ActionScript 3.0 :: Adding Event Listeners To Stage Buttons?
May 11, 2010
I have 22 buttons (each named buttoni where i is a number between 0-21...e.g. button0, button1, button2) that I've created and artfully arranged on the stage in my .fla file. The document class for the .fla file is People.as, and in People I'd like to give each button a rollover and click event listener, but I can't figure out how to refer to them using a loop.
Here's my code, which obviously doesn't work:
ActionScript Code:
private function initButtons() : void {
for (var i:int = 0; i<numSquares; i++) {
var thisButton : String = "button" + i;
[Code].....
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Feb 6, 2009
I'm adding and removing stage event listeners I am relatively new to AS 3 and have been building a liquid layout site unfortunately I do not have a strong grasp of classes and have been doing all of my scripting on the main timeline with encapsulated script within MC's.
basically I am calling on the same functions over and over and those are mostly resize functions which I have added StageEventListeners on the appropriate frames to listen for resize events on that stage now as of now I have literally dozens of these scattered about the site. when testing my site things are running fairly smoothly however I keep getting error messages in my output window that go a little something like this.
[Code]...
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Apr 5, 2009
Im just trying to add an event listener to all of the objects in an array I have posted my error and the code below.
error:
TypeError: Error #1006: addEventListener is not a function.
code:
mainMenuArray = new Array([introButton], [photographyButton], [graphicsButton], [contactsButton], [projectsButton], [linksButton]);
private function firstMenuListeners()
[Code]....
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Oct 14, 2011
I am trying to create a drag and drop activity, and I would like to use an array for easy reusability.I'm new to as3 so I've been adjusting my old as2 code. I am using a component for each of my drags and most of it is working well.My problem is with the event handlers. I use the array to populate all of my 'drags' with the information added in their parameters and this works, but when I create my event listeners it seems to only want to move the last item in the array.My drag components are called drag1, drag2, and drag3.[code]
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Jul 1, 2010
I'm trying to do something that I'm not sure if it's possible. I have to add or remove multiple listeners that will trigger the same three methods (onComplete, onError and showProgress). I was trying to do something like this:
[Code]...
Is there anyway to solve this? It seems that after passing through the addListeners method, the loader instance gets lost.
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Oct 17, 2010
Code:
public class Principal extends MovieClip
{
public function Principal()
{
[Code].....
The output doesn't show the text 'teste'. How do we add eventlisteners to ANY object we create?
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Apr 21, 2011
ive made a flash website containing 5 pages all accessed via flash buttonson one of the page ive tried loading a external swf file and then added event listeners to each of the buttons so when a new page is selected the swf file doesnt continue to play in the background on the other pagesthis works, however when i then try to change page again this error is displayed:ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.at flash.display:isplayObjectContainer/removeChild()atValleyViewingWebsite_fla::MainTimeline/btnClick()below is the code im using:
var Xpos:Number = 110;
var Ypos:Number = 170;
var swf:MovieClip;
[code].....
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Sep 24, 2009
var chArray:Array = new Array("ch1", "ch2", "ch3", "ch4", "ch5", "ch6", "ch7", "ch8", "ch9", "ch10", "ch11", "ch12", "ch13", "ch14", "ch15");
for(var i:int=0; h <chArray.length; i++) {
[code].....
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Sep 24, 2009
I've created this code to loop through an array of image names and load them to the stage. Currently I'm just stepping them down 175 pixels each, which eventually I'll want to offset by the height of each of them (but I'm having an issue with that too lol ). Anyway...my question is, I've seen code to add event listners to each movie clip dynamically, but that code was working on static movie clips. I want to add the listners to my dynamic images and I'm not sure what that should look like.
[Code]....
I know this isn't correct, specifically in the captureAllClicks function...but I'm not sure how else to reference the current item since it was dynamically generated.
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May 24, 2010
What I want to do is be able to click a button that adds an Item to the stage and then you are able to drag the item around on the stage. I know how to do these things separately as in if the item is already on the stage I know how to add the code to drag it and I know how to create a button that brings a library item on the stage. How would I combine the two?
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Jan 6, 2011
I'm trying to make a flash version of those refrigerator magnet poetry kits. As such I have about 150-180 little MCs each with a different word. They are all named sequentially, so theoretically I could just make some array counter or something to stick the handlers on right?
