ActionScript 3.0 :: Events Firing Before Listener Is Set
Nov 18, 2009
I keep running into problems where I want to add an event listener onto a class instance RIGHT after it's instantiated, like this:
Code:
storiesXML = new XML(XMLdata);
storyBook = new vStories(XML(storiesXML.stories));
storyBook.addEventListener("storyBookLoaded", storyBookLoaded);
. . .
But by the time we arrive at the third line, the "storyBookLoaded" event has very often (inconsistent) already been dispatched from my class instance:
Code:
var evt:Event = new Event("storyBookLoaded", true, false);
dispatchEvent( evt );
...
(Even though quite a lot has happened in the class before that.) To be clear, I don't want to add storyBook as a display child, and even if I did, the addChild() method would have to be called after instantiation of storyBook, so we'd have the same problem. I know I could set a timer in the vStories class to artificially delay the dispatching of the event, but that seems really hack-ish, and would have a real compounding problem if I have to do it too often as everything builds up. How to make sure custom communication events happen after their listeners are set?
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Jan 16, 2010
I am loading an external image into a movieclip and the rollout works fine if I move the mouse slowly. If I scroll quickly across the stage, the rollover state stays and the rollout doesn't happen. Slowly rolling back over the movie clip doesn't fire the rollover, but does fire the rollout according to the traces.
container.getChildByName("dot").getChildByName("id ").addEventListener(MouseEvent.ROLL_OUT, dotRollout);
Unfortunately, I don't have a small example of this. It is a piece of a rather large conversion from AS2 to AS3 and this is just about the last bug.
I could use a trick to track the listeners that are added and removed.
Am I creating the problem by adding and removing the listeners everytime a hover or src image gets loaded?
I should mention that it is failing in Flash player 10 since one post called it a player bug. No great info there.
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Jun 17, 2011
In our app, I am periodically noticing that a particular event handler is not firing. 99% of the time, it works fine, but, every so often, it just dies. How can I find out whats happening? Is the DispatchEvent() not happening/working somehow? Is my listener still listening? Did something else catch the event, and not pass it along so that the 'right' listener can get to it ?
Here's a little bit of the code...
Thats a somewhat pruned down version of what the real code is, but I don't think I trimmed out anything important. The key, as I see it is that we fire up the params dialog, then start to listen for the closed event. Then, we show the param dialogs close function. What happens when it fails is that the trace message "caught close event.." is never generated, and, consequently, the closeHandler is not getting called at all.
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Sep 18, 2011
I'm writing a SWF that I'd like to communicate with a Java process via Sockets. This is usually quite easy with standard Sockets, but for some reason the events described in the Socket documentation aren't firing when all signs say they should be.
On the Java side, I've set up a ServerSocket that's listening on port 8080. Using netcat I've confirmed it works as designed.[code]...
When I run the resulting SWF, all I get is "Called connect!" on the stage, and none of the events ever fire. Even more strangely, when I investigate the communication from the ServerSocket on the Java end, it receives and accepts a connection. When I close the SWF the code calling my Server completes as normal -- meaning it was hanging on a connection made with my SWF.
I'm left with a few questions...
With the exception of the event handlers, this is the end of control for my code (after the connection is established, we just wait for events and render them appropriately). Could the entire program be "terminating," and I'm just misunderstood about the Runtime model?Are there visibilty/naming requirements for the callbacks for them to be called? They're all public, but could it be that the Runtime isn't seeing them?Are there any gotchas with AS3 Socket programming? I kept thinking this was an issue of sandboxing, etc., but the SECURITY_ERROR didn't fire either.
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Oct 19, 2004
whats the easiest way to code tooltip methods to my different classes I currently have working. for example mylabel.setTooltip("text to show",true); mylabel.removeTooltip();so that any event anywhere could call a tooltip. The tooltip follows your mouse movement basically. If the method was called from an MC and the second parameter which is a boolean is set to true: mylabel.setTooltip("text to show",true);
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Apr 1, 2010
This simple code:
var loa:Loader = new Loader();
loa.contentLoaderInfo.addEventListener(Event.INIT, onLoaderInit);
loa.contentLoaderInfo.addEventListener(Event.COMPLETE, onLoaderComplete);
loa.loadBytes(someByteArray);
Sometimes works, but mostly doesn't. Neither 'onLoaderInit' nor 'onLoaderComplete' fire.
'someByteArray' is always a valid ByteArray, stored in a local SharedObject
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Aug 22, 2011
Can anyone tell me why I would not be getting Netconnection.NetworkChange and Netconnection.Closed events would not be getting fired when I am working on Flash CS5?
