I rarely use NetStream or any video in my projects, but someone I email with was wondering this, and I have no earthly idea.
Is there any reason why the NetStream's "onMetaData" event cannot be listened to using addEventListener, but instead requires you to use a callback function?
Is it faster, avoiding the overhead of events? Is it to prevent more than one listener being attached?
i'm using FLVPlayback in order to load a movie. i keep getting this error: Error #2044: Unhandled AsyncErrorEvent:. text=Error #2095: flash.net.NetStream was unable to invoke callback onMetaData. error=ReferenceError: Error #1069: Property duration not found on Number and there is no default value.
if i get it right, it means that inside built-in onMetaData there is no duration property. so, i tried adding my own call back function:
//creating a custom client
var customClient:Object = new Object();
customClient.onCuePoint = cuePointHandler;
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I have created a flex project on flash builder 4. In the MXML I have
xmlns:mx="library://ns.adobe.com/flex/mx" creationComplete="init();"
And to check if it runs
[Code]...
Getting this output from the following code, video streams OK but fills the output log with.Error #2095: flash.net.NetStream was unable to invoke callback onFI
var nc:NetConnection; var ns:NetStream; var nsPlayer:NetStream; var vidPlayer:Video;
function init() { nc = new NetConnection(); nc.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus); nc.connect("rtmp:///video");}
function onNetStatus (event:NetStatusEvent):void { trace(event.info.code); switch(event.info.code){ case "NetConnection.Connect.Success": displayVideo(); break; }}
[code]...
I'm trying to add a custom callback handler to a NetStream client in a p2p application. The problem is, when I add such a handler, the NetStream Client doesn't function as it did before. It seems the NetStream.client object is changed. I know the default object is this. But changing the client to this doesn't solve the problem. The remoteControlStream, is the incoming stream. And the localControl stream is the stream being published. This is the localControlStream that's being send by the peer, and received as remoteControlStream:
private function initLocalControlStream():void{
localControlStream = new NetStream(nc, NetStream.DIRECT_CONNECTIONS);
localControlStream.addEventListener(NetStatusEvent.NET_STATUS, localControlHandler);
localControlStream.publish(myPeerID+"control");
var localControlStreamClient:Object = new Object();
[Code] .....
The onPeerConnect method of the localControlStream doesn't get called when I connect when the above handler is added. When I remove the that handler, the onPeerConnect method gets called. Obviously the problem is the NetStream.client.
I am trying this function in a class, but i can only trace duration A and not duration B
Code:
public function playVideo():Void {
if(!isStarted) {
[code].....
This might be more of a subjective question, but is it generally best practice to have one dedicated method per event-types that you add an event-listener?
Such as:
myButton.addEventListener(MouseEvent.MOUSE_OVER, onMouseOver);
myButton.addEventListener(MouseEvent.MOUSE_OUT, onMouseOut);
//Somewhere else in the code...
[Code].....
And if you had a MouseEvent.MOUSE_UP, MouseEvent.MOUSE_DOWN and other relevant MouseEvents event-listeners to watch for, you could even set a switch statement to handle all the various MouseEvent types.
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]....
how to write a callback instead of using an event to communicate between two classes (objects) in Actionscript 3.0?
View 2 RepliesI created an image uploader for an app I am working on. I first used php for the server side script, and everything worked fine. I found out afterwards I had to use .net, so I created new serverside scripts. The problem I am having is that my event.COMPLETE listener is never firing. I can receive data back using a DATAEVENT listener, but then it stops at this error:
Error #2044: Unhandled IOErrorEvent:. text=Error #2036: Load Never Completed.
Here is how I am sending my file.
var fileRefReq:URLRequest = new URLRequest(FILE_UPLOAD_TEMP);
var fileReqVars:URLVariables = new URLVariables();
fileReqVars.subdir = "Temp";
fileRefReq.data = fileReqVars;
fileRefReq.method = URLRequestMethod.POST;
fileRef.upload(fileRefReq);
The file definitely gets uploaded to the first TEMP directory, but then it breaks with the above error.
