ActionScript 2.0 :: [Flash8] Setting Callback Functions On An Object Methods?
Jan 12, 2006
Been doing some actionscript magic lately, done a nice interpolator class. The class, whenever an update occurs, calls a previously specified callback function. Normally, setting a variable of funCallback:Function and calling it works fine. However when I wanted to specify an *object's method* as the callback for the interpolator, it apparently called it as if it would be a static method.
And it isn't.What I need to do, simply speaking, is to be able to call an object's public method, having just th object's reference and function name, just like the second variant of setInterval does ( the one having "object, string" as the first two params, not "function").
View 12 Replies
Similar Posts:
Jun 6, 2010
I have a flash application using callbacks to javascript functions (eg. when it receives some data over a socket, it'll call a js script which would change the content of a div according to that given data).
Afaik, there is no actual mutual exclusion in javascript so I'm not sure if I can/need to simulate something like :
[code]...
So, the question is, when are those callbacks called ? Are they simply queued to be executed right after the browser finishes its task or are they triggered randomly ?
View 1 Replies
Aug 3, 2011
My as3 code ( build in cs5 osX 10.6 ) doesn't work in flash cs5 osX 10.7!
When I store a callback function in a parent class variable the refrence is weak and no more avaiable for other calls!
exemple:
parent class:
-----------------------------
public class Foo
{
protected var _fct:Function;
}
[Code]....
View 1 Replies
Nov 5, 2009
What I get is that you can pass a function to another function as an argument so that the function that you pass to can "call back" that particular function.
All good. However, I'm unclear about a couple things: Why exactly is this beneficial? is this the same thing that the addListenerEvent method does when you pass it a function as an argument for when the event fires?
View 2 Replies
Jul 28, 2011
There are several built-in callback functions in Flash, all of them very useful because they are monitoring events and immediately execute actions. They made us economy in code writings. Unfortunately, there's not enough callback functions that fulfill our particular requirements. For example, there's not such a MovieClip.onFrameReached(n) function, that makes something when the movie clip reaches the frame number n. I must appeal to setInterval function to monitor when the movie clip reach the frame n. I try to avoid using that because I believe it is resource consuming. In ActionScript 2.0, can you create your own callback functions or methods? think about what useful a function I described would be when you work with external swf's in order to synchronize it with other objects.
View 3 Replies
Mar 4, 2010
I am currently doing something like this:
myFunc(tracer);
function tracer(message:String):void{
trace(message);[code]........
Now, this works fine. But how can the function myFunc know, if the given callback function accepts the correct number and type of arguments in its signature?I want to avoid that I call something like this somewhere in my code:
myFunc(tracer2);
function tracer2():void{
trace("done");[code]..........
Is there a way to do something like this, in order to use compiler warnings/error messages and thus avoid exceptions at runtime?
// Won't work :-(
function myFunc(callback(message:String):Function):{
callback("Hello");
}
View 2 Replies
Apr 26, 2009
Im trying to load some data, but I want to outsource the job of data loading to different classes.lets say XMLLoader class will get the url and return an xml file. The problem now is that such procedures are asynchronous, the class has to wait for XML to load and then call back the caller class and return the xml data.One way of doing this, is returning the data with a custom event. once its loaded then dispatch this event with the data in. However, I was wondering, if there is a way to do it with some sort of asynch call, meaning the caller class sends the request, then waits for a response.is such a thing possible? is there a better way or do I need to stick to my custom events?
View 2 Replies
Feb 16, 2005
(How) is it possible to catch an error thrown in a callback function like onConnect of the XMLSocket object?
Code:
var s:XMLSocket = new XMLSocket();
// Will not catch error :-(
try {
[Code]....
View 3 Replies
Feb 16, 2005
(How) is it possible to catch an error thrown in a callback function like onConnect of the XMLSocket object?
