ActionScript 3.0 :: Get A Grasp On Dispatching Events?
Nov 22, 2010
I have been trying to get a grasp on dispatching events and have a few questions I am hoping you will all be nice enough to clearify for me.
Do I have to have a custom Event class to dispatch a custom event?
If so do I have to create a new intance of the event each time I want to dispatch an event. Example:
dispatchEvent(new MyEvent(MyEvent.TASK_COMPLETE));
or can I just dispatch an event once an instance has already previously been created.... example: dispatchEvent(MyEvent.TASK_COMPLET);?
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Jul 19, 2009
Im trying to dispatch and event from an XML class.dispatchEvent(new Event (XMLClass.INDEX_CHANGED));and catch it in the display class [code]I know that im missing something because the application works and the function runs but its not dispatching the event the event or maybe it's not catching the event in the display class, even though everything else is working and im not gettin' any errors.
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Dec 15, 2009
package com.services
{
import com.asfusion.mate.events.ResponseEvent;
import com.events.navigation.DesgManagementEvent
import flash.events.EventDispatcher;
import mx.controls.Alert;
[Code]...
I am able to get the result, but not able to dispatch the event from the custom actionScript class. I googled and got the riposte that you need to add it to display list.
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Jun 25, 2010
I have a custom event class public class FFTDrawEvent extends Event {
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[Code]...
Both class (Dispatcher & Listener) are Child class of a MXML application. Also listen to the event in the parent MXML application doens't work. Listen to the event in the dispatching class itself somehow works.
I have to feeling that the EventDispatcher class is not the right one to dispatch events to a mxml application or respectivly AS classes, which extend/inherent from a MXML component class.
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Sep 2, 2010
I want to have a main logic class that listens for dispatched events from an assortment of other classes.
for instance: i have a parent Map class that contains X instances of a State class. When the user clicks on a State class, i want to dispatch an event CLICKED along with the name of the state.
now this Logic class will see this new event and process the name of the state and perform some other logic stuff. no matter what i try i can only get it to work where the State class listens for its own Dispatched event. Which to me seems a waste, i could have just manually called the function.
I have read so many tutorials online about custom events/ dispatching and they are being used in a basic one class example.
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Jul 16, 2009
I have a key.addlistener setup to listen to key events.What I want to be able to do is to dispatch key events by for example a mouse click or just on load. I've tried a lot of possible solutions such as dispatchEvent with type as "onKeyDown" and "keyDown" etc.... but key listener simply do not treat it as a keyboard event.
Code: Select allvar eventObj = new Object();
eventObj.type = "keyDown";
eventObj.code = 13;
eventObj.ascii = 'e';
dispatchEvent(eventObj);
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Jan 22, 2009
I have problems dispatching events from an external swf file.
The class that loads the file only receives the original events of actionscript (for example MouseEvent.CLICK, etc) and ignores others that are dispatched with a own event class or dispatched with a direct string in the type parameter. For example:
dispatchEvent(new PLYPubliEvent(PLYPubliEvent._OVERLAY_OPEN))
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Aug 2, 2011
Basically I am trying to create a string Validator which requests a new language from its controller by dispatching an event upon its creation.
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Here is the example
MyValidator.as
package components
{
import flash.events.Event;
[Code]...
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Nov 7, 2011
is it possible to send data to starling object after var mStarling:Starling = new Starling(StarlingClass, stage); or maybe dispatching event from main class and then listening event in starling class.
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Dec 21, 2011
I have a main application Planner.mxml. This view has a couple of custom components, one of which is LoginView.mxml. In LoginView.mxml I do the following:
protected function btnLoginClick(event:MouseEvent):void
{
try
{
[code]....
As you can see, when the user is successfully logged in, I want to dispatch a custom event; if not, I show an alert box. However, this event doesn't dispatch (or at least, I don't know how to listen for it).
I would like to listen for it in my main application where I can then change my viewstate to the logged-in state. However, the event never seems to get there. I listen for it by having loggedIn="loggedInHandler(event)" on my loginComponent.
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Mar 27, 2011
If i have a html menu, how can i call events within a swf on the same page.?IS this done with java or php?exact example is being used hereclick the nav and see the flash banner change
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Aug 3, 2010
However, it seems to me as I've started building this (or trying, rather) that there's no way this can be done, but I'm sure I'm wrong. Since the static class is never added as an instance to the display list, the stage (or any object for that matter) will never hear any events it dispatches.I've searched and found this, but that doesn't seem to be the right solution since I'm listening for my custom LinkEvent event from the stage, and *not* in the class calling the dispatch function in the static dispatcher class.And to reiterate, the goal is to have a single class I can use throughout my application that dispatches my custom LinkEvent event with two properties: linkURL, and linkTarget.The whole reason for wanting to do this is so I can have some control over what happens (to track, or do some other behavior) when someone clicks on a link created within an htmlText TextField with an <a>
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May 15, 2011
I am dispatching two different events showbutton and removebutton from the code inside the LOADED SWF.on main file, (the one that is loading the swf file) i m listening for events and either showing or removing the buttons based on proper scenario. Here is he error i m getting.
ERROR 1180 Call to a possibly undefined Method Event - - - > dispatchEvent(new Event("showbutton"));
[Code]...
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Jun 23, 2010
I am attempting to dispatch an event on the click of any of the buttons in a button array in the document class of my application. The intent is to have an external object receive this dispatch so as to remove a listener for the EnterFrame event in this class.
Here is the Main.as code (document class):
Code:
package {
import flash.display.*;
import flash.events.*;
public class Main extends Sprite {
private var one:MovieClip;
[Code] .....