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.
I have been experimenting with supplying better debugging information when an error happens in asynchronous code in AS3.
As an example of the poor error reporting be default, take the case where I force a null pointer in a Timer callback (github gist), I get the following stacktrace back on the console:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at Function/<anonymous>()[/[path-to-source-file]/TestClass.as:14]
at flash.utils::Timer/_timerDispatch()
at flash.utils::Timer/tick()
This tells me very little about how the timer callback actually links to my code.
The question is: How can I get information about what code created the callback?
For example:
for(var i:int=0; i<someArray.length; i++)
{
var loader:Loader=new Loader();
loader.load(new URLRequest("http://testurl.com/test.jpg"));
[Code]....
The second paramter (i) for imageLoaded is always 1, I guess because i no longer exists and is defaulting to 1. Is it possible to get that second paramter to be evaluated when the load is started rather than on complete?
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?
From what I understand, this should work:
[Code]...
How do I keep the cycles active, and also call a function at the end of each cycle/tween? Right now I can remove the soundHammer call back and the tween will continue to cycle, and if I remove the cycle soundHammer is called properly, but obviously it doesn't cycle anymore.
Lets say I add a callback function to be run every frame the AS2 way.
Code:
this.onEnterFrame = myFunction;
If I add another enter frame listener, will this replace the old one, or add to the old one, so both functions will run when frames are entered? And how do I remove these listeners?
I'm working with arrays in AS3 and some of the utility functions described in the livedocs such as filter() or some() would be very useful to me, if only I could pass parameters to them...
Actually, I cannot find a single example of the use of these functions with custom parameters passed to their callbacks. Everywhere, it is always used with constants ! E.g. on this page: [URL]
var arr:Array = new Array();var totalElements:uint = 100;for(var i:uint = 0; i<totalElements; i++) { arr[i] = Math.round(Math.random()*100);}function isLargerThan90(element:*, index:int, arr:Array):Boolean { return element > 90;}var highestNumbers:Array = arr.filter(isLargerThan90);trace(highestNumbers);
What I need is a kind of "isLargerThan" function with "90" as an argument's value, not as a constant. Something like
function isLargerThan(element:*, index:int, arr:Array, param:Object):Boolean { return element > (param as Number);}I find it very odd that I cannot find no mention of the way to do this on the whole WWW, because that makes these utility functions absolutely helpless in many many cases and programming with arrays a real pain...
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)); .....
When you call a method of a class inside a callback function, you can not use this object.To call the method, in javascript, I declare that variable, assign this to that, and use that inside the callback to call the method of this.In actionscript, do I have to do the same way as I do in javascript?The following code is the example to use that to call a method inside callback.Are there more simple way in actionscript?
class C {
private var that:C;
function C() {[code]......
import caurina.transitions.Tweener;
class Scanner extends MovieClip
{
public var Scanner00_mc:MovieClip;
public var Scanner01_mc:MovieClip;
[Code].....
Makes sense as for the sequence, what doesn't make sense is why Tweener fail to loop back to the "fade" function ? They are suppose to be calling each other in an astable/blinking manner.
I suspect it's a scope problem but I don't know how to fix this, it seems AS2 Class doesn't know that there is a fade function within itself after the second Tweener call.
I've got a really weird problem that I've boiled down to its fundamentals, and I'm hoping that someone here smarter than I am knows why AS3 would be acting this way. Attached is a ZIP with a few FLAs and .AS files. I'm using Flash CS5. Please bear with me as I explain the situation.
I have a class called TestChildA:
package testing
{
import flash.display.MovieClip;
[Code]...
For some reason, the fact that we're not trying to obtain a TestChildA reference allows the Frame 0 ActionScript in TestChildA.swf to execute properly. TestChildB, on the other hand, continues to fail Frame 0 execution since we're still getting a reference to it.
