Professional :: Dynamically Add An Event Listener
Dec 6, 2010
Say you create a dynamic movieClip, and also dynamically add an event listener to it.Then you addChild the clip.Now it comes time to get rid of it - you want to get rid of the object and it's event listener.[code]What I'm trying to do is have a close button on each movieclip that when clicked, runs a function to remove the clip and it's children from display and also remove references to it so that it can be ready for garbage collection.
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Aug 29, 2010
I'll present my problem in a few steps:
- I have a constructor method which is trigerred automatically once the program starts
- The method's argument determines whether or not an enter frame event is to be added(move:Boolean = true)
- If true, add the event listener
- there are getters and setters created to access the variables from another class
The problem is that the event listener is run only once - at the initial phase, so it checks the move's value just once (true - add, false - don't add), so it can be turned on and off only in this class. I want to allow a user to change its value from an external class, which is impossible even with getters and setters, because it adds the listener before the user even gets a chance to change it. I want the listener to be added only if the user wants it to. I know it looks complicated,
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Apr 17, 2009
So I have an object, generated on each click of the mouse. It's set up as a series of points with properties, with values for position randomly calculated, and set around where the user clicks the mouse. Lines are drawn from where the mouse is clicked out to each of these points, so it kind of looks like a star, but only lines, rather than a solid shape (like those old 50's atom clocks?). So once clicked there's an enter frame event listener on the object so that each of the points 'wobble' (using a randomly generated number) up and down around the original point.
For some reason, I can either set it so that on each new click of the mouse and newly generated object, the last one stops "wobbling" and only the new one does, or each new object moves to where the new object is, and maybe is still wobbling(?), but is underneath the new object. This way has the event.target as a new object in the wobble function, so I think it may be just a case of where the centre point is - i.e. saving the mouse x and y for each object individually, or perhaps I have too much of the setup function code repeated in my "wobble"function?
[Code]...
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Feb 10, 2011
I've dynamically created event listeners in the usual sort of way:
Code:
myText.addEventListener(MouseEvent.MOUSE_OVER, hover(nameLabel));
function hover(nameLabel):Function
{
[Code].....
The problem is how to remove the event listener later in the program as the usual code isn't working. I'm guessing I should have done this in a class but I'd like to understand this problem better.
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Jan 22, 2010
I'm looking for an alternative to using:
stage.addEventListener(KeyboardEvent.KEY_DOWN, keyFunction);
The problem I am encountering is that eventListener above works fine on its own(stand-alone swf), but when loading an .swf externally into another .swf, the listener fails with the following error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
How can you target the event listener when loading as an external .swf differently?
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Mar 10, 2011
I'm in one movie clip and want to remove an event listener set in another movie clip
the following code brings up an error
TypeError: Error #1010: A term is undefined and has no properties. at GemoroBovoMetzia23b_fla::Draw_Tool_7/toolsbtn()
So in my toolsbtn function I have written the following code which doesn't work
Object(root).slides_mc.help_btn.remove.EventListener(MouseEvent.CLICK, Object(root).PresentationHelp);
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Jul 5, 2011
i have got all my public vars for sound class but im having trouble on how i would execute them because i normal would use event listener but its OOP lol so how do you get that functionality ?code in star.as file:
package {
import flash.display.MovieClip;
public class star extends MovieClip {[code]......
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Mar 20, 2012
i have a movie clip named "contact" inside this movie clip made the same object into a 2nd imbedded movie clip named "em_contact" inside this I did a frame by frame animation and added a new movie clip symbol of a piece of paper named contactbtn_mc on this frame, I added an event listener for a click that acesses on the root level a symbol named contact_mc i told it to go to and play frame 2 that plays out an animation of this object moving into the screen.
my problem here is i asked earlyer on how to stop the em_contact to stop listening for the mouse click once it is clicked. I made the code it come up with no errors but it does not stop the event listener the event listener is still there bellow is my code.
import fl.transitions.Tween;
import fl.transitions.easing.*;
import fl.transitions.TweenEvent;
import flash.events.MouseEvent;
[code]....
what i want to happen here is for the event listener once it is click to stop listening for that event becuase i have a mouse event inside the "em_contact" movie clip on an object named "contactbtn_mc". and that one has a click event on it as well but when i click on the contactbtn_mc the animation above plays out as well.
