Yesterday I found myself wondering, what is the difference between either having a class with methods that are all static, or simply giving your class the static attribute?
View 9 RepliesI have a question about classes. I just learn that static means that functions and/or properties are specifics to a class, but is it a synonym of private? And why statics (not available to any instances?) properties and/or methods can have a public (available anywhere else (timeline)) access modifier? PS: I just start with classes.
View 6 RepliesIf I created a static method. say I decide to call on other methods within that static method. Do those methods I call on need to be static as well? what If I used some of the properties. Not to store data permanently, but just within that process. Do those properties need to be static ??
View 3 RepliesI'm kind off oblivious as to what I'm doing wrong here... I have two classes: - Alley - AlleyCat
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i got an error in AS.1042: The this keyword can not be used in static methods. It can only be used in instance methods, function closures, and global code.this is the error line.public static var defaultEase:Function = this.easeOut;
View 6 RepliesI have tried declaring an interface with static methods, but I'm getting an error:
PHP Code: 1157: Interface members cannot be declared public, private, protected, or internal.
I have about 3 different classes I'd like to implement this interface and there are only two static methods that I want to define. If I remove the public and static keywords in my interface, they must also be removed from the classes or it complains about that:
PHP Code:1044: Interface method serialize in namespace net.foo:MyInterface not implemented by class net.foo:MyClass.
So I guess I should just dispense with the interface?
I'm working on a video player and I initially developed the player with everything in the .FLA file with no classes. Then I started modularizing my player into classes and realised that my classes are static methods rather than instance methods which doesn't seem to be needed in my player. My question is - is this a bad design to have all of your classes methods to be static rather than instance methods ? As I dont see the need (yet) so that's why i geared more towards static methods, is this a bad design?
View 1 RepliesI am writing class that extends adobe air PNGEncoder,
I want to use the writeChunk method, but it seems to be private static and i cant seems to use it with my code But it gives the error as below
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changed one of my methods to static and it worked for what I was trying to do but I would like to know what is the difference between static and instance method.
What is the difference between static and instance methods?
This has been a long-standing curiosity of mine, and I haven't gotten around to profiling to find out, and haven't seen it asked yet (for AS3):Let's say that I have a class:
class MyClass {
public function myMethod():String {
return "some return value";
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1.Is there any way to access the private data members of a class in action script using asmock framework? I tried using syntax likeContentPlayermockContentPlayer;Where in getContentPlayer is a private member and mockContentPlayer is alias am creating, but its not working well, I doubt whether I can do like this?
View 2 Replieshow bad is this practice? I am having trouble getting to some stuff so i am taking the easy way out
Code:
private static var _interrupted:Boolean;
public static function setInterrupted(value:Boolean):void{
_interrupted = value;
}
Let's say you have the following situation:
1. Static var(an Array) stored in a class.
2. You create a variable reference to the static class in a separate class.
3. Splice some items from the reference variable in the separate class.
4. Trace the static class and the items have been removed from that too.
5. Verify several times.
6. Get confused.
7. Post on Kirupa.
Ok, so I have a bit of a mess here (Which I'm probably not doing right anyway, which could be my problem...). I have a document class, I'll call it as Body.as, that creates an object from another class known as Headgear.as. There are also other objects created from other classes, or will be in the future. Now, amoung all this, Headgear.as and all of the other classes Body.as will use to make objects require the use of dragging functions (starting and stopping dragging). On stopping drags, position checks are then made to compare a particular hidden movieclip with the dragged MC.
To try and save myself some hassle (from making the same functions over and over to ensuring that when the objects are created I don't need to send a complete crapload of variables just to ensure the position checking function would work), I had the functions for the event listeners (Which are set-up on the draggable MCs in Headgear.as) just direct to functions in Body.as
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At the moment, my main classes game variable, is static, so I can access any class in the game, from any class in the game. However I keep getting errors related to the fact it is static; is there any alternative to this?
View 5 RepliesAlright, so I have a class that is linked (via the linkage panel) to a scrollbox class. I'll paste the class here:[code]Ignoring the formatting, the commented out functions are the ones causing the issue. Adobe says that it's a static class and I can't use non-static functions. The way I wanted to use it was:
1. Call the page button generating function above.
2. In the main code in my program is this line:scrollbox.setClickFunction(historyContent.generate Page);So when the buttons that are supposed to be generated are clicked, the scrollbox class can call the History pages generatePage function and pass it which page to show. (I did this because there was a lot of text and a limit on how much would display, so small chunks sounded logical).
3. In the onClick function (which I haven't finished yet because the rest wont work), when you click one of the buttons it calls the set function. Its that simple.
I have a Flash application that creates a sort of powerpoint presentation. All the 'slides' are stored in an XML files which is read and processed.
