ActionScript 3.0 :: DisplayObject Dispath Event?
Apr 12, 2011
I embeded a png format picture and set class like Axe:Class;,and set a variable like picisplayObject,and point pic to an object,var
pic=new Axe();
added it to the display list:addChild(pic);
then i added the eventListener, pic.addEventListener(MouseEvent.Click,_doSomeThing );
private function _doSomeThing(e:MouseEvent):void{
//process
}
but nothing happens,the complier doesn't report an error or warning something.then i created a wrapper Sprite object and add the pic to the wrapper object,made the wrapper object as the event dispatcher,then every thing works.As far as i know,DisplayObject is added to the stage,but why it doesn't work?
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Dec 23, 2008
I have a class linked to a library MovieClip. Several public instance variables in the class point to other DisplayObject's which are children of the class.Is Event.ACTIVATE the correct event to indicate that all ofthe children have been instantiated?
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Jun 30, 2011
Does removeChild clear the associated event listener related to those childs?
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Feb 7, 2009
What is the proper OOP method of communicating between classes that are not on the display list?
For example: The Document class instantiates a new class just for loading in different XML files. This XmlLoading class should let the document class know when the xml has been loaded and parsed so that the interface can be built out.
From my understanding, events can only be listened to and dispatched through the display list, but since there is nothing visual with this xml loader, it doesn't make sense to me to make this class extend a sprite and add it as a child of the document class.
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Nov 4, 2009
I'm writing a class that really doesn't need to be anything related to a displayObject. It's really more for organizational purposes, than anything else. It's there to handle 1 thing, and 1 thing only. However, I want to have it dispatch an event when it's done so that nothing gets ahead of itself, and I don't end up running functions before the SWF has finished setting itself up.
Simply using the ActionScript Code:
dispatchEvent(new Event("masterFinished",true));
Method isn't working, as the class is. I keep getting the:
PHP Code:
1180: Call to a possibly undefined method dispatchEvent.
However, if I change the class to extend Sprite, and then add it to the Stage as a displayObject, then it works just fine. Is there a way to get the class to dispatch an event without turning it into a displayObject or writing a custom EventDispatcher (I'm assuming the latter would work, but I'm not positive...).
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Dec 20, 2010
I'm trying to capture the redraw event for some MovieClip / Sprite objects that are in a Scroll area.Ideally, should be able to capture the event when Flash Player itself redraws the objects as can be seen with "Show Redraw Regions" in FP Debug.I've tried to use the Event.RENDER to capture this, but it even fires when the object is not visible / redrawn.
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Aug 23, 2009
I have a SendData class that sends form info to a php script. It is a static class that does not extend anything. I want to be able to dispatch an event if there is an error, or when it gets info back from the server. I have a custom event class that I have been using to dispatch events like this, but I have only used that in displayObject extended classes.The problem is, it seems like something has to be a displayObject based class to dispatch events. I know there must be a way to do this, but I'm having trouble finding it in searches.
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Oct 26, 2010
I would like to be able to quickly check if a given DisplayObject is a descendant (not in the inheritance sense - ie. child, grandchild, great-grandchild, great-great-grandchild, etc.) of another DisplayObject. There doesn't seem to be a native way to do this and I can only think of two ways to achieve it: Create the mother of all nested loops. Seems a bit, I dunno, wrong? Dispatch a bubbling event at the 'child' and check if the potential 'parent' receives it.
[Code]...
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Apr 12, 2011
I have editable grids which are 2-way binded to my model. What I want is to validate my data when user edits any cell before it get updated in model. I have applied my validation at ItemEditEnd handler, but, I want to apply validation in between itemEditBegin and itemEditEnd events.
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Aug 22, 2011
I hava a custom component and it contains a child icon. If I add a mouse-click event listener to both component(click-listener1) and icon(click-listener2), the event dispatched sequence is click-listener2, then click-listener1. I can understand it. But if I add a custom event to component (listener1), and mouse-click event to icon(listener2), when icon is clicked, the component will dispatch the custom event. In my test, the event dispatched sequence is listener1, then listener2. It doesn't match with event-bubbles rule.
In my opinion The custom event is dispatched in listener2, which triggers listener1. Why event flow sequence is not listener2, listener1?
In component.
icon.addEventListener(MouseEvent.CLICK, iconClickHandler);
private function iconClickHandler(event:MouseEvent):void
{
[Code].....
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Apr 8, 2010
I've come across a pretty bizarre bug in my code when working with level generation in a side-scrolling platformer I'm trying to make... I've been desperately trying to debug it for the past 2 days! I have a movieclip (exported for AS) called Section1, that contains the first section for a level. It's basically a huge movieclip containing other movieclips; this Section1 movieclip contains the graphics for the level, as well as collision detection (the graphics are .pngs converted into movieclips, the collision detection is transparent rectangles converted to movieclips). FYI, it's a BIG movieclip... roughly 3400 pixels wide.
So, since it is the 1st section of a level, I have it spawn at the beginning of the game. However, I need to access all the platforms, walls, and graphics inside section1 from inside AS. So, here's the code I am using to do this:
public var s1:Section1;
public var platforms:Array, walls:Array, levelGraphics:Array;
...
