Arrays :: Accessing Variable From Other Class Returns Null
May 10, 2011
I did a separate levelData class to be able to flexibly add levels. I was happy with it until my supervisor ordered me to convert my levelData into XML. I did an XML version of the levelData's data (question, answers, correct answer...). I used the old class and converted it so that it fetches the XML.
All seems well, I did traces of my answers array and it printed nicely...
But the headache started when I tried this.
// This code appears in a different class with
// currentLvl:LevelData initialized in the constructor.
quizHolder.ansA.ansHud.text = currentLvl.choices[1];
[Code].....
LevelData Class in PasteBin: [URL]
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May 2, 2008
So I dived into AS3 and decided to create an XML Loader class.
Code:
package
{
import flash.events.Event;
[Code].....
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Sep 7, 2011
I am trying to call a method that has some xml functionality and It keeps coming up null.What I am trying to do is; I have a page that has four dynamic text fields that get their content from an xml file. I would like to create a method that will output the contents to display in the dynamic field. Maybe my approach is WAY off here, but my supervisor wants all xml related tasks contained in a xml.as fileMain.as
package classes
{
import flash.display.*;
[code]....
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Jul 15, 2010
I have a mediator that I've registered for a navigation page:
facade.registerMediator(new NavPageMediator(viewComponent));
I'm trying to retrieve that mediator on another page like so:
var navPageMediator:NavPageMediator = facade.retrieveMediator(NavPageMediator.NAME) as NavPageMediator;
However, that statement returns null. If I try to cast it using the NavPageMediator(facade.retrieveMediator(NavPageMediator.NAME)) syntax instead, I get a TypeError: Error #1034: Type Coercion failed: cannot convert com.website.mvc.view.page::NavPageMediator@237560a1 to com.website.mvc.view.page.NavPageMediator.`
I can't, for the life of me, understand why NavPageMediator@237560a1 would be unable to convert to NavPageMediator, nor what happened in between registering the mediator and retrieving it that caused this. Especially since trace(new NavPageMediator() as NavPageMediator); returns [object NavPageMediator].
Incidentally, and this may be part of my problem, I don't understand what the @hash at the end of the object is (@237560a1). Is it simply an internal identifier for that class instance?
Edit:Left a bit of important info: The SWF in which I instantiate and register the mediator is separate from the SWF in which I try to retrieve it.
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Feb 19, 2010
I realize this is kind of an odd issue, but I am wondering if there's any way to get Flash to allow me to access a class's static functions using a class variable that points to the class. Example:I create a class called FooClass that has a static function named fooI then create a variable of type Class that points to it
Code:
var class:Class = Class(getDefinitionByName("FooClass"));
However, when I try to call foo() using the variable, it errors saying the function
[code].....
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Mar 14, 2011
I've only been programming in as3 for a couple months, and so far I've written several compositional classes that take MovieClips as inputs to handle behaviors and interactions in a simple game I'm creating. One problem I keep coming upon is that I'd love to access the custom variables I define within one class from another class. In the game I'm creating, Main.as is my document class, from which I invoke a class called 'Level1.as' which invokes all the other classes I've written.Below I've pasted my class 'DieLikeThePhishes'. For example, I would love to know the syntax for accessing the boolean variable 'phish1BeenHit' (line 31) from another class. I've tried the dot syntax you would use to access a MovieClip inside another MovieClip and it doesn't seem to be working for me.[code]
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Mar 14, 2011
I've only been programming in as3 for a couple months, and so far I've written several compositional classes that take MovieClips as inputs to handle behaviors and interactions in a simple game I'm creating. One problem I keep coming upon is that I'd love to access the custom variables I define within one class from another class. In the game I'm creating, Main.as is my document class, from which I invoke a class called 'Level1.as' which invokes all the other classes I've written.Below I've pasted my class 'DieLikeThePhishes'. For example, I would love to know the syntax for accessing the boolean variable 'phish1BeenHit' (line 31) from another class. I've tried the dot syntax you would use to access a MovieClip inside another MovieClip and it doesn't seem to be working for me
package jab.enemy
{
import flash.display.MovieClip;
[code].....
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Mar 11, 2009
I have an array in my doc class that I'd like to access from an external class. Can you do this and if so what's the syntax?
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Jul 21, 2010
would it be possible to access a variable name containing a class from the class itself?
Example:
Code:
var __NAME__ = new TestClass();
package com.Test
{
[Code]...
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Jan 4, 2011
I'm having trouble setting up my Ball class so I can set a variable which I can then access in another class later. I'm under the impression you can only do this with a public static var, but when I try to make my variable public static the code doesn't work.
[Code].....
the code checks where the balls are on the screen and moves them onto the square. I want to set a string variable for the direction its moving eg. "right" for the ball that's moving right. I'm not sure how to access this in another class.
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Jan 4, 2011
I'm having trouble setting up my Ball class so I can set a variable which I can then access in another class later. I'm under the impression you can only do this with a public static var, but when I try to make my variable public static the code doesn't work.
