ActionScript 3.0 :: RemoveEventListener - Written An Event Listener That Passes 2 Arguments With It?
Apr 3, 2010
I've written an event listener that passes 2 arguments with it. Now, after the condition is met,I've to remove the event listener but with no success..Here's the code:
//Function animateChar called on Enter Frame event with 2 arguments
www.addEventListener(Event.ENTER_FRAME, animateChar(184, 86), false, 0, true);
//Here's where animateChar is defined
private function animateChar(__x, __y):Function { return function(e:Event):void { var t = e.target; t.x += (__x - t.x)/speed; t.y += (__y - t.y)/speed; if ((Math.round(t.x) == __x) || (Math.round(t.y) == __y)){ t.removeEventListener(Event.ENTER_FRAME, animateChar); // Not working.. } } }
I'm working on a website navigation wherein I want that on clicking the navigation buttons, a movie clip eases out to that clicked button to show the current page. I'm able to move the movieclip to the button's location but I need to remove the event listener once the movieclip stops over the navigation button.
Code: import flash.events.Event; btnStart.addEventListener(MouseEvent.CLICK, startMovie); function startMovie(e:Event):void { ball.addEventListener(Event.ENTER_FRAME, moveBall(btnStart)); } function moveBall(bt:SimpleButton):Function { [Code] .....
I searched the interweb for DAYS trying to find how to accomplish this via an event listener in AS3, but everything I found suggested creating a custom Event. The problem with this, is you have to decide the arguments you wish to pass in advance, and I wanted to create them dynamically on the fly ( for example: passing a string that a user entered into a textfield to some function for processing ).
So last night I spent hours scouring forums - and UREKA! I finally found something that I was able to tweak to send a variable number of arguments of any data type. I've never posted on a forum, but it was such a breakthru that I had to share it with the world.
Here is the code:
btn1.addEventListener( MouseEvent.CLICK, function onClick(e:Event ) { displayArgs(e, new Array("Larry", "Curly", "Moe") ) } ); btn2.addEventListener( MouseEvent.CLICK, function onClick(e:Event ) {
Since when using sql lite if you try and do a function at the same moment it throws an error, im just trying to make a function that will check if its executing, and if it is try again in 10 milliseconds, this exact function works fine if i dont have to pass any arguments to the function but im confused how I can pass the vars back into the function it'll be executing.[code]
TypeError: Error #2007: Parameter listener must be non-null.at flash.events::EventDispatcher/removeEventListener() at project1_fla::MainTimeline/btnName()
giving a function reference in the result attribute of the HTTPService class like this :
protected function httpserviceCheckUpdate_resultHandler(event:ResultEvent):void { var version:Number = event.result.text.version as Number;[code]....
If both of them are same then how can I provide the event parameter using the second approach (as written in the result attribute of the httpservice class)? Which one of them is the better way of doing things in FLEX.
I am trying to learn JavaScript and I am wondering whether JavaScript has a event listener just like ActionScript's ENTER_FRAME. Basically, I want this event listener to listen "all the time" not just wait for any particular instance (mouse click, keyboard event) of event.
if I have an event listerner (mouse, keyboard, enterframe,....event) that is being triggered, and when it finishes its event, something that is able to detect the finished event listener and fire out another sets of event.
It works more like MOTION_FINISH in TweenEvent, but it is only available for TweenEvent only, what if I want to detect a mousclick, keyboard, enterframe or even touch event?
My stage has about 25 buttons on it. Each button when pressed to tweens the background to some random x/y coordinates and then loads an external swf file.This is all working, but the timing is off. How can I wait for the initial background tween to end before I make the loader call to the .swf file.Currently each button's behavior is called on the MouseEvent.CLICK event which calls a function that knows its unique filename.swf. I know you can add the MOTION_FINISH even to the tween event but then I would have to call a new function and lose track of the button that initially called it.
I'm moving on to my next massive programming project and I'm trying to decide whether I should code it in as 2.0 or 3.0. I came across the new click event model in 3.0. Right now it's looking like a pain in the butt to me. So now I have to make a function and add it as an event listener? what the hell? What's the benefit? I understand stuff like this makes AS a more complete language but it's kinda annoying.
