location of the error and the error conditions as best I can.[code]
View 4 RepliesWhen you cast null to an object using Object(null), the result is an object.When you cast undefined to an object using Object(undefined), the result is an object.But saying null as Object or undefined as Object remains null.Why is this? I can't find anything in the documentation about this.
The objects that result from these casts can have properties set on and read from them. It's as if the cast created information, or removed whatever special information the null and undefined values have. But there's no indication in the AS3 documentation that the null and undefined special types are actually objects.
I am trying to add an EventListener to a MC, but I am getting the 1009 error. My script is referencing a MC that does exist. I have verified that my code is typed correctly, and that my instance names are correct.I am creating a portfolio site. On the first frame I have my main navigation (well, it's actually not the first frame. I alpha-fade everything in so it's really the 6th or 7th, but I'm not sure how pertinent that is). The main navigation works fine (5 movie clips, fyi). Clicking them will move to a different frame, and the information and sub navigation for the frame will fade up. It is the sub navigation that I am having trouble with.[code]
As you can see, it doesn't even get to the function before it gets thrown off. I have verified that the instance names are correct. The script and the MC I am trying to add it too [I/]are[I/] in the same frame, which is what's stumping me. Normally you get 1009 when the object you're trying to reference is not there, but mine is!!Obviously there is something wrong with my EventListener. I am not sure what else do; there is a gap in my understanding of AS.
I am currently working with a contractor company that is hosting a flex based website. They are putting the swf files that I have developed into their flex site.The issue that I am having is that within my swf file I need to reference the stage.I do this by "MovieClip(parent).stage"... I do not use the keyword "root", I just reference my swf's root through however many "parent"s i need. It works fine when I publish on my own, outside of their flex site. When it is used in the flex site, they are getting an error that they cannot reference the stage/ stage is null. It is vital that I am able to reference the stage of my swf.
View 2 RepliesI have an object which is assigned a number of properties:
var project_array:Array = [];
var slideObject:Object = {
project_title : myXML.projects.project[i].title.toUpperCase(),
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but I'm not quite sure where to place this. If I place it outside of the object constructor, I get "term is undefined", I guess because it doesn't know what project_clips_array is - but if I declare project_clips_array in the constructor, it appears to need to be defined, i.e. I can't create a blank property. But I can't place it in the constructor either, because it doesn't seem to allow me to run a function within an object constructor. What is the proper syntax or arrangement of code for executing this function to get the array within the object?
i am trying to access an object within a class and the object is comming up as null but i dont understand why.
this is the object:
btnLMain = new MovieClip(); //variable declared earlier in code
btnLMain.name = "btnLMain";
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I have one MXML File as
<objecthandles:ObjectHandles xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" backgroundAlpha="1" xmlns:mx="library://ns.adobe.com/flex/mx"
[code].....
i am trying to access an object within a class and the object is comming up as null but i dont understand why.this is the object:
btnLMain = new MovieClip(); //variable declared earlier in code
btnLMain.name = "btnLMain";
btnLMain.clickNum = 0;
addChild(btnLMain);
this was created in the class: LanguageButton. here is how i declared the above class within the class i am trying to instantiate it:
var btnL:LanguageButton;
then i try to access the btnLMain from the LanguageButton Class and it, (btnLMain) is comming out null:
btnL = new LanguageButton(cssLoader);
main.addChild(btnL);
btnL.btnLMain.addEventListener(MouseEvent.CLICK, btnLClick);
I have problem with accessing object created by function imported from another package.
I have 2 packages DragDrop and UserInterface. In UserInterface I create methods for buttons and later add them in DragDrop . I make it in two different ways:
One(this one works):
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I was just doing a menu system for a game project, as3 with Flash CS5. The navigation is build on the frame on the main timeline. When I was creating stuffs on the 3rd frame, the btns on the frame can not be called, returning "null", this is weird. With further study, I found that, if I delete a instance on frame 2, the problem on frame 3 will be solved. Then I found that giving the instance on frame 2 a name could also make things normal. What is happening? Why having a unnamed instanced on the previous frame could make the instances on the next frame "null"?
View 2 RepliesIn my document class named Engine, the stage variable is for some reason null:
package game
{
import flash.display.MovieClip;
[Code]....
This was working fine up until now. I just recently added two dynamic text fields into a symbol, and all of a sudden the stage is null. I really don't see the connection.