Code:
Select allpackage {
import flash.display.MovieClip;
import flash.events.Event;
public class Ball extends MovieClip {
public var _startX:uint;
public var _startY:uint;
[Code] .....
The code checks where the balls are on the screen and moves them onto the square. I want to set a string variable for the direction its moving eg. "right" for the ball that's moving right. I'm not sure how to access this in another class. Here is a pic of the screen to visualize.
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Mar 2, 2011
trying to cut text field to single letters and then do some animations on each letter. But, how do I know where to place (position) the letters? I tried using getCharBoundaries but once it reaches 3rd line, it keeps returning null values. Anybody knows why that happens
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Apr 25, 2011
I've got an object inside an object. The child object basically loads a variable from SQL into one of it's own public variables. The SQL works 100%, because it traces out correctly.Now I've wrote a function from the child.as
Code:
public get_var() : String
{
return var_yes_friggin_work;[code].....;
Of course the files arn't called Parent.as and Child.as I've just had to rename them because our work is monitored though checking the internet and I can't delete this form.The FilePathOriginal doesn't output anything unless the string is manually set from the child, does anyone know where I'm going wrong here? (I can't upload all my code because of the monoriting process)
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Apr 9, 2011
I have a class that creates an array from a config xml file. I set a private variable in that class and use a getter in other classes to access the array. The routine that uses the array does the following:
- Call the getter and assign the returned value to a local (private) variable tmpArray. the getter is a simple return() using a value that is established in the constructor.
- Uses a for loop to itterate over the contents
- Uses array.shift() to pop the item in tmpArray
The next time I run the routine, the contents of the array is empty. I'm using the same getter. I implemented the getter when I tried to manage both arrays in the same class figuring that as long as the original array was private (i also tried static), that the value would not change. I have since worked around the problem by moving the routine that fills up the original value from the constructor to the getter. So, consider the following code:
import flash.events.Event;
btn.addEventListener("click", btnHandler);
var myArray = new Array();
var myTmpArray = new Array()
myArray = ["one", "two", "three"];
myTmpArray = myArray;
function btnHandler(evt:Event) {
[Code] .....
If I create a variable myVar and set it to 1 then set myOtherVar = myVar, the both equal the same value. If I change the value of myOtherVar, myVar is not affected. But using the shift() method changes both the original and the copied array.
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May 24, 2011
On the stage I have a movieclip by the name of rect_mc. Inside it have have a MovieClip square_mc.In the time line that I get when I double click on rect_mc (timeline of rect_mc) I have written the following code
var width1:Number;
width1 = sqaure_mc.width;
How can I access width1 from the document class?The thing that I want to is access the variable declared (width1) in the timeline of rect_mc. Just for the sake of a example only I choose the width of MovieClip.My doubt is how can access a variable declared inside the timeline of rect_mc from the document class. It could be any variable.My document class is:
package
{
import flash.display.MovieClip[code]....
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May 31, 2011
I want to find out whether my swf was loaded locally or from another swf. For this purpose I have declared a variable 'parentType' in my fla. var parentType:String = String(parent); There is a function in the document class that determines whether swf was loaded locally or from another swf. The name of the function in the document class is 'externalOrInternal'. The varaible parentType is passed as a parameter to the function externalOrInternal externalOrInternal(parentType); The name of the document class is Main. In the constructor of Main I have the function pollResize() (the use of this function is to listen for the resizing event. That part of the code is not shown in the snippet given below).
[Code]...
I see that swfParentType is has value insde the function externalOrInternal. My doubt is why null is traced inside the function pollResize. Why is it not [object Stage] as inside externalOrInternal. Due to this I am not able proceed further with the stage resizing event.What needs to be done so that proper value is traced in the function pollResize.
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Jun 15, 2010
I've made a custom sound class:
ActionScript Code:
package {
import flash.events.Event;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.media.SoundTransform;
[Code] .....
What I would like that class do is to trace a variable that is on Main.as which is Document Class, after a sound completed playing.
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Dec 20, 2010
I have a class, the relevant parts of which are defined as follows:
class myClass extends MovieClip {
public function myfunc() {
trace( "mainVar: " + _root.mainVar );
}
}
As you can see, I want to access the variable "mainVar", which exists in the main movie, from within the class. This works fine, if I have only one instance of the class. But, if I have more than one instance, within separate movie clips, the value of mainVar is always taken from the first instance. How do I refer to the actual instance from within the class?
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Jun 2, 2011
Here's my main class:
Code:
package
{
import flash.external.ExternalInterface;
[Code]....
Basically the class waits for the callback variable (my_msg). The problem is: I need to set the dynamic textbox text to my_msg variable.
How can I access it? I know I can access a public var in the timeline with functioname.variable but I can't define a public var inside a function, right?
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May 18, 2010
I'm was getting good with as2 but recently made the mind switch from, I'll learn as3 tomorrow to as3 is awesome. The problem for me is that I don't understand the scope for classes. I know I can trace a variable on the main time line when the var is declared in the class. But how do you access a main time line var from a class? Here's an example - main time line Monkey.fla
Code:
var cagedMonkies:int = 10;
var monkeyTransport:MovieClip = new CarTrunk();
[Code]....