// in Main's constructor now:
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[code]....
Initially, it works... I've traced the data in the arrays in my update method (run every frame), and I can see that the arrays contain displayobjects... for a split second, that is. Seemingly out of nowhere, the values for all the elements in the arrays become NaN! I think to myself... of course these DisplayObjects are "not a number"... they're displayobjects! Of course, this renders my arrays useless, since I can no longer access the data I need to do collision detections!
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Oct 13, 2011
I can rotate it, or modify>transform>rotate +/- value
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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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Sep 4, 2008
I have 2 sprite which I create near the beginning of my video application. A bg and screenOverlay. On the first load of the file all is good but when I navigate away and then return to the swf my bg and screenOverlay do not get added to the displayList. I have a example up here at [url]...
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May 19, 2010
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[code].....
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Jun 5, 2011
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Jun 29, 2011
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Oct 18, 2011
I have a grid of DisplayObjects that when I put a glow on any of them, the glow overlap the other objects.
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May 19, 2009
I am trying to understand the interaction between Flex UIComponents and (Flash?) DisplayObjects... But it's not clear to me what the UIComponent class "adds" to DisplayObject. So, what can a UIComponent do that a DisplayObject cannot?
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Dec 31, 2009
ActionScript Code:
mc.addEventListener(MouseEvent.CLICK,clic);
function clic(evt:MouseEvent){
var clip:MovieClip=evt.target as MovieClip;
removeChild(clip);
}
1) Why it's also possible write removeChild(DisplayObject(clip)) and for what? In which case it's necessary?
2) if I write var clip=evt.target it's works too but if I write var clip:MovieClip=evt.target it doesn't work. Why? It's a movieClip that should go in the variable var.
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Aug 16, 2010
I am trying to store data in an object about different objects, but right now i am using their names. This was working at first but if I have 2 movieclips of the same class (from the library), then their children will both have the same names and this messes with my data storage.
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Apr 8, 2009
I'm trying to get the same effect as thiI'm almost ready to complete it but I get this warning and my script crashes."Warning: 3D DisplayObject will not render. Its dimensions (4278, 3977) are too large to be drawn."To make this kind of effect I use the rotationX function and when I zoom in I tween the "z" property. I dynamically generate all thumbnails and show them as a grid using some XML data.
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Dec 27, 2009
i'm looping though a display object and trying to reset some button. the issue i'm having is i'm getting and error:1119: Access of possibly undefined property menuText through a reference with static type flash.displayisplayObject.on the line where i try and target obj.menuText below. the weird thing is that this same code works when the actionscript isn't in a document class. i think i'm importing all the classes i need. also in the document class i had to add the MovieClip(obj) as pointed out below or i'd get an error similar to the one about.why moving this into a package is causing this?
public function resetMenu() {
//Loop through all of the menu itemsd
for (var i:int=0; i<menuHolder.numChildren; i++) {
[code].....
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Jul 18, 2010
I have found some weird behavior, try this:
Code:
var test_x:Number=0.0000354;
var spr:Sprite=new Sprite();
[code].....
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Sep 15, 2010
I'm loading in an external swf with the code below (which works great), but occasionally I need to clear out "gameHolder" with a call of "removeChild(gameHolder);" but it doesn't work. I believe it is because the contents of "gameHolder" is a displayObject instead of a movieClip.
Code:
function load_game()
{
var mLoader:Loader = new Loader(); [code]....
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Feb 25, 2009
Firstly, I've created a global variable called mc to store a movieclip instance:[code]Later on inside a function, I've created a new instance of my movieclip and added it to the stage.[code]Now, this is working fine most of the time. But at one particular point in my program, after many other things have happened, when trying to remove this movieclip it throws the 'display object must be a child of the caller' error.So, I'm thinking if mc isn't a child of the stage, what is it a child of? Tracing mc.parent returns null - so it seems to be telling me that the parent (which was definitely the stage when it was created) has wandered of somewhere and abandoned my movieclip!I have no idea how this has happened, and as the whole program is several thousand lines long I can't post it here. So, does anyone have any idea what might cause a display object which is added to the stage to become orphaned like this?
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Nov 9, 2009
My friend and I are working on a flash project in actionscript 3, and we are trying to interact with the timeline of a DisplayObject (such as stopping, playing, gotoAndStop/gotoAndPlay), the same way you would if it was a MovieClip. None of the regular commands to navigate the timeline are working on it. Is there any way that we could treat it as a MovieClip or inteact with it as if it was one?
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Mar 6, 2009
At startup I want to know in AS3 if a DisplayObject has been mirrored in the X or Y-axis during artwork. Basically I want to know if a MovieClip got a negative scaleX or scaleY after using free-transforms.
myDisplayObject.scaleX and myDisplayObject.scaleY always starts out positive regardless any mirror actions during artwork.
The two functions I desire are:
function mirroredInXAxis(dpo:DisplayObject):Boolean;
function mirroredInYAxis(dpo:DisplayObject):Boolean;
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Mar 3, 2009
I want to know which DisplayObject that is visible atposition x,y. Unfortunately, hitTestPoint returns true even ifanother DisplayObject lies above and blocks all visibility. Forexample:
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