I usually use if(object!=null) but it doesn't work well.
How can I verify if the class is instantiated. I want to get rid of the 'cannot access a property of a null object or reference'.
I mean, the 'var object:Object;' is just a reference to an Object class instance. When i initialize it with 'object = new Object()' it runs the code in the constructor, initializing it. How can I check if it has been initialized or not.
I have question regarding removing instantiated objects. Let's say i have a main class in which i instantiate a custom video player (or whatever) class:
Code:
...
var videoPlayer = new VideoPlayer(...);
addChild(videoPlayer);
...
And inside VideoPlayer class i have of course dozens of objects (movie clips, sprites representing different parts of VideoPlayer) and dozens of event listeners attached to them. My question is, if i want to remove this VideoPlayer class from my main class is it enough to just do:
[Code]...
I have a initApp.as which instantiates a class which needs to access the "currentState" property and the States array as well. However we cannot get this to work as we cannot see how we can access this information.
Within initApp.as currentState is accessed via "this.currentState". This does not work in the class which is instatiated within initApp.as. The following error is thrown:
"Access of undefined property currentState."
I'm wondering if anyone has experience with if there is a big difference in performance in ActionScript 3 between keeping a class with only public static functions, and utilizing those functions often (as in a frame event at 30fps), and in turning the class into a "normal" class of which I instead make an instance and call the functions via the instance instead.
View 1 RepliesI am making my way with AS3 in little steps and have hit a road block. This is what I have:
I have a document class called "Document Class" I have a custom class called "Game"
I have instantiated an object of "Game" class and I am able to trace a class method which return a simple "HELLO". within my Game class, I have a variable(type Array) called "questions" as instance variable.
I would like to add questions to "questions" array by using "Mutator" method, or count the current elements with the questions array and return the total number of questions. I am unable to add or access elements to the questions array.
I've been struggling with this for almost a day now and I can't seem to find the problem. I'm making an instantiated FLV playback class in actionscript 2, but it just doesn't play the video
Here's the code, if I uncomment the camera parts and attach _cam instead of _stream it will show the camera feed, it just won't play my movie (and I get no errors whatsoever).
[Code]...
I know how to do this in as3, it's easy.
var c:myclass = new myclass();
addchild(c);
how the heck do you do this in as2?
Im trying to get the value of the textWidth property in class Main from a text field created in an instantiated class Label. When I trace the value from within the Label class I have access to the values. I'm trying to use a get function to pass the value to the main class.[code]
View 3 RepliesCan you do this in AS3?
function onLoadMe(e){
};
var pic:Picture = new Picture; // custom dynamic class with a method called onLoadPIc
pic.onLoadPIc = onLoadMe; i'm trying to change the method of my custom class on the fly for this instance...
I have this class called Main. And inside this Main class I have a method that I'd like to call from a the main timeline.
So on the main timeline I have instatiate the Main class like this:
var mainClass:Class = flash.utils.getDefinitionByName("Main") as Class;
var main:Sprite = new mainClass(this, mc1_mc, mc2_mc);
addChild(main);
Then on the frame after that, I try to access a function inside that Class like this:
main.prepareGame();
But I get this error:
Scene 1, Layer 'Layer 2', Frame 3, Line 61061: Call to a possibly undefined method prepareGame through a reference with static type flash.display:Sprite.
I'm very confused. When I instantiate a class, I'm assuming that the object is reset to its default variable values. Not so. Consider this:
Code:
class ClassTest extends MovieClip{
var arr:Array = new Array();
function ClassTest(){
[Code].....
...even if the two objects have different instance names! It's as if it is making my arr variable static by default, and not resetting it to a new array in the second instance. How do I get around this? Do I need to somehow have this code instantiate itself with something like "this = new ClassTest();"
h1. I have a Class (let's call it "Button") that is linked to a library item (a movieclip) which I have on the stage
2. Now this Button class, when clicked will produce an alert in the form of another class (let's call it "Alert").
3. There are two critical things in the way I want this to work:
A) I want Alert to be a child of the main stage, not the Button class
B) I want Alert to take care of adding itself to the display list, not have Button add it.
So in a nutshell, I want to call Alert like this:new Alert("Hello, Kirupa Forums!");
The Alert class needs to draw the shape (check), add the text (check), add itself to the display list (how? if I try to access "stage" I get a null reference, though I don't know why), and destroy itself (I'll burn that bridge when I get to it).
What I'd like to do is add an event listener to a class instantiated by my document class that listens for different key presses. So far I can't use stage.addeventListener or I get the null object error so my question is:
a: how do i add an event listener to the stage from another class and b: is it even necessary to add it to the stage , can I listen from that class?
I have a class called shapeC that only creates a rectangle and then addChild(rectangle);. That class is instantiated on the main timeline. Currently, the only way you can see that rectangle is to add the instantiated class to the stage via addChild(shapeC);. My question is, is there a way that the shapeC class can add the rectangle to the root stage without requireing the instantiated class to be added to the stage?