I'm trying to build the presentation using this XML file. At the moment, my main class has it's initial function main and a static function processXML main initiates my database class with a function called initDB. One of my issues is that initDB forgoes processing because it's dependant on an event listener. On completion of loading the XML files, the event listener initiates my static function on my main to create objects from this file.
The issue is that because the event listener continues the processing (after an indeterminate amount of time), the functions are no longer controlled by the main class.
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How do Static classes work in projects where child swf's use the same Static class as their parent?
For simplicity... lets say we have some older content swf files that are using TweenLite version 8 ( a common enough Static class.) But the parent SWF is being updated and uses a more recent version of TweenLite (version 10). The child SWF's are loaded into the parent SWF. Do the child SWF exist in there own sandbox and have TweenLite version 8 running and the Parent runs it's own copy of TweenLite 10? Or does the parents clips Static class of TweenLite (version 10) overwrite the children Static class using some sort of magical shared memory space when JIT (runtime) compiling?
I've rarely used static variables or methods when creating external classes, but I have on occasion, and it's very useful when I need global access to a value. I've seen negative criticism on the use of the "static" keyword, but never understood why. Is there a right and wrong way of using it, or is this not true? I'd like to use it in a context similar to classes such as MouseEvent or TextFieldAutoSize, where there is a list of values globally accessible for identification purposes.
It allows better code readability, and also allows for easy customization in the future. The value of TextFieldAutoSize.NONE is "none", but as long as a programmer used the reference TextFieldAutoSize.NONE and not the string literal "none", Adobe could change the value of TextFieldAutoSize.NONE to be "hahahahaha" and everything would still work just dandy because (TextFieldAutoSize.NONE == TextFieldAutoSize.NONE) is still true even though ("none" == "hahahahaha") is not.
Is there any kind of negative impact on using static variables this way? Or even functions for that matter? I'd just like to clarify this before I go and build a large project around the idea this is perfectly okay.
I load many classes in at runtime from external SWF's, accessing those classes is pretty simple, like so -
var currentDomain:ApplicationDomain = ApplicationDomain.currentDomain;
var modelClass:Class = currentDomain.getDefinition(className) as Class;
var model:Model3D = new modelClass();
However I've never tried to access static functions from a runtime class, and now I need to. How is it done? It seems like something that should be simple, but I haven't worked it out yet.
Is there any way to override static functions of Flash top level classes? Lets take Stage or Math for example. What if we want to change Stage.addListener functionality, is there any solution to this problem?
View 3 Repliesi'm trying to learn about clases, and i tried to make an easy XML loader, but i gotta a problem with the attributes that doen't take the value i provide with the att variable. it shows me on the trace statement like undefined, and for example if i change the atrribute instead of being dynamic, to be static, it does work.
Code:
class XMLS {
function XMLS(Path:String, textfield:TextField, att:String, n:Number) {
var miXML:XML = new XML();[code].....
This .as file was working fine yesterday and now Im getting this error.
View 3 RepliesI have two custom classes in the same package - sGallery and vChange - within sGallery how can I call a function thats inside vChange?
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but gave me error: 1119: Access of possibly undefined property doWork through a reference with static type Class.
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I have a site with ScrollPanes, that are calling a Class on what to display. (so the movieclip that I want displayed in the ScrollPane has a Class name.) Within that movieclip (webScroll) that is being displayed in the scrollpane, I have 2 other movieclips (web1 & web2), with unique instance names and eventlisteners targeting those instances. when I preview my site, i get this error: 1119: Access of possibly undefined property web2 through a reference with static type Class.
View 1 Repliesthis is the function i want to turn in to a static function. just dont know how to make it a static function and call it from other classes. i think this would have its own file.
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Basically, what I mean is I i have few layers of classes, that calls and change something on the 1st(root) class. In between the process I have to use static var and static function.But when I want to run a function which does not change any variables, for example:otoAndStop(someFrames), I need to make the function a static function too or else there would be error
Code:
1061: Call to a possibly undefined method checkStatus through a reference with static type Class.
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I know it's possible i saw it on several websites does some one know how i can use a static text in preloader counting to 100%? For an example look at ILOVETECHNO.BE The preloader a heart use a static text i think it cannot be a dynamic text because the font is not a normal average one
View 1 RepliesI want to create a game using pure AS in FlashDevelop.
The problem is that there are some methods I want to use, and because I don't like copying/pasting code, i decided to define in classes. Here is an example:
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When I hit compile, I get an error like Call to a possibly undefined method distance through a refference with static type Class.
Is there a way in AS 3 to list all classes and their associated methods? Or at least a way to list the methods within a particular class?
It seems that it's all so overwhelming and although I'm well versed in Lingo and have a handle on the Lingo dictionary,I feel as though the AS 3 library is dauntingly big.