ActionScript 3.0 :: Accessing Parent Property From Custom Subclass?
May 23, 2010
I am writing a program in OOP and I have a custom subclass which I make a new instance of in the document class. When I do make a new instance of this custom class, I want this (the custom subclass is a movieclip) object to be positioned at the center of the stage. However, when I try
ActionScript Code:
this.x = (this.parent.width-this.width)/2;
flash outputs an error saying '1119: Access of possibly undefined property parent through a reference with static type'
How do I access the parent property?
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Jul 10, 2009
error When your accessing a method or property from a subclass. Here's what I have done so far but no luck in my script.
1. I tried waiting for my attached movieclip to be added to my stage using the setTimeout method but no luck.
var timedProcess:Number = setTimeout(initRevealDropDown, 1000);
private function initRevealDropDown():void
{
clearTimeout(timedProcess);
var myInterface:Interface = new Interface();
myInterface.revealDropDown();
}
2. I also tried extending my subclass to interface where my instance method is defined for revealing my dropdown menu, no luck on that one.
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May 1, 2011
Can I access a static variable of a subClass' subClass? I don't want to instantiate it, just looking to get the variable because it has already been initialized by the subClass.example:
package
{
public class A extends MovieClip {
private var classB:B = new B();
[code]....
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Jun 7, 2011
Using SDK 4.1 I was able to access custom properties of a custom button component from a custom skin. The project I'm currently working requires SDK 4.5 and I'm unable to to access the properties. Here's an example:
[Code]...
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Jul 23, 2010
I have written a piece of code where I have created a custom class containing some of my custom properties.I have used multiple instances of this custom class in my main class and added it to a container.Now I need to access one of my custom property in the main class through container.getChildByName()."custom property", but I am not able to access my custom property using this.I get an error saying
Access of possibly undefined property orientation(this is my custom property) through a reference with static type ..name of my main class.
Is there no way that can i access custom property of components through the getchildbyname method of the parent container ??
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Jan 7, 2010
I am calling on different types classes from within a loop. The objects can be of different types so therefore I am using the getDefinitionByName method. here is a piece of my code:
for(var y = 0; y < mapH; y++)
{
brickHolder[y] = new Array();
[Code]....
But I got an error when I tried to call on methods. The interface is blank; doesn't have any methods in it. I am not sure if that makes a difference. But the parent class inherits it and the subclasses inherit the parent class. Can I instead use the parent class?
var brick:ParentBrick2 = ParentBrick2(new classRef());
In a nutshell, what can I do to loosely cast these objects so I am able to use any subclass methods that get called?
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Feb 8, 2012
I am building a app that pulls data from xml. The different nodes in the xml needs to build different objects. My thinking was that I must import the xml only once. Then build seperate classes for each object type. These classes will extends the xml class and apply whatever it needs to do with specific nodes data. Problem is that it seems like the subclass is created before the xml loaded. I can trace the xml data from the xml superclass but not from the subclass.
Main Class
Actionscript Code:
package MyClasses{ import flash.display.Sprite; import MyClasses.Dateline; public class Main extends Spriteprivate var dateLine; public function Main() dateLine==new(Dateline);}}
[code]....
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Dec 19, 2010
Is there a way to tell flash to instantiate a Stage subclass called "TheStage" instead of the default Stage class as root/parent of my document class?
public class TheStage extends Stage{
//code
}
Then when I do "DisplayObject.stage" I want it to return the instance of TheStage instead of the default Stage insteance. I want to do this so that I can override the addEventListener method of the Stage class. So if I call DisplayObject.stage.addEventListener I can execute my own code routine. Is that possible and how?
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Jul 11, 2010
In my flash document, I have a movieclip drawn on the flash stage (put there myself, not dynamically). I want to use this as a holder for an external .swf. I am using a sub-class to run the loading script. I pass the stage reference to it as the variable "theStage". It has no trouble loading things directly to the stage, but it can't find my movieclip for some reason. I have exported the movieclip for actionscript in the symbol properties panel and have given it an instance name.I've tried theStage.myMovieClip.addChild(mySwf); and suchlike, but always get this error message in output:ReferenceError: Error #1069: Property myMovieClip not found on flash.display.Stage and there is no default value.at MethodInfo-206()Some more information: It works from the main class without any trouble.