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Jan 19, 2012
I have encountered a bitmap problem while embeding my image into my project. Since event listeners don't work on Bitmaps I am having troubles on what to do next so I can use event listeners on my image. Main Class - The section that adds the image in the class:
[Code]...
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Mar 19, 2012
so i have an event listener a mouse click in a movie clip name "em_contact" i also have an event listener after an animation plays out on an object called contactbtn_mc, How do i tell Flash once em_contact is clicked dont listen for that event any more?
my code is below
em_contact.addEventListener(MouseEvent.CLICK,gotocontactanimation);
function gotocontactanimation(EvntObj:MouseEvent):void {
[code]......
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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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Jul 7, 2011
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.
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Feb 19, 2010
public function GlobalSolutions()
{
Navigation(' Home ', 'index', 235, 0x97F9EC);
Navigation(' Office Supplies ', 'Office_Supplies', 295, 0x97F9EC);
[code]....
I want to remove the appropriate child (e.currentTarget) and create a new child in its place with the next line, but it doesn't work. What do?
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Nov 17, 2011
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?
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Feb 23, 2011
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.
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Feb 27, 2007
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.
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Aug 20, 2009
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:
[Code]..
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May 13, 2010
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.
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Jul 8, 2011
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]..........
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Nov 18, 2011
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.
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Jul 30, 2009
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:
test01.abtn.addEventListener(MouseEvent.ROLL_OVER, mouseHandler);
test01.bbtn.addEventListener(MouseEvent.ROLL_OVER, mouseHandler);
test01.cbtn.addEventListener(MouseEvent.ROLL_OVER, mouseHandler);[code]....
It is only targeting the movie clip, not the buttons inside the movie clip.
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Jan 7, 2010
how to add an event listener to an event from a custom class. Here are the relevent lines of code (I think) from the class:
[Code]....
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Nov 3, 2009
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
[code]....
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Apr 20, 2010
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()
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Mar 13, 2010
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:
[Code]....
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Oct 23, 2009
I am trying to get this simple event listener to work.
function moveBoarder(boarder:MovieClip, movement:Number, rotationAmt:Number):void
{
boarder.y -= movement;
boarder.rotation += rotationAmt;
[code]...
understand this error message "ArgumentError: Error #1063: Argument count mismatch on making_modular_fla::MainTimeline/moveBoarder(). Expected 3, got 1."
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Feb 23, 2009
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.
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Mar 15, 2011
I'm having trouble adding a cuepoint listener to a dynamically loaded .flv which targets a dynamically loaded .swf. I'm also adding cuepoints via actionscript.
Basically everything loads okay but I get a compile error in the the function cuePointHandler when referencing mc_slideLoader.
Scene 1, Layer 'Actions', Frame 1, Line 601061: Call to a possibly undefined method gotoAndPlay through a reference with static type flash.display:Loader.
I'm still a rookie with AS3 so I'm thinking the Loader class doesn't have a gotoAndPlay property and some how I have to get it to act like a MovieClip?
Here's the actionscript.
ActionScript Code:
// using Flash version CS5
import fl.video.*;
import fl.video.FLVPlayback;
[Code]....
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May 19, 2009
I have a simple roll over animation. After the roll over, is there any way to disable the event listener so that the animation will play completely before any further interaction happens? Then re-enable it so it can be rolled over again? [code]...
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Jul 13, 2010
I have a rollover function that sets alpha values, and i also have a click function that sets the alpha even higher on click. I also have a roll out function to return it to normal when roll out. The thing is i want it to hold the high alpha value on click because that is the web page is selected. It works, but the second i rool out or roll over, it sets the value back. [code]...
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