I get the Success event, but when I am attempting to test my reconnection code I pull out my network cabled and I never get the closed event.
Interestingly, I do get the Closed and NetworkChange events when I am debugging, but not when I just run the movie.
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May 14, 2007
This is problem is cropping up in Flash CS3 rather than Flex, but it's Actionscript 3.If you paste the code below into the main timeline on frame 1 and test it in Flash, the COMPLETE and INIT events both fire. And in Firefox and Safari it works too. INIT and COMPLETE both fire. But in IE (6 and 7, both with the latest flash player) on a PC only the INIT event fires.
Code:
var debugText:TextField = new TextField()
addChild(debugText)
var onRootLoaderInit = function (event:Event):void{
debugText.text += "INITIATED." + " "
} var onRootLoaderComplete = function (event:Event):void{
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} loaderInfo.addEventListener(Event.INIT, onRootLoaderInit);
loaderInfo.addEventListener(Event.COMPLETE, onRootLoaderComplete);
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Nov 5, 2009
I'm using the jpgencoder to save a few thumbnails out from flash. The first time I save an image it works just fine, but the second time I try, the image saves but I get absolutely no events fired off from the URLLoader that I'm using with it. If I refresh and try it again, then again it will work once, but not twice. Here is some sample code of what I'm doing:
Code:
var jpgURLRequest:URLRequest = new URLRequest("JPEGEncoder.php?path="+path);
var loader: URLLoader = new URLLoader();
jpgURLRequest.contentType = 'application/octet-stream';[code]....
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Jun 15, 2011
What I want is to play a swf file in my site. And when that swf animation file ends that is fully watched by the User, I want to call a PHP page.
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Jun 24, 2011
I'm taking my first stab at writing a custom flex 4 component by extending the UIComponent class. Unfortunately, I cannot get the component to respond to any sort of mouse events.I've tried setting mouseEnabled to true is the component, as well as setting mouseChildren to true in the parent (the stage object). It seems whatever I do, my click events can be detected from the stage, but not with the component.Here is my component class:
package components {
import mx.core.UIComponent;
public class DrawCanvas extends UIComponent {
[code]......
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Oct 10, 2011
As I started developing mobile apps for iOS/Android using Adobe AIR I encountered strange problem (or feature). If you create Sprite and make it draggable using startDrag/stopDrag inside MOUSE_DOWN/MOUSE_UP event handlers, everything works. But if you add another listener MOUSE_CLICK to the same object, it starts to fire together with MOUSE_UP. Logically this behavior is all right.
What I need is to prevent firing MOUSE_CLICK handler when user drags the Sprite (startDrag) and I need it to fire when user did not drag the Sprite. What I'm trying to create is a small thumbnail bar which is draggable and after clicking on concrete thumbnail its large version/image opens up. This is actually not possible as MOUSE_CLICK fires everytime user drags whole thumbnail bar so large image opens up everytime.
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Apr 1, 2009
I have a pretty elaborate class that extends Socket and performs some serialization and data protocol stuff. It works pretty well when I send small messages. However, when I send anything over about 132KB at once, the SOCKET_DATA progress events stop firing -- or at least the function I've got listening for them does. My class is called RPCSocket and I assign the socketDataHandler function like this in my constructor:
addEventListener(ProgressEvent.SOCKET_DATA, socketDataHandler);
My socketDataHandler function (with lots of comments) is attached. Is there some limit to how much data can be sent over a socket at once? Is there something wrong with my code? Here's the trace output:
Code:
socketdatahandler
bytesAvail:4380
buffer length:0
reading bytes into buffer for concat
buffer length after concat:4380
buffer state:0
[Code] .....
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Mar 28, 2011
I'm having a problem with this menu tutorial I followed from ASGamer. I have done and used most, if not all of the tutorials from that site.Anyway my problem is their base menu class;
package com.game.scripts.menu
{
import flash.display.MovieClip;
[code].....
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Feb 18, 2010
I have an instance of an object that starts and stops tweens for sub-movieclips. However I want to do stuff when the tween is finished.So I would like to assign a calling object to events; such as the attach() function does. However when using the attach() function on events it is called right away with the correct object, but when the event is triggered it is called with the object that executed the event (in my case the sub-movieclip).
If that's not possible; something similar to how Mouse events and MouseListeners work would also fit my needs Mouse.addListener(this). By adding a listener for specific events to the current object, then when these events are called they are called on our own object.
var myObject = this;
myMovieClip.onTweenComplete = function() {
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Jun 21, 2011
This isn't an exact duplicate of AS3: add event listener to loaded swf, actually it seems to be a mirror situation with non-mirror solution..