As we saw in the first version of the INIT handler above, querying the test_str variable out of the loaded content directly without trying to cast it worked fine. Why is it that using 'as' to get a specific reference to the content with the proper class results in the Frame 0 script of that content to fail running? Theoretically, the Frame 0 actions should have already been executed prior to reaching the INIT handler anyway, so it's doubly confusing.
If anyone has a better understanding than I of the ActionScript internals and can explain the reason for this issue,
I'm currently working with soundmanager2 in an IE/flash context (not html5). The issue is that audio playback of mp3 content does not occur for the following case where the 'onload' callback function is defined as null OR as a function that does almost nothing.
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I don't think this is possible, but is there a way to validate the arguments a callback accepts. For example someone passes me callback "mycallback", I want to assert it accepts an argument String.
public function addHandler(handler : Function) : void{
//pseudo code
Assert.functionAcceptsArguments(handler, String);
}
whenever I try to call the removeMovieClip function in a callback handler, it just doesn't work! Maybe I'm tired, or I've just missed something this is apparantly obvious. In my code exert below, is just a simple script that attaches a movie clip to stage (square_mc) and creates a duplicate instance. When the component button is clicked, I want the original movie clip to be deleted, but nothing happens!
Code:
this.attachMovie("square", "square_mc", this.getNextHighestDepth());
square_mc.duplicateMovieClip("square_mc2", this.getNextHighestDepth(),
{_x:50}) var listener:Object = new Object;[code].............
it seems to me that when you use laco tweens and callback a function, you can't pass data in that function, because the function won't wait until the tween is finished but is being carried out right away. For instance, I want to tween movieclip MC:
[Code]...
im having this errors:
1021: Duplicate function definition function onComplete1(event:Event):void {
1021: Duplicate function definition function stopSound1(event:MouseEvent):void {
1021: Duplicate function definition function backSound1(event:MouseEvent):void {
codes i used:
Code:
var thereReq:URLRequest = new URLRequest("SOUNDS/how.mp3");
var there:Sound = new Sound();
var thereControl:SoundChannel = new SoundChannel();
[code]....
I'm just trying to build as simple of a player as possible, and I have it working how I want it to, but I need to figure out how to know when the video ends so I can call any callback functions I might want to be called.I've spent the better part of the last 3 hours trying different examples online, but none do anything. It compiles fine, but just doesn't do anything...
I'm attaching the code I already have, and would appreciate it if anyone could point me in the right direction.
ActionScript Code:
var _path:String = root.loaderInfo.parameters.Path;
var _w:int = root.loaderInfo.parameters.Width;
var _h:int = root.loaderInfo.parameters.Height;
[code]....
I am trying to detect the end of a streaming video using NetStream.onStatus in AS2. It worked like a charm in a Flash app but I started having problems when I decided to put it in a separate AS class. Here's the snippet -->
class MyClass
{
�.
// Properties & variables
[Code]....
The code works fine and fires an event when the stream stops (I get the trace output without a hiccup). Problem is: it doesn't seem to recognize MyMethod function - or any other method of this class for that matter - for some reason! Just ignores it! When I set trace traps inside MyMethod they don't fire.
So Im trying to get the current time (play head time) for a video on the stage and am using Netstream. I have a timer with an event listener pinging a function every 1000ms. But it is not smooth and the numbers jump a bit.
Is there a way to attach an event listener to the netstream time itself?
I tried ns.addEventListener(NetStatusEvent.time, monitorTime); but as you probably know that Dog wont hunt.
I import a external SWF into a UILoader, the SWF contains a netStream that I need to close from a Main.swf event handler, slideShow_btn. Basically from Main.swf when/if slideShow_btn event happens I need to check and close the nsStream in videoplayer.swf Here are my event handlers in Main.swf
[Code]...