Code:
var s:XMLSocket = new XMLSocket();
// Will not catch error
try {
s.onConnect = function(success) {
trace(success);
throw new Error("Unable to connect");
trace("Won't trace, error thrown"); }
s.connect("127.0.0.1",1024); }
catch(e:Error) {
trace(e) }
View 3 Replies
Jun 10, 2009
fileReference.addEventListener(Event.COMPLETE, uploadCompleteHandler);
private function uploadCompleteHandler(event:Event):void {}
Above is one way to add an event listener in Actionscript. By default the callback function needs to have an argument with name event and type Event. Is there a way to declare this function without any arguments :
private function uploadCompleteHandler():void {}
Edit : It's possible to add an event handler without any arguments in mxml. So one student wanted to know, why isn't it possible to do the same in actionscript?
View 2 Replies
Aug 3, 2011
Im going to develop an FLASH App to use an external SWF file as a reference to call its methods & functions.
View 0 Replies
Dec 29, 2010
I have a main actionscript file import other actionscript files into it to use their function. From the tutorials and training videos I have, other external classes apart from the document class always link to an object in the library or an object in the main.as is an instance of the other class, for example:[code]
The problem is I'm not creating any variables from the external class but only want to use the functions from it. When I test the movie, I get error 1180: Call to a possibly undefined method isPossibleNo, which is inside class ProjectileNo that is imported already.So my question is how I can use external functions without creating a new instance of the external class because they only hold calculation functions.
View 2 Replies
Jan 15, 2009
Im new to AS3.[code]I have above code in a movieclip which i have Exported as a Class.But when i run it says "Constructor functions must be instance methods".
View 4 Replies
Jun 14, 2009
I'm using flash and the error message "Constructor functions must be instance methods." appears for the following code:
invsibleBtn.addEventListener(MouseEvent.CLICK,onClick);
function onClick(event:MouseEvent):void { navigateToURL(new URLRequest [URL]New to action script coding.
View 13 Replies
Jun 2, 2011
Which of the following is better in terms of performance/effectiveness?
public var a:int = 0;
public function Addition():void {
a += 5;
[code].....
View 7 Replies
Jul 20, 2010
I am trying to link buttons in Flash to placeholders on the time line, but keep getting this error message, any ideas what it means
View 2 Replies
Jan 29, 2009
i'm attaching clips from library using attachMovie. inside those clips are functions. I'd like to call those functions a few lines after instantiating them using 'attachMovie.' It seems that the clip isn't fully loaded because my functions aren't being called. I tried using movieClip.onLoad, but no dice.
View 1 Replies
Jun 24, 2010
I keep getting that error when i try to compile and the only script I have in it is this:
[Code]...
View 6 Replies
Jul 18, 2010
I am follwoing a tutorial on linda.com about creating a website in Flash everything was going well until i started trying to copy the action script in the online examples now I keep getting this error message and can't figure out how to get rid of it:
[Code]...
View 7 Replies
Jul 6, 2011
My question deals directly with ActionScript 3, although it could possibly appear in other languages. Consider the global trace function found in AS3. Calling the method requires no imports and is globally available from all classes.
class A {
public function A() {
trace("Hello, A!"); // Hello, A!
}}
Now, what if I create my own class method of the same name? In AS3, if I have a class method trace and then make a call to trace elsewhere in my class, the call is made to the class method over the global function. Essentially, I've blocked my ability to call the global trace method.
class B {
public function B() {
trace("Hello, B!"); // no output
} public function trace(s:String):void {
// do something else.
}}
Now, I know the obvious answer is to say, "don't create a class method called trace." But what if I'm unaware of the existence of the global trace function? Or what if I have a desire to "override" or "block" the global function? Is doing so bad programming? Or is this just another example of how AS3 is a poor object oriented language?