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Aug 2, 2011
I have some MovieClip class that has eventListener, added from inside the constructor of the class (it's MouseEvent.MOUSE_DOWN). Now, I want to add the same listener externally, from parent class, for other purposes. Will these two interfere with each other or it's okay?
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Dec 8, 2009
I have done this same thing in ActionScript 3, but am not familiar with ActionScript 2, which I am forced to use for this project. I am loading products into a SWF via XML and attempting to add a click event to each dynamically-created movieclip. Simply tracing the text from a node in XML will do for now. I'd like to assign a property called "desc" or "description" to each movieclip and have it trace that property's value when clicked. Here is the relevant portion of my code as it stands:
Code: Select allvar iXML:XML = new XML();
iXML.ignoreWhite = true;
iXML.onLoad = init;
iXML.load("http://localhost:8888/products.php?p=Shortboards");
[Code].....
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Jan 31, 2010
I'd like to add event listeners to movieclips (already on the stage), whose names are called from an array one by one, into a for loop.
Code:
// there are 4 movielcips on the stage with name a1 - a4.
// create array
var Bro:Array = ["a1","a2","a3","a4"];
// for loop
for ( var i:Number = 0; i < 4; i++) {
// Add event listener to array values to buttons.
Bro[i].addEventListener(MouseEvent.ROLL_OVER, roll, false, 0, true);
//execute this function on rollover
function roll() {
trace("why wont my arrays work in for loops");
}}
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Feb 27, 2012
What is the best way to make a menu with items that can be bought ( a.k.a shop ), bought items are invisible and there are about 20 items or so. What's the better approach than adding mouse event listeners to all 20 items?
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Mar 3, 2012
I want to make a little game. What I need is to add event listeners to all of Tank objects inside the Battlefield instance. I just can seem to figure out how.
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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?
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Jan 21, 2009
I've created a drop down list and populated it with dynamic buttons. (I made a DropDown_btn class with a dynamic text field in it and then filled the button text from an xml file). On rollover I tint the button blue and then set the tint back to black on rollout. When you click on the button I'd like it to stay blue until a different button is clicked.
I thought on CLICK I'd run a function like this:
ActionScript Code:
function removeRollover(evt:MouseEvent):void {
evt.target.transform.colorTransform=c;
evt.target.removeEventListener(MouseEvent.ROLL_OUT, btnOut);
evt.target.removeEventListener(MouseEvent.ROLL_OVER, btnOver);
}
...and then I need to addEventListeners back to any button that doesn't have them and set that button back to black. I could do this by looping through an array of the buttons but I can't figure out how to access them as objects.
I also gave them each a property of "buttonValue" when I loaded them so I can access event.currentTarget.buttonValue (which in this case is a number from 1-5) but once again I can't figure out how I might leverage this information.
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Mar 21, 2011
This is my first real programming endeavor and this is the last thing holding my little project back from being a success.
My goal with this code is to add event listeners to an array of Movie Clips that will drag and drop them on the stage.
Here is the code:
var itemBank:Array = new Array(d1_anim.drawer1.test01.movieClip_1, d1_anim.drawer1.test01.movieClip_2);
for(var i:int = 0; i < itemBank.length; i++) {
[Code].....
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Jun 20, 2010
I want to say that everything I code and work with is created through a main class and added to the stage through actionscript, the stage is completely empty before running.I've got a button in my library, and I create 8 of them and add them to the stage. I also add them to an aaray which i then compare in a for loop to add an event listener to them. I do it this way because they all run the same function. Each of the 8 buttons has a variable which is unique to that specific instance which I will use to do execute different sections of the function that gets called when I click one of the buttons.[code]
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Oct 15, 2009
i have a rookie question to ask and it's how to assign the same event listeners to multiple buttons in as3 instead of having to write out the same code over and over again like so...
ActionScript Code:
listing.home.addEventListener(MouseEvent.ROLL_OVER , butOver)
listing.home.addEventListener(MouseEvent.ROLL_OUT , butOut)
listing.home.addEventListener(MouseEvent.CLICK , released)
[Code]...
