ActionScript 3.0 :: Flash Calling Parent From Child
Jul 21, 2011
In my child constructor I use MovieClip(this.parent).blablabla() to retrieve info, yea I know I can pass it through the constructor, anyways I keep getting errors anytime I try to use MovieClip(this.parent) in the constructor, it gives a refrence error saying it's null.
Why doesn't that command work, is there a way around it (other than the constructor)? Is it because it's bad design? I'm calling a function that has alot of data, so I'm just passing this to the child and using the passed this data to call the parent atm, looking for a better MovieClip(this.parent) solution.
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Jun 21, 2011
If I need to call a specific function in the parent application from a child in a flex project, what's the best practice for this? Would it be to dispatch a custom event from the child and have a listener call that function? Or to directly call the function with FlexGlobals.topLevelApplication?
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May 23, 2011
May i know how to call child function(layer 2) in parent(layer 1)?
Layer 1 (Parent)
function changeAction():void{
changeColor();
}
This method will give me the error -> Call to a possibly undefined method changeColor.
Layer 2 (Child)
function changeColor():void{
trace("success");
}
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Jul 27, 2009
I have container swf which includes navigation that loads child swfs. Each child swf is loaded then visibility is set to false. Once a child ( an image gallery actually) is loaded it is possible to jump from image to image. What Id would like to be able to do is call a "clean up" function that returns the child to its initial state when anothor nav link ( a different gallery) in the parent is clicked. But I do not know how the syntax is supposed to be written or if its even possible.
Ideally it would look something like this in the parent container swf:
ActionScript Code:
function swapSectionIdentity(e:MouseEvent):void {
setChildIndex(background_home, 0);
getChildByName("identity_mc").visible = true;
[Code]...
the behavior I am attempting to avoid is when a child swf is loaded ( an image gallery) and then the child is invoked to display a particular image in it, afterwhich a main navigation link is clicked the current gallery is set to visible = false and a new gallery is set to visible = true. But when you return to the previous gallery the last image viewed is still showing. I want to be able to reutrn to galleries inital state as it is hidden. make sense?
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Mar 17, 2009
I have setup a simple video interface. The video player lives in the parent swf. The video list chooser is loaded as a child swf. In this child swf, I have some video buttons nested within two movieclips in order to facilitate the scrolling feature. I am trying to get the movie buttons to load flvs into the component flv player in the parent swf. I have declared the functions in the parent and I am trying to call them in the child:Code in the Parent:
function vid1(event:MouseEvent): void{
pubPlayer.source = 'vid1.flv';
}
[code].....
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Apr 14, 2010
I am adding a child .swf from the parent with a simple button. If this button is then clicked multiple times, the child is added multiple times. So I added the ".visible = false" to the button when clicked so the button cannot be clicked while the child is open.
Now, there is "Close" button on the child .swf that uses "this.parent.parent.removeChild(this.parent);" and would now need to set the parent button back to ".visible = true".
I have tried MovieClip.parent.parent.resetButton(); and parent as MovieClip.resetButton(); and many variations of the code. I get no errors but the code doesn't work either.
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Mar 29, 2010
I have uploaded a ZIP file that includes the following files:
- main.fla
- child.fla
You can download to review my code (very small 16kb): http:[url]...........This simple example has a main SWF file that loads a child SWF using the dynamic loader method. Below is the code in the main.fla file:
Code: Select all/*
MAIN SW
*/
import flash.net.URLRequest;[code]........
how do I get both parent and child SWFs to communicate with each other dynamically (to be able to call functions from each other, or pass variables)?
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Jul 18, 2010
I'm switching from as2 to as3 and everything was going swimmingly with my new site until i tried to use a _root call to a function on the main timeline by a loaded movieClip that is loaded nested into 2 other movieclips. the movieClip needs to tell the _root when it's done playing so the root knows to load the next one in line through a php call. Everything works except for the _root call. In as3 there's no such thing as root anymore so I figured no big deal, i'll just find out what the new thing is and holy crap wtf! I can't figure this out!! I've read from doing stuff like custom eventLisnters (which i am trying now) and casting the root as a movieClip and then I read this whole crazy tutorial on building an event structure and the proper MVC way of coding and blah blah blah ALL I WANT TO DO is tell the _root that the loaded MC has reached the end of its timeline. Basically if it were as2 i could just go _root.loadNext(); and it would work.how to make a loaded MC talk to the _root timeline and call a funciton from there?
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Dec 9, 2009
I am a Flash MX user, I have three files named PARENT.SWF, CHILD.SWF, and CHILD2.SWF. The PARENT.swf loads the CHILD.SWF, The CHILD.SWF loads, then the file CHILD.SWF loads another swf file: CHILD2.SWF
Now my question is: How can the file CHILD.SWF unloads itself to avoid overlapping with CHILD2.SWF on the screen. I try the command: removeChild(CHILD); from CHILD.SWF but it doesn't. work.
