Professional :: Removing Event Listeners On Leaving A Frame
Mar 15, 2012
I have l modded some code that I am really happy with, it makes buttons bounce around for the user to try to click on when entering a certain frame.. I notice tha the code adds eventlisteners ENTER_FRAME to make this work, when you leave that frame there are now problems with null objects becuase the listeners are still on but the objects are not there anymore..
Ok so attempted solution - I can use a currentLabel on the main timeline to check if the correct frame is reached then use a function if (label is x) put listeners on else take them off... works but then I have to have these objects hidden on the timeline and then add visible=true/false to my framelabel listener.. This works but part of my functionality here is that these movieclips that move are buttons that the user clicks on and they explode and dissapear- but now they dont because I have a code that says on that frame they should be visible..
The only thing I can think of is to have a blank frame at the end of the explode and put a stop on it. Then add a gotoAndPlay(1) into my frame label code. Seems very ugly, you guys got a better way? Can I remove eventlisteners on leaving a frame? Is there a code like LEAVE_FRAME??
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Dec 14, 2010
OK, I am trying to get the following functions to load and unload the video to my main timeline when I go in and out of a frame. I tried on Enter_FRAME but it is now working properly and load many instances.
What are the listeners I need to do to call the functions of oCoach when enetering a frame and fclickCV when leaving a frame?
[code]...
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Nov 24, 2011
I have this in my constructor:
[Code]..
The problem is I get Error: Error #2094: Event dispatch recursion overflow. Why does removechild keep getting called if this.parent does not exist? Why doesn't removing event listeners work?
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Dec 16, 2009
If you have multiple event listeners running, is there any way to remove all of them at once rather than one at a time?
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Dec 17, 2010
I have a basic question about manually removing event listeners in actionscript 3.If I have a function like:
private function doStuff(event : Event):void
{
//let them save
var f:FileReference = new FileReference();
[code]...
How do I remove the event listeners when the saveDone function is called? Normally I just change the "add" to "remove" like:
f.removeEventListener(Event.COMPLETE,saveDone);
However, f is a local variable, and I can't get to it after the doStuff function ends.
private function saveDone(ev:Event){
f.removeEventListener(Event.COMPLETE,saveDone);
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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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May 14, 2009
I was just wondering--and it's probably an obvious question really--if I make an object null and that object had one or more event listeners registered, are the listeners removed?
for example:
Actionscript Code:
object.addEventListener(Event.SOME_EVENT,callBack);
function callBack(evt:Event):void
{
object = null;
[Code].....
In this case have I removed 'object''s listener when I made the object null?
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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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Nov 9, 2003
What is the correct way to refer to the dispatcher listeners in the following code so that I can remove them within completeListener()?
Code:
private function createLoader():void {
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[code]....
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Mar 21, 2011
I'm creating a class for a game, and I'm having a problem removing event listeners from movieclips in that class.In the class file I have an enterFrame event which puts the movieclips into motion - I want to remove that event listener when the movieclip is removed from the stage.I made the function 'public' in the class file and tried to target it as follows (animal is the movieclip)animal.removeEventListener(Event.ENTER_FRAME, animal.onEnterFrameHandler)
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Feb 15, 2011
Do you have to remove event listeners on variables with local scope? By this I mean...does the event listener still exist if the variable only exists as long as the function/method is running?
private function startSomething():void
{
whatever.start();
[Code].....
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Aug 18, 2011
I add an instance of this module to the dispay list and then remove it.Will the event listener attached to foo create a leak?A simplified module:
<s:Module creationComplete="init()">
<fx:Script>
protected var foo:Bar = new Bar();
[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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Jan 19, 2011
I'm trying to develop a catching game, just for a bit of fun and learning experience. I've been bouncing between tutorials and I've finally come to a point where I can't get any further. After you catch three sandwhiches, you lose and it takes you to an end screen, however, I'm unable to stop the listeners from being called, and when the game restarts, the food falls, but you're no longer able to catch it or keep score.
[Code]....
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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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Oct 12, 2011
I want to make a static function that I can use in all the custom classes.It should be some kill(); function that would remove the object from the stage as well as removing its event listeners. I made it in Document class, and it didn't work. Here's the code:
ActionScript Code:
public static function kill(e:DisplayObject)
{[code].....
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Jan 21, 2011
I have 3 frames each with a movie clip called map_mc. Each different map_mc have different objects that call the CollisionDetect class. Heres whats happening. objects from frame 1 will start freaking out when I goto frame 2. How do I remove only the event listeners from objects only on frame 1?
I have been trying this.currentFrame but the problem is that all the objects are inside map_mc on the first frame so no matter what it will always be 1. On the other hand MovieClip(root).currentFrame will always give me the current frame but wont tell me what the objects frame is relative to the stage.What I want to do is have something to this effect:MovieClip(root).this.currentFrame would output that this object is on frame 1 and MovieClip(root).currentFrame will tell me that the stage is on frame 2 so I can remove the listeners accordingly.
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Nov 28, 2011
Using CS 5.5, I am using a single scene with buttons that all appear on the first frame along with code snippet AS also on the first frame that when clicked, takes the user to a different frame. Everything seems to work fine, except, after you go to frame 15 and click on one of the buttons that take you to one of the earlier frames, the text from frame 15 still displays on those earlier frames. The text on frame 15 is on a different layer and does not exist anywhere else until frame 15.