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May 5, 2011
`i'have a problem with listening events dispatching from their child classes. for example i have contentManager object which is controlling content at the top level of stage. it has a imageGallery object and in the imageGallery objectthere ise a collectionLoader object which is loading images.
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Feb 16, 2012
I'm curious about event performance. I have a custom class that downloads files from a server and writes to your local system with AIR. This class has a few custom events that fire during a download process: File starts downloading, files finishes downloading, error occurred, progress, and a few others. This class was built for a specific project, but made coupled so it can be used for anything else wanting to download a file from a server. I'm starting to implement it into a new project, and a few events I'm not listening for, such as when the file starts downloading, or the progress of it, just the complete.
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Apr 3, 2009
Would it be possible for me to also dispatch non-custom events (like Event.CHANGE) from inside a class? I already did this with custom events which worked fine, but when I try to dispatch a the Event.CHANGE it will tell me that I am trying to convert a String into an Event (??). What I do is:[code]
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Jul 16, 2009
I have a key.addlistener setup to listen to key events. What I want to be able to do is to dispatch key events by for example a mouse click or just on load. I've tried a lot of possible solutions such as dispatchEvent with type as "onKeyDown" and "keyDown" etc.... but key listener simply do not treat it as a keyboard event.
Code:
var eventObj = new Object();
eventObj.type = "keyDown";
eventObj.code = 13;
eventObj.ascii = 'e';
dispatchEvent(eventObj);
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Jan 5, 2010
I notice in actionscript 3 that when a handler gets called, its able to access the senders properties. If I dispatch an event from my custom class. can all the listeners inherit all my public properties and methods?
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Nov 15, 2011
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In Adobe AIR 1.5, I'm using URLLoader to upload a video in 1 MB chunks. It uploads 1 MB, waits for the Event.COMPLETE event, and then uploads the next chunk. The server-side code knows how to construct the video from these chunks.
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Uploading chunk of size: 1000000
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[Code]....
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Apr 30, 2010
I think this is a pretty simply problem but I do not seem to be able to pull it off. Basically I have a parent class A, and a child class B.Class A instantiates class B with addChild.There is a shared object which is being updated from a java server (red5) that has an event listener attached to it in class A.I have a function in class A which will pass certain, specific updates from this shared object to class B.The problem occurs is that when class B is instantiated, the event listener from class A doesn't work anymore. I have not removed the event listener from A.?
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So, I'm a beginning to intermediate Flash and AS guy grappling with some programming concepts.I find that when I create my own functions from scratch, especially to define a generic function to different movie clips, in this case to their onEnterFrame functions, I get unexpected results.The bottom is some code from a new simple website I'm trying to code. My problem is that I can't get the function working in a generic way. I know I may be taking the completely wrong approach and totally missing something, but I am continuously coming up with problems (seems to be a misunderstading of scope at a deeper level, not simple variable timeline scope, but inherant scope within functions, etc..).So, I will just copy paste the code here and try and comment as much as possible. For claritie's sake I will remove button codes except option1 and option2.
//initialization of a few global and one timeline variable. These should
//be self explanatory in the code so I wont go into to much detail
//my probs arent in the detail but in the overall relationship of the
[code].....
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Sep 15, 2009
I can't make AS2 classes refresh when editing them, in other words, my FLA file doesn't grasp the last version when compiling, I have to shut/restart my flash program for that.
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Feb 5, 2009
I can't seem to grasp the concept of arithmetic in actionscript.
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Jan 11, 2012
Just wanted to ask if there is any advantage for either using mouse click event or touch tap events, when writing apps for mobiles or tablets (for the iphone especially)?
I know that both of them should work fine, but in term of performance, is anyone better? Are there any things I should be aware of when choosing either?
By the way am using actionscript3 to implement the app.
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Sep 30, 2009
I have an animation that I want to start when clicking on the flash window. However, I've also have some buttons on the stage. If I add an event listener for MouseEvent.CLICK on the stage, then it 'eats up' the events and the buttons don't work.
I've tried some tricks, by adding some invisible buttons on top of the real ones, and use the MOUSE_OVER event to selectively enable/disable the mouseEnabled flag for the stage, but didn't work because it complains that the property or method doesn't exist (which I find odd).
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Feb 11, 2012
i have this code from the adobe forum, which works on the first screen of a mobile application. But it doesnt work if i put this code in a new view ( in a view which i have pushed )
<?xml version="1.0" encoding="utf-8"?>
<s:View xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" title="HomeView"
[Code]....
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Feb 24, 2011
I have noticed that using the "addEventListener" and coming back into a frame, I get multiple events tied to the same component.The design I am using jumps to an "I" frame (intermediate) and then back to the "M" frame (main) when the user performs an action.I add event listeners to several components when I enter that M frame. What I notice is that the events seem to stack up for a particular component.
For instance, if I enter M frame, N number of times and addEventListener("click", handleEvent) to a radio button, I get N calls to handleEvent when the user clicks on the radio button. I guess this kinda makes sense but is not what I want. I just want one event of a particular type (in this case "click") to be associated with the a particular component. I get around this issue by removing the event(s) in the I frame. Then they get reinstalled in the M frame. Only one at a time.
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Dec 26, 2011
I am designing a music player using JavaScript (jQuery) and HTML5, with Flash AS3 to fall back. Basically what I want to do is to be able to click HTML control elements and have them interact with the flash in order to play/pause and skip tracks in the playlist (playlist JSON file read by JavaScript, passes file ID to AS3, AS3 reads another JSON file to get URL, then plays audio)
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