View 3 Replies
Nov 22, 2010
How do I write my class so it passes all of its functions/methods to the calling movieclip? For example, the following code imports my graphics class and creates a square:
ActionScript Code:
import sprites.vectorGraphics;
var vGX = new vectorGraphics();
var newSquare = vGX.createVector(this, 'square', 'rectangle', 20, 20, 0xff0000, 1, 0x0000ff, true);
That I'd like to be able to do is this:
ActionScript Code:
import sprites.vectorGraphics;
var newSquare = createVector(this, 'square', 'rectangle', 20, 20, 0xff0000, 1, 0x0000ff, true);
View 3 Replies
Apr 21, 2010
How do I execute callback functions dynamically by passing a function in as an argument to another function?
Look at this example:
Code:
package {
public class myClass extends MovieClip {
public function myClass(callback) {
[code]....
View 2 Replies
Jul 23, 2010
I am trying to figure out how to define a callback to my model object, via the Mate Frameworks LocalEventMap.
<EventHandlers type="{WebServiceEvent.RT_GET}" debug="true">
<HTTPServiceInvoker url="/services/rtGet.asp">
<resultHandlers>
[Code]....
I get essentially the same error if I try to make method="model.rtGetHandleResult"
So, in keeping with the presentation model... how do I have the event map get this to the model to execute?
View 2 Replies
Jul 20, 2011
I am creating an object pool to cache some recyclable objects in memory at the outset of my application in order to avoid (as much as possible) the performance issues caused by GC running; if possible I'd like to minimize the memory my object pool reserves, so I'm attempting to pool generic forms of the objects (with no methods) and then casting the generic variants to more specific and complex object types which extend the generic form when I actually want them on the stage.
The trouble is that to do this requires the generic variant class to import/extend MovieClip (because the more complicated objects are themselves MovieClips and make use of DisplayObject methods)-- does simply importing and/or extending a class add to the memory an object takes up when instantiated even if it never uses methods from the inherited class? It makes sense that it would, and some light profiling seems to suggest that it does, but I'm not 100% certain. About how large should an 'empty' MovieClip instance be in bytes?
View 1 Replies
Dec 25, 2010
Actionscript Code:
if (Key.isDown(attack2Key)&&shot2reload == 0) { for (i=1; i<2+1; i++) { shot2++; shot2reload = 30 var newname =
[code].....
View 1 Replies
May 10, 2008
how I can declare a variable that is retrievable when the browser reloads.
View 7 Replies
Dec 11, 2009
I'm working on writing a tweening class in as2 that has a callback variable and I can't seem to find a good way to get the scope without specifically passing in a scope variable as well. This tweening class needs to work in classes as well as on the timeline. Here's what my codes looks like right now.params.scope[ params.onComplete ]( params.onCompleteParams );params is an object passed into the class. This works but I don't want to have params.scope in there.
View 1 Replies
Jul 11, 2011
My web application pass a javascript object to flex application using addCallback function.
when the flex application is in modal dialog in safari browser, the object in the flex application is null and when I open the flex application just in a new window, the object is passed correctly. But, I need the showmodaldialog to show the flex application.
The flex code:
ExternalInterface.addCallback( "handleEvent", handleEvent );
override public function handleEvent( event:Object ):Object {
Alert.show(String(event)); .....
View 1 Replies
Jun 17, 2009
I'm having some trouble calling a JavaScript function from the HTML file I've embedded my SWF in.I'm currently using Flash 8.I'm trying to to simply call a function which will open an alert window, but when I click my button, nothing happens.
Flash Code:
import flash.external.*;
testbutton.onRelease = function() {
ExternalInterface.call("testAlert", "Yay, it finally worked");
[code]....
View 1 Replies
Sep 20, 2009
basically, each time i hit a letter key on my keyboard, i want a new .swf to load. All of the external .swfs are looped, which is working fine, but for me to get this one to do what it should, i need to press another key to get it to advance to the next frame and play. Since i'm operating it from a loader, i can't get the function to call.
so here's my loader function:
Code:
on (keyPress "e") {
_root.createEmptyMovieClip("container", 1);
// Container's positions on stage
[code]....
View 1 Replies