I have a test flash file that registers its own listener at first frame's actions.
trace("it's going to be OK");
stage.addEventListener(KeyboardEvent.KEY_DOWN, aKey);
Unfortunately neither line works when .swf is loaded into another movie. Assuming that stage object is wrong for such situations, which object should be used to get listener?
Is it necessary to rewrite loader in parent swf, as said in the linked question?
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Aug 18, 2011
I want to have a single event listener for multiple events and depending on the type of event i want to handle them separately.Something similar to Swiz framework see: 'Handling Multiple Events from a Single Method'.i have a piece of code like
var toolOptions:UIComponent=ToolOptions.createToolOptions(type);
if (options != null)
{[code]....
In above toolOptions is a mxml component which get dynamically created based on 'type'.Also which type of event should be dispatch the event from the component? eg: Event.SELECT. To be more precise the above is basically required for a toolbar.When user selects a tool,he is shown options for a tool and when he selects options,tool should apply them to object on the view.
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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, 2010
Can I create a single event listener for all mouse events ?
my understanding is no because: what's happening is that each listener is checking for a string in an event and comparing it for a match against a list which is the listener.
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Jan 6, 2010
I have multiple items in my app that I would like the user to click on.Some items are completely different classes.The classes dispatch events and then when the events are captured, some modifications are done to the transform properties of a loosely coupled display object.I want two separate classes to dispatch the same type of event, since I already have an image class that draws images based on a given url... I want the classes to dispatch the events, but then I think I want the difference to be detected when the event comes along... i.e., I would like to recognize the 'origin' or 'sub-type' of the event. Some sort of if/then logic would suffice.
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Aug 2, 2009
I have a movie clip I am using as a button (instance name btn1) and I added an event listener to it (using the following line): btn1.addEventListener(MouseEvent.MOUSE_OVER, animate1); the function "animate1" triggers some small animation when the mouse is over the movieclip. my problem is that the animation is triggered both on mouse over and mouse out events.
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Feb 4, 2009
this is the error I am having:
TypeError: Error #2007: Parameter listener must be non-null.at flash.events::EventDispatcher/removeEventListener()
at project1_fla::MainTimeline/btnName()
here is my code:
ActionScript Code:
import caurina.transitions.Tweener;
import caurina.transitions.properties.ColorShortcuts;[code]..........
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Apr 13, 2009
Line 1 Frame 1:
[Code]...
I am trying to trace the results of my listener when the browser is resized...no avail. Are you able to see what I am doing wrong?
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Feb 11, 2008
I am having a weird problem with scope/reference. I am using a loop to preload a number of thumbs in one go, I am creating a different listener for each one on the fly and then passing event handlers for each one of them. This should not be difficult using a loop, but somehow I cannot access the the parent object on my listener and therefore I can't do much with my thumbs after they are loaded.Here is the relevant segment of my code. myThumb_mc is a temporary variable that does not exist when the loop finishes, you can copy and paste this code to test it though. It should work to that extent. (you'll need an image1.jpg to be in the same directory)
Code:
var myThumb_mc = _root.createEmptyMovieClip("myThumb_mc", _root.getNextHighestDepth());
myThumb_mc.clipLoader = new MovieClipLoader();
myThumb_mc.clipLoader.loadClip("image1.jpg",myThumb_mc);[code].....
The code above works, but it does not look nice and it cannot be the right way of doing this. Long question short, how can I access the parent of a listener from a listener object? ._parent does not work.
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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 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.
So, just wondering about this behaviour. Is there a way to check for the number of events that are currently active on a particular component? Better way to handle adding events?
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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)
This enables me to only use the Flash to play the audio, thus creating the same user experience regardless of HTML5 browser support. I'm assuming I will have to 'listen' for events in AS3, however any pointers in how to engage these events in JS and react to the events in AS3
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Aug 25, 2010
LinkeSetFx has its own CollectionEvent, but I don't know how to map the LinkedSetFx event to mx.events.collectionEvent(I want use it in ComboBox). LinkedSetFx is in AS3Commons-collection framework.Here is the url, choose the as3commons-collections-1.0.0.zip, you'll find LinkedSetFx in srcorgas3commonscollectionsfx
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Mar 27, 2012
iam making a game and i almost finish except one error i couln.t get it
TypeError: Error #1034: Type Coercion failed: cannot convert flash.events::Event@3738fb79 to flash.events.MouseEvent.
TypeError: Error #1034: Type Coercion failed: cannot convert flash.events::Event@3738fb79 to flash.events.MouseEvent.
[code]....
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