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Aug 12, 2009
I have an ArrayCollection with following structure (when viewed in debug mode):
[0]
- [0]
-- src
- [1]
-- src
src is the path to an image.
I need to get all of the src's out of the arraycollection. However because of the first (unnamed) node I can't take them in. I've tried ArrayCollection[0].children and save the result in another ArrayCollection, however the new ArrayCollection has 2 Objects in it but no 'src'. There are just 2 null objects
firstArrayCollection is filled with the data as described above.
secondArrayCollection.addItem(firstArrayCollection[0].children);
When viewing the content of secondArrayCollection i see following structure (and data):
[0] null
[1] null
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Feb 27, 2012
I'm trying to implement Gravity from GraniteDS. I did everything like in example from GraniteDS website, but when I'm trying to get gravity from servlet context, ravityManager.getGravity returns null. Here is the code: Gravity gravity = GravityManager.getGravity(contextManager.getServletContext());What can be the reason of this error?
UPD:
From web.xml:
<servlet>
[code].....
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Oct 29, 2009
I have created a Composite Pattern type structure, with TreeNodes and TreeLeaf Objects.I works fine, except when I seach in the treestructure for TreeNodes and TreeLeafs in a resurve function with a loop, the function returns null - even on a successfull match.
public function traceTree(inComponent : TreeComponent = null) : TreeComponent{
var parentComponent : TreeComponent = inComponent;
if(inComponent == null){
[code]........
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Jul 25, 2010
ActionScript Code:
public function draw():Card{
return deck.pop(); //deck = array of Card
}
Does not work. Firstly it runs an error which says
"cannot convert [] to Card"...
Shouldn't it pop() return just ONE element?
Then I correct like this
ActionScript Code:
public function draw():Card{
return deck.pop() as Card;
//deck = array of Card
}
And now I get no errors but the function returns null.... why? If I try this:
ActionScript Code:
public function draw():void{
trace(deck.pop());
//deck = array of Card
}
It prints [Object Card] which is how it should be ....
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Feb 2, 2011
I'm making a list of alarms to pick from. I've googled for answers the past two days but I cannot figure out what my problem is with this batch of code.
I've got 7 items in the menu and the dropdown works good as long as you do not select the item that is already displayed in the menu. You can select another item and then reselect the original item, but I get error "Cannot access a property or method of a null object reference." from
[Code]...
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Aug 13, 2010
I have a small issue, which is important for my project though. Namely my global var returns null when I need it. I have a global var class:
Code:
package {
public class Global {
public static var premiseGlobalName:String = new String();
}}
In another class I'm setting this var like so:
Code:
public function onButtonRollOver (event:MouseEvent):void {
Global.premiseGlobalName = "My home";
this.addChild(premiseMenu);
}
The second line in the method calls another class to the stage which uses the global var. I trace the global var:
Code:
public function initPremiseMenu():void {
trace("GLOBAL: " + Global.premiseGlobalName);
}
But it returns an empty value.
I want to use the global var in a textfield like so:
Code:
premiseTip.text = Global.premiseGlobalName;
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Jun 2, 2011
Here's my main class:
[code]...
in the timeline I have a dynamic text box named my_textbox: var my_test:main = new main(); my_test.check_DVBViewer(); my_textbox.text = ??Basically the class waits for the callback variable (my_msg). The problem is: I need to set the dynamic textbox text to my_msg variable. How can I access it? I know I can access a public var in the timeline with functioname.variable but I can't define a public var inside a function, right?
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Oct 9, 2009
I have loaded an XML file in the class LoadXML and have here created a method which parses the data and returns various arrays: an array of background urls (i called the array: hintergrund[]), an array of image paths (pfad[]), an array of website urls (website[]) and so forth. In the main class I would now like to load the backgrounds and images. I must have made a mistake in my onBackgrLoad() because I keep receiving the error msg:Error #1084: Syntax error: expecting rightparen before colon.Here are the relevant sections in my Main class:
package { import flash.display.Sprite; import flash.net.*; import flash.display.*; import flash.events.*; import flash.display.Loader; import flash.filters.DropShadowFilter; import flash.net.URLRequest; import flash.text.*;// import de.container.text.Container_Text; // To
[code]....
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Jul 6, 2009
private function getFriends(thisSession:Facebook):void {
getFr = new GetFriends();
var thisCall:FacebookCall;
thisCall = thisSession.post(getFr);
[Code] .....
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Jul 3, 2009
I have an app where I am looking to make the enter key act like a tab key. I can easily capture the keypress event and setFocus to a textinput field. The problem is figuring out which textinput field to give focus to. I have this code
trace(this.window.focusManager);
//returns TheWindow86.focusManager
trace(this.window.focusManager.getNextFocusManagerComponent());
//returns null
//This is what I was hoping would work
this.window.focusManager.getNextFocusManagerComponent().setFocus();
The code is in a controller class and "this.window" references an instance of a nativeWindow mxml file "TheWindow.mxml". The first trace works as expected, but the second one gives null.
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