I am fairly new to AS3. vancouverMC.dotsBttn.addEventListener(MouseEvent.M OUSE_OVER, mcIn(vancouverMC)); vancouverMC.dotsBttn.addEventListener(MouseEvent.M OUSE_OUT, mcOut(vancouverMC)); function mcIn(mcName:MovieClip):void{ mcName.gotoAndPlay("in"); mcName.ringMC.gotoAndPlay("on"); } function mcOut(mcName:MovieClip):void{ mcName.gotoAndPlay("out"); mcName.ringMC.gotoAndPlay("off"); } Why this is Not Working?
Say I have an array with 4 string elements that are 4 different urls. On the stage I have 4 movieclips that I want to have listen for a CLICK event. When the user clicks a button, the navigate to one of the 4 urls.I can loop through the buttons and add and event listener to each:
Code: private function applyPlankLinks():void { for (var i:uint = 0; i<numberOfPlankBtns; i++) {
This is a very basic question but I can't seem to find an answer. I have a mouse over event and have created the buttons with the mouse overs which is working great. I created the actionscript to go to a specific web page when a user clicks the button. Now, I need to add a label to the mouse over so when someone mouse's over any area of the button, it will show them a particular name for the button.
I am sure that this can be done using actionscript in a mouse event roll over command but I can't figure out what I need to show the text. Here is where I am:
how can i access event.target outside event listener method.say for example
my_mc.addEventListener(MouseEvent.CLICK, onC); function onC(e:MouseEvent):void { var m:MovieClip = e.target as MovieClip; } trace(m.totalframes);/// not working
now what if i want to get totalframe property of m instance, in short for every movieClip clicked.
I am doing this inside a module containing viewstacks and their childs.Calling onInit() on creationComplete of module.When I am inside one of the childs of a viewstack of this module and press Enter, it doesnt not invoke the listener function at all (bp inside this does not get hit).
private function onInit():void{ this.addEventListener(KeyboardEvent.KEY_DOWN, keyPressed); }[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.
I have these buttons in a movie clip and I would like to have only one event listener for the parent, using event.target to point to the children. I have also tried event.currentTarget, and it didn't work.here is the code that works:
I know my method is all wrong .. but here's the history I dev'd a number of modules via the timeline they all had essentially the same script thought ?? .. a class would make maint easier/cleaner so I went through a laborious but educational process now I seem to have created a interesting issue I'm hoping you folks can add insight to because the timeline holds objects I need a ref to them from within the class and I pass this to the class methods
var service:HTTPService = new HTTPService(); if (search.Location && search.Location.length > 0 && chkLocalSearch.selected) { service.url = 'http://ajax.googleapis.com/ajax/services/search/local'; service.request.q = search.Keyword;
[Code]......
I want to pass the search object to the result method (onServerResponse) but if I do it in a closure it gets passed by value. Is there anyway to do it by reference without searching through my array of search objects for the value returned in the result?
I have a code in AS3 that works when you rollover it. I need to use the same code but not with an eventlistener for a mouse event but a frame event when the timeline plays the clip
var coordX:Number = shaker_mc.x;var coordY:Number = shaker_mc.y;var timer:Timer = new Timer(10); shaker_mc.buttonMode = false; shaker_mc.addEventListener(MouseEvent.MOUSE_OVER,startShake);shaker_mc.addEventListener(Mous
printableInvoice.addEventListener(batchGenerated, printableInvoice_batchGeneratedHandler);Results in this error: 1120: Access of undefined property batchGenerated. I have tried it as FlexEvent.batchGenerated and FlashEvent.batchGenerated.
The MetaData and function that dispatches the even in the component printableInvoice is all right. It I instantiate printableInvoice as an mxml component instead of via action-script it well let put a tag into the mxml line: batchGenerated="someFunction()
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?
This is something that tugs at my mind a lot so I figured I'd ask the community. If I have a class called MyParentWidget and it contains an instance of MyChildWidget with an instance name of myChildWidget then I will often do something like this:
I'm building a center stage object and I wanted to know if there's any way to add a event listener that checks if the children have changed in size.[code]This seems like it should be available but I can't find a reference.