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Sep 11, 2008
I'm working on a gunslinger game. I have numerous frames which correspond to different stages of the game. The frame that corresponds to the actual gameplay has a really involved ENTER_FRAME function attached to particular item on the stage. When the game is over (or an error occurs, or the network connection fails) I want to leave the gameplay frame and move to some other frame. When this happens, I would like the ENTER_FRAME function on the gunslinger to be removed because the player may finish a game and then re-enter the gameplay frame later after selecting a new opponent.
QUESTION: Can anyone recommend a good way to manage the keyboard event listeners, all the button event listeners, etc? As you might imagine, I have no reliable way to determine which frame might be entered after the gameplay frame because the frame change could be triggered by a variety of different reasons.
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Feb 23, 2010
I am using Adobe Flash Professional CS4 with all the latest updates. The FLA is an Actionscript 3.0 file. I am creating a basic flash site with several pages that change when the user clicks links on a left side navigation bar. on the pages are sub tabs that change out different content(text) based on what the user clicks on the current page. when they click a button it triggers an event listener, the event listener runs its function which changes the definition of an already defined (String) variable, and the page goes on to a frame checks what that variable is and then leads the movie to the correct frame that the corresponding content is on.
here's the issue: it works perfectly the first few times, and then the event listeners stop working, first one of them, then all three once i click one of the two available. i started this site before i even knew what a class was(regretably), and all the code is on the timeline in different frames.
[Code]...
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May 26, 2010
I'm trying a shooting game from an incomplete tutorial online. I'm trying to finish it off myself and hopefully learning more in the process but straight away I've hit a brick wall.The stage is 900 x 350. Bullets are fired from a turret near the center of the screen and will travel and eventually leave the stage at some point. I want to remove the bullet from memory and the display list once it has left the stage and can no longer be seen.I'm using a conditional if statement to check the x and y position of the movieclip, and if it outside the width or height of the stage then I want to remove it completely.
PHP Code:
stop();var angle:Number=0;var radiansToDegrees:Number=180/Math.PI;var degreesToRadians:Number=Math.PI/180;var currentTurretRotation:Number;var
[code]......
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Oct 20, 2010
I have a movieclip that contains two frames, each frame contains a different set of buttons.
it seems that i cannot add the event listeners to buttons that are not in my current viewed frame.
so.. problem one: is there a way to add event listeners to all the elements in the movieclip even if the elements are in a different frame.
problem two: after I added an event listener to some elements in current frame and then I move forward to the next frame and go back to the same frame, all the event listeners are removed and i need to initialize them again. is there a way to resolve the issue without the need to re-initialize the event listeners ?
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Nov 30, 2010
If you dynamically create a parent movieclip, and dynamically add a color picker to each clip, and add an event listener for each color picker, does a removeChild on the parent movieClip remove event listeners belonging to any of it's children?
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Oct 5, 2004
How do you remove the finger pointer icon from a button leaving the regular cursor when the user rolls over the button?
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Dec 21, 2011
I've got a 'powerpoint style' slideshow built in Flash CS5, AS3, using the basic template (ie as on frame 1 root to advance frames on cursor keys). All works perfectly until I get to a MC which has the following script (snippets):
[Code]...
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Feb 19, 2011
I am writing a little app, and have buttons and sliders on one frame 1 of the stage, and then a help screen on frame 2 of the stage. I have some event listeners attached to the objects of the first frame. When I move to the second frame, and then go back to the first frame, all the event listeners have gone out of scope, and no longer work. (at least that is what I think is happening). I think the best way would be to add something like add Event.ADDED_TO_STAGE listeners to each object, and have the listener function add the event listeners that I want for each item.
So I would have:
public function Document(){
super();
iSlider.addEventListener(Event.ADDED_TO_STAGE, added);
iSlider.removeEventListener(Event.REMOVED_FROM_STAGE, removed);
myButton.addEventListener(Event.ADDED_TO_STAGE, buttonAdded);
myButton.addEventListener(Event.REMOVED_FROM_STAGE, buttonRemoved);
}
In each of the listeners, I would add / remove the listeners that actually respond to the button / slider.
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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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Nov 3, 2009
wondering if there is an event that will be triggered when a text box loses focus or has been changed and then moved out? I tried Event.CHANGE but it fires everytime a letter is typed into a box. I am looking for something that would file once the focus leaves the box.
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Sep 1, 2010
I need to have scrub thumbs for video player load and unload repeatedly.
Something isn't getting cleared. Every time the thumbs are removed, there's a slight increase in the cpu baseline - something is piling up in memory.
Below is the relevant code:
Code:
function showScrubThumbs():void {
xmlLoader.addEventListener(Event.COMPLETE, xmlLoaded);
xmlLoader.load(new URLRequest("testThumbs.xml"));
}
[Code].....
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Jun 25, 2009
From my flash "home" frames, I have 4 buttons that take the user to different places on the timeline. One frame on the timeline includes a carosel of pictures that rotate and looks nice. I downloaded the carosel actionscript and xml documents online, I did not build them myself. Now, when I hit the "home" button to get back to the home frame, the carosel still lingers around. I would like to know how to hide it, or make it not come back at all when coming back to my "home" frame.
Here is my actionscript inserted in the frame:
import mx.utils.Delegate;var numOfItems:Number;var radiusX:Number = 1000;var radiusY:Number = 30;var centerX:Number = Stage.width / 2;var centerY:Number = Stage.height / 2;var speed:Number = 0.9;var perspective:Number = 130;var home:MovieClip = this;var tooltip:MovieClip =
[Code]....
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