From the main timeline, I am doing a menu[code]...
My scroll bar appears but when I trace stage into my ScrollBarClass this one is null trace(stage)
from my documentclass i got a isntance of the my view class in there i got a instance of navigation class extends Sprite I got a utilz.as file with all static public functions like this one
alignToCenter(obj:DisplayObject):vid
{
obj.x = obj.stage.stageWidth/2;
}
Utilz.alignToCenter(instance of navigation class)
I get a error stage is null reference..
I keep on getting "cannot access property of a null object" errors. With the debugger I pinpointed my issue at the line where I write stage.stageWidth.So somehow the stage is null. This is within my Document class which is linked with the .fla. The strange part is that I haven't had this problem until just recently.
View 6 RepliesI have just recently started playing around with AS3 and am pretty new to what is going on in Flash (though I do have a lot of programming experience.) I have an object that I am dragging around on the mouse. I want it to be destroyed if I drop it anywhere but in a target location. I have the part where it is destroyed working, but I am running into a problem trying to find the target. When I try the following...
PHP Code:
public function DropObject(){
if (! this.hitTestObject(stage.getChildByName("Target"))){
stage.removeChild(droppedObject);
stage.removeEventListener(MouseEvent.MOUSE_MOVE,droppedObject.MouseCursorMove);
}}
I get "TypeError: Error #2007: Parameter hitTestObject must be non-null." So, "getChildByName" is returning null, but I'm not sure why. I've verified that there is an Instance name of the Target on the stage. Why can't I find it?
I am getting this error, randomly when I start my application (and it's sub applications). As you can see the stack trace is rather useless, although through the debugger I can see the parent of container (second in the stack) is an MXML class that has a repeater that repeats another component. Therefore I guess the component with the problem is that repeated component, although I am unsure what I can change to stop this from happening. If anyone can give me some insight to the FocusManager or the getFocus() function it would be really handy.[code]
View 1 RepliesI'm creating a movie clip button and for the out state I have this:
web_btn.addEventListener(MouseEvent.MOUSE_OUT, at_out);
function at_out(event:MouseEvent):void {
web_btn.gotoAndPlay(30-(web_btn.currentFrame-11));
[code].....
I am having some problem removing a null object and I realise that I have not been unloading my swf's properly. Could someone take a look at what I have been doing and tell me what I can do to make it better. I am putting my website in an exhibiton of my design work and if it lagged up due to all the clicking it would suck! so its important.
Code:
aboutBtn.addEventListener(MouseEvent.CLICK, aboutLoad);
function aboutLoad(e:MouseEvent):void {
ldr.unload();[code]....
On the stage there's an empty clip called mc1in the library there's a clip called with the class name Ballnow every frame this functions is executed:mc1.addChild(new Ball())inside ball, at frame ten:this.parent.removeChild(this)so this creates a bunch of balls on the stage, but after a while this error shows up:TypeError: Error #1009: Cannot access a property or method of a null object reference.t Ball/frame10()Edit: ok by tracing Ball's name I understand that even though the Ball is removed it continues to exist somewhere?
View 3 RepliesFor some reason, no matter what I try, a stage instance named 'track' remains null to the frame it's on. I've made sure that Auto-declare stage instances is checked. Is anyone familiar with this problem?
View 1 RepliesTypeError: Error #1009: Cannot access a property or method of a null object reference.
at QuizApp/createStatusBox()
at QuizApp()
That's the error message I get when it tries to play. What I have is an swf that loads another when its done, the new swf is blank but has a document class to an AS file. It seems the problem lies when a function is not properly being added to the stage.
The function is added like this..
Code:
package{
public class QuizApp extends Sprite{
public function QuizApp(){
createButtons();
private function createButtons() {
if (this.stage == null) {
trace("STAGE IS NULL!!!");
} var yPosition:Number;
addEventListener(Event.ADDED_TO_STAGE, addedToStage);
...
In my document class I have this
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It does not matter where I declare the var __w:Who in the constructor, as a class var or in another function entirely. The whole thing still operates normally but it's irritating not being able to set my stage.align=StageAlign.TOP_LEFT; in the constructor.... I am guessing it is something in my Who class because it does not happen if I declare any other vars the constructor in Who pretty basic:
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[code]Is my code and when adding the backtostart function i always get the error if i remove the back and backtostart parts of the code it runs fine any help?
View 1 Replies