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Jun 12, 2005
So, how would you create a class that can access a variable in the class where the subClass was created(superclass), I realise this might be unclear so in example
PHP Code:
package {import flash.display.MovieClip;public class Main extends MovieClip {public va demoString:Strin = "TEST";public static var newClass:SubClass;public function
[code].....
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Jun 15, 2009
I'm using a preloader to load an external SWF then initiating it through its document class using this code:
Code:
private function loaderCompleteListener(event : Event) : void {
var loaderInfo : LoaderInfo = event.target as LoaderInfo ;
[Code]....
The problem i'm getting is that the Flash that is being loaded has a lot of classes exporting on the first frame, which now cannot be accessed, and therefore I get "The definition of base class cannot be found" errors.
How do I ger the items in the library that export to AS accessible by the parent loading SWF.
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Feb 24, 2012
So, how would you create a class that can access a variable in the class where the subClass was created(superclass), I realise this might be unclear so in example
[Code]...
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Oct 31, 2010
I want to access a variable from subclass which is in a parent class.Something like this:
class a extends b
{
private var a;
public function a()
[code]....
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Jul 20, 2009
I've defined two classes, one of which extends the other. The superclass defines a constant and I can't seem to access it through the subclass.
Code:
public class BigClass
{
public static const BIG_CLASS_CONSTANT:String = "Hi Mom.";
[Code]....
Shouldn't polymorphism allow a subclass to access constants of the classes they extend? Does the subclass have to reference the parent constant in some other way than a simple extension? Do I actually have to declare that constant in each and every class that decided to extend from that parent (but then how would the parent refer to it?)? Or (and this is the most likely) is there something completely different that I'm missing?
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May 4, 2010
I've been working with/around and dodging a situation where I'm trying to access FLA library movieclip assets, but NOT from the document class. I capitalize this because this is my 4th forum posting. I know the answer to that one:
instanceName:ClassName = new ClassName();
The easiest solution for accessing library items from a SubClass looks to be this:
// at topimport TestLocalMC;// in constructorvar box:TestLocalMC = new TestLocalMC();addChild(box);
However, it doesn't show up. I tried a fake non-existent class. It gave me an error so I know it's referencing a Class in the library that I supplied. If I trace the object, it shows up. If I trace the X value, it says 0. So logically, it should be right in front of me..but it's not there! .Am I on the right track? Is this familiar at all to anybody? Is there something I'm missing?
if I could reference FLA library items with a bit of freedom from the document class. Having to go up the hierarchical class tree everytime to retrieve a movieclip is getting rather painful.
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Aug 16, 2010
I am hoping someone can explain about subclasses accessing variables from the super class. I found that the subclass can only access variables which are set in the constructor of the super class. Is there any way around this?
[Code]...
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May 6, 2010
how to access library items in the main SWF directly from a SubClass by doing this:
package{ import SubClass; public class Main extends MovieClip{public var mySubClass:SubClass = new SubClass;this.addChild(mySubClass); }//class }//package
package{ import Box; public class SubClass extends MovieClip { public function SubClass():void{var train:Box = new Box;this.addChild(box);}//SubClass constructor function }//class }//package
But how do I access library items of a loaded SWF in the same fashion? Importing is different from loading and I'm not sure how or where to piece instances together at runtime.
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Aug 10, 2011
I'm trying access a static variable located of a super class through an instance of one of it's subclasses and I'm receiving an access of undefined property error (example of which below). Creating another static variable in the subclass and assigning the value from the super class will allow me to dot operate to it.
[Code]....
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Jun 12, 2009
How do tell my parent class to wait for a subclass Timer finish event? Here is my "Timing" subclass:
[Code]...
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Mar 15, 2011
I am trying to access a function that is on my document class for my AS3 project, from a nested class. That is, the Document Class calls Class A which then calls Class B. So I am trying to access a function from Class B, I am trying to use MovieClip(parent).function(); but I am getting error 1120. The MovieClip(parent) (fixed to reflect my document class, etc) works when I try it from other classes but not from this nested class.