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Jul 29, 2011
I got a Parent Sprite, let's name it SpriteP, which holds inside it two other Sprites. Sprite1 and Sprite2.[code]Sprite2 is a rectangle. When I rotate it, of course, the height of its parent, SpriteP, GROWS. But I would expect that height to go back to what it should be when I'm removing Sprite2!And it does! If I remove Sprite2 while NOT being rotated, the height of the parent drops back to normal, 200.
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Jun 6, 2011
i am slightly confused about the parent and child relationship. lets assume we have several different instances, what would be difference of adding them all as children of the stage and creating a parent-child hierarchy between them(other than the access path).
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Jul 29, 2011
I got a Parent Sprite, let's name it SpriteP, which holds inside it two other Sprites. Sprite1 and Sprite2.
When Sprite2 is NOT rotated:
Code:
trace(SpriteP.width + ' ' + SpriteP.height); //100 250.
SpriteP.removeChild(Sprite2)
trace(SpriteP.width + ' ' + SpriteP.height); //100 200. -> works, 200 is good.
When Sprite2 is rotated at 90:
[Code].....
And it does! If I remove Sprite2 while NOT being rotated, the height of the parent drops back to normal, 200. But if I rotate Sprite2, the Parent won't update its bounds.
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Jun 16, 2003
I'm working on a Flash MX application which involves a Parent movie and a Child movie.
I've loaded the Child movie into the Parent movie using LoadMovie. The instance name of the Child movie is Child1.
In the Child movie I have a user-defined function called getChildXML (we don't need to get into more details about the function).
The point here is that I want to call the getChildXML function from the Parent movie. I've tried something like Child1.getChildXML(); but with no luck.
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Feb 5, 2010
[code]All clips are squared.Ok, on the PlayerPlane, there are little soldiers, which have hotkeys. The effect I'm trying to create is I want to position the GameStage so that the currently selected soldier appears in the center of the GameClicker clip.The GameStage is movable by the player (to scan other areas of the map)by holding the CTRL key, so it's easy to kinda lose track of where your players are.I have tried using localTo Global and globalToLocal techniques, but I think I'm lost on the actual math of getting the GameStage to move the correct distance so that the selected soldier is centered to the GameClicker.[code]
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Aug 24, 2010
I am trying to make a calculator where a user can select from a list of items. If a user clicks say "ITEM1", it should add the item to a "CONTAINER_MC". The problem i have is all my data is set inside an array containing names and prices like the code below.
[Code]...
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Oct 6, 2010
Here is a working script to drag drop a ball from the stage into another target mc:
ball.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
stage.addEventListener(MouseEvent.MOUSE_UP, dropIt);
function pickUp(event:MouseEvent):void{ [code]...
It works well but I'm new to AS3 and I am having difficulty amending this script to drag the ball out of a parent mc (instead of the stage) and onto another mc (the target mc). To explain: imagine a ball, a box, a tri, + more shapes all within a scrolling mc (initial parent), the user scrolls to select a shape, then drag-drops onto a target mc on the stage.The scrolling is no problem, but how would you amend the script above so that the ball can start inside a parent mc rather than on the stage itself?
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Jan 3, 2010
I got a "preloader" that creates an movieclip and loads an SWF. Now in the loaded SWF i want a close button to go back to the "preloader". The preloader isn't an actuall preloader but some sort of mainclip.Now i tried this:removeChild(MovieClip(e.currentTarget).parent.pare nt.parent)But i get error:ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.at flash.display::DisplayObjectContainer/removeChild()at MethodInfo-6()
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Sep 11, 2010
if I add a clip to the stage as a child and remove the parent and set the parent equal to null, does the child get collected and removed from memory? What if the child has an image loaded into it as its child?
In my application I'm loading a series of png images as overlays that can be tinted for customizing in this app. When I trace my memory, the basic app idles at 64,000 k. The exact second I load those overlay images it goes up to 205,000k. If I remove those clips and "clear" the stage I should go back down to 64,000 k if everything is removed and collected correctly, right? It's not, it's hanging at 215,000 k. Are my images being cached and that is the reason for the memory staying up? If so, how do I prevent that. Or upon removing the parent of the image how can I un-cache the image.
If a user switches between models and loads several different items then the application actually crashes the Flash environment because of too much memory usage. It also does the same to browsers.
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Nov 11, 2009
I have a parent swf which loads many child swfs (though only one is displayed at a time). My intention was to use the loaded SWFs document class to retrieve an array of objects to be assigned a tab index, combine this with the parent's own array of objects and apply sequential tab indices to them all. But what happens is actually that the parent's objects are assigned an index, but the external swf is unaffected. In fact, the external swf retains its automatic tab indexing, when I would expect that having set a value for InteractiveObject.tabIndex, automatic tab indexing would be disabled.
I've seen similar tales elsewhere. Most posts I've read are wanting to load an external swf, give it focus and loop through those objects, then close the swf and return to looping through the parent. However I would like loop through all objects as one. including manipulating the focus manager(s), and basically fiddling with every tab-related property I know.
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Sep 29, 2011
trying to on mouse over set the parent of the moused over text field to the highest depth child of its parent i tried both