View 4 RepliesI have an XML file which has info about projects for my portfolio, there are 7 of them at the moment. I'm trying to have a preloader animation show up in place of every portfolio image before it's shown on stage. The problem is that there are 14 of those preloaders being instantiated rather than 7!! How could that be possible? Check out my code:
ActionScript Code:
package {
//import com.prodoubled.XMLLoader;
import flash.display.Loader;
[code]...
I have a mc in my library called SimpleButton and in the class path for that mc I have the path to my class: com.company.ui.buttons.SimpleButton.
But when I try to instantiate the symbol using the following code, it does not appear on the stage.
Code:
var simpleButton = new SimpleButton();
addChild(simpleButton);
The code works fine when the mc class path is just SimpleButton, the symbol is added to the stage. However when I try to use my own class, the base class disappears from the linkage box in the mc properties dialog and the symbol does not appear on the stage.
Here is my SimpleButton class:
Code:
package com.company.ui.buttons
{
import flash.display.DisplayObject;
[Code].....
In my document class I have this
[Code]....
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:
[Code]....
I have a class with constructor and overloaded methods in it. When i try to import that class using blazeds i get an error saying [RPC Fault faultString="Unable to create a new instance of type 'some class'." faultCode="Server.ResourceUnavailable" faultDetail="Types cannot be instantiated without a public, no arguments constructor."] How to import class having overloaded methods using blazeds
View 1 RepliesI have a program where I have multiple classes derived from a base class. I want to take all instances of the different subclasses and put them into an array. Is there a way I can search for anything derived from the base class?For example, right now a get the number of children, then see what they are, so:
for (var i = 0; i < this.getNumChildren(); i++)
{
if (i is "type")
[code].....
I have some experience working with Flex but im feel clueless working with flash pro. My problem is that i found a flash project that i want to edit (.fla), this project contain an actionscript class in some part that i am unable to find. How to find a class in Flash Professional?. I know that the class exist in the project because i generate a swf file and decompile it and it show the class.
View 2 Replieswhen I create a new flash project, I would like to put the source files in /src/ folder.When I try to add the base class to my project, flash can't find it.I've added the folder "src/" to source paths, in flash preferences.
View 2 RepliesC:alexflashportfolioimagesDualGallery.as, Line 15001: The name of package 'portfolio.images' does not reflect the location of this file. Please change the package definition's name inside this file, or move the file. C:alexflashportfolioimagesDualGallery.as
My class file is located here: C:alexflashportfolioimagesDualGallery.as
My class file is defined as:
package portfolio.images
{.....
My FLA is importing it as :
import portfolio.images.DualGallery;
Normally I use portfolio.classes and I have no trouble. My AS3 prefs are set to the alexflash folder.
I have a App.fla file on a path and a App.as file on the same path. On the Class field I put "App" and on the ActionScript Settings Source path there is "." which means the same path of the .fla file, right? I open the App.fla file and click on the little "pencil" icon in order to edit App.as but then Flash whether tells me there's no class file associated or it opens a new ActionScript file.
So I can't do nothing , I even copied all code into the App.as , and pasted into the new ActionScript file it generates when I click the little pencil button. It still cannot find the god damned class. A little detail, I'm using Mac OS X 10.6.2. I've been working full time with flash on a Windows and that never happened to me before. That hasn't happend to me on Mac either (though I have hardly used it to do FLASH/AS).
I am trying to build my first flash facebook app, using the "flash facebook cookbook". Its instructions are all for flash builder and I am using flash pro. I've downloaded the flash facebook graph apk, and connected the swc, but when I try to login I need to return a FacebookSession object and I keep getting an error message that it can't find the class.
I import the:
import com.facebook.graph.Facebook;
But it's as if the swc connection didn't work.
im getting an error message that flash cant find the base class. i put the as file and the fla file in the same folder, isnt that the first place in the classpath?
View 1 RepliesI am loading a swf, "ImageEdit" into another swf, "Shell". I instantiate ImageEdit with
var ClassReference:Class=imageEditApplicationDomain.getDefinition("ImageEdit") as Class;
var instance:MovieClip=new ClassReference();
However, I get an error:
[code].....
I have an MC instantiated as "menu", and inside "menu" there are MCs instantiated with the names of their pages. I'm trying to define a function for each of these MCs on the main timeline and what I did was as follows (party is the name of one of those MCs that are inside the MC menu):
[Code]...
PHP Code:
public class Fruit extends MovieClip {
//something
}
var apple:Fruit = new Fruit ();
[code]...
Is there a way to find the class of apple without using (apple is Fruit)? Doing it that way takes an array and having to check it with each index of that array to see if it matches.
I'll be working along on a project, using a Document class, adding new functionality, then all of a sudden I make a change in a class file, and my Root FLA can't find my doc class. Nothing has changed in my folder structure, I haven't changed my FLA or the doc class in weeks, but now suddenly I can't link to it anymore. I try changing the file names, and re linking, no luck. In the end I have to make copies of the entire project folder, rename things again, create a new .as file for the doc class and copy all my code into it.
View 4 RepliesIs there a way to search for symbols by the class they are using? I have a large projectand at times (specifically when refactoring)
View 2 Replies