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Oct 13, 2011
I'm working on a iPad game in Flash Pro CS5.5 and it was compiling correctly. Now I have marked a lot of MovieClip classes for Export for Actionscript so they use a custom MovieClip subclass as base class.
When publishing the movie I get a SWF without any actionscript in it (publishing takes also a lot less time then before). Now I have a suspicion this is because there seems to be a limit on the number of Export for Actionscript you can have?
The problem is that for iPad I can not split my .fla to create multiple swfs; since swfs that you load via the main document can not have any ActionScript in it (I tried already to put all the sounds in a seperate SWF with export for actionscript turned on, that didn't work).
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Nov 2, 2010
I want to persist the AdvancedDataGrid column order for the user if they move them around and close the window or log out. I have code (see below) that works when I place the code in a grid parent container - eg, a title window. I'd like to generalise the functionality by placing the code in an AdvancedDatagrid subclass rather than each grid container so that all my grids have access to a single location when saving/loading their choices. My approach is to store the datafield names and grid name in an array and save/read to/from the shared object. and update the column order based on that order. The invaldation fails when I use the code in the Advanced Datagrid subclass but works fine in the grid parent.
private function loadSettings(name:String = "custom"):void
{
var gridName:String = this.stripUIDNumbers(this.uid);
var temp:Array = new Array;
[Code].....
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Oct 21, 2010
With MXML components, I've seen a pattern used where you have an AS3 class, then the MXML subclasses it, to have a separation between view/code (anonymized from real code):
package com.john
{
public class MyComponent extends Canvas
{
[code]...
At least I think the MXML component is subclassing the AS3 class?Anyway is it possible/advised to do this with my main MXML application file, so I can put manager instances and things in the AS3 MyApp class, which is subclassed by Main.MXML?
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Aug 25, 2009
i am a bit embarassed to ask this, but i do this so much i have to ask. Occasionally, i need to pass/handle custom events on the fly. Rather than creating a whole custom event class, i will just do something like
Code:
myObject.dispatchEvent(new Event('thisCustomEvent'));
//and then handle it later
[code]....
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Jan 25, 2010
I couldn't work it out yet...
package components {
public class templateSelection extends VBox {
static public var tempSelectionBag:Dictionary;
[Code]....
I want to have a custom class tempSelection with a Dictionary as a public accessable property of that class. If I use this code, the compiler tells me:
1046: Typ wurde nicht gefunden oder war keine Kompilierungszeit- onstante:Dictionary
Which translates to:
Type was not found or was not a compile-time constant: Dictionary
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Jun 22, 2011
I have a Custom Component that has a couple of Canvas with some background colors assigned to them. Now i have hard coded the colors, i want to move them to an external css file. So i would like to have the css declaration like this :
[Code]...
My question is if i can define custom style names like dividerRightColor and if so, how can i use that value inside my MXML Component? I have seen examples of using them inside Pure AS components.
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Mar 8, 2010
I'm trying to access the AchievementScreen's textfield from a medal object. Point being to have a mouseover event of the medal, change the content of the textfield shown. I tried a trace first: trace(this.parent.parent.parent.parent.textLineCon tainer); 1119: Access of possibly undefined property textLineContainer through a reference with static type flash.displayisplayObjectContainer. trace(this.parent.parent.parent.parent) shows me it is a AchievementScreen object. textLineContainer is the instance name of the MC nesting the textfield (I actually drew the achievement screen then exported it to actionscript.
[Code]....
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Mar 15, 2010
Lets say I have a movieclip on the stage.
On the stage on frame 1 I define a variable. Lets say its a string that reads "hello".
Now in my movieclip on stage I am trying to trace that string I defined on frame 1 on the stage. How can I make this happen?
I have tried a few things but I can't seem to get it working right.
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Jul 6, 2011
I'm doing some work with JSON in as3 using as3corelib (very useful) and was wondering if it is possible to get an object if all you have is one of its properties, also an object.Here's an example of some JSON:
ActionScript Code:
"parentObject": {
"propertyObject": {
[code].......
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Jun 8, 2010
Well, I know how to access the loaded swf variables from its parent, but how do I access the parent SWF variables from a loaded SWF?! I'm trying it.. But get no results.
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