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Nov 6, 2010
I found this code for a contact form at[url]...and it dynamically creates input fields and buttons. I didn't like the dynamically drawn submit and reset buttons, so I added my own MCs(my 'buttons') to the stage.I tried modifying the code and took out the dynamically drawn buttons..However, I cant figure out how to add Event Listeners to the buttons which exist on the stage--Im getting undefined errors...[code]...
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Apr 7, 2009
As part of a very large project, I want the ability to set stage level event Listeners.
This works very easily with MouseEvent s but I can not seem to get it to run properly with KeyboardEvents. Having google'd this issue I have found very little on the subject. Mostly noobish type questions of syntax and so forth, but I have seen comment of people claiming to have it work for them.
To ensure no issues with any other code, I have made a blank project and blank .as file, with only the event listener code:
[Code]....
Click events are always captured and traced correctly, without fail. Pressing keys appears to do nothing. If however you mash the keyboards very very quickly, one or two key events will trigger sporadically.
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Apr 22, 2010
I think I have been generating duplicate Event Listeners behind the scenes which is causing me some problems.
I like to find out what Listeners are in existence at a single moment. My code is long so it is hard to go line by line to isolate the issue. It would be faster if I knew what Listeners are were activated.
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Feb 5, 2010
I create a stage keyboard event listener in an externally loaded swf such as:
Code:
stage.addEventListener(KeyboardEvent.KEY_DOWN, onDown);
My question is how and where I should remove this event listener? I have added an unload event handler to the external swf like this:
Code:
this.loaderInfo.addEventListener(Event.UNLOAD, unloadHandler);
The unloadHandler code looks like this:
Code:
private function unloadHandler(event:Event):void {
stage.removeEventListener(KeyboardEvent.KEY_DOWN, onDown);
}
When the container swf unloads the external swf, unloadHandler() gets called, but with the following error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
Where should the keyboard event be removed?
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May 24, 2011
i am making a simple game i want to be able to add an keyboard event lisnter within the class constructor. However i am having trouble. i undertsand you have to pass the stage through a listed display object property stage? anyway i am getting errors that do not recognise my event listener keyboard event.
package louiseguchi.game
{
import flash.display.Stage;
[Code]....
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Nov 6, 2010
I found this code for a contact form at msinghinteractive easy-to-use-flash-as3-contact-us-form-class and it dynamically creates input fields and buttons. I didnt like the dynamically drawn submit and reset buttons, so I added my own MCs(my 'buttons') to the stage. I tried modifying the code and took out the dynamically drawn buttons..However, I cant figure out how to add Event Listeners to the buttons which exist on the stage--Im getting undefined errors...The fla is directly associated to a main.as class which just determines the parameters of the .as class it is tied to -to set the size of the Contact form.This is the entire class:
Code:
package{
import classes.*;
import flash.display.*;
[code]....
where btn is the instance name of my submit button MC.My problem is that because my buttons exist on the stage I dont know how to add Event listeners within that class---or rather doing that doesnt work because the listeners are throwing that undefined property errors--I gave them instance names...
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Mar 20, 2012
I have just added a menu screen to my game and I get the following error:
ActionScript Code:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at MyGame()
[code].....
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May 23, 2010
I am creating a site with lots of big scrollable text-boxes in it. Each text-box object contained some text, and two buttons to scroll up/down with. The scroll buttons each had an event listener so the text moved when you clicked them.
These text-boxes were stacked on-top of each other with all except one having an alpha of 0. If I wanted to change which text-box is active I move it to the front and call a small TweenLite animation.
To the left (outside of the text-box objects) I have an object similar to a menu. It also has about 12 or so event-listeners (one for every button).
This turns out cause A LOT of lag an it's very troublesome for my laptop to run it. reduce the number of event-listeners on the stage and also the amount of text-boxes.
What I was thinking was to add the text-boxes using AS so I only have 1 on the stage at a time but I couldn't figure out how to do it. I also thought it might be better to just use 1 big event-listeners and from mouseX and mouseY decide which button the user is trying to push.
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Sep 19, 2009
I have a movieClip on stage, inside is a dynamic textfield, and I have set mc.scaleY = 0;
Code:
mc.scaleY = 0;
mc.buttonMode = true;
mc.mouseChildren = false;
And suddenly everything above and below (on the whole stage) where the movieClip actually is receives mouse, I can see by the button mode. But it only happens with dynamic text, not static.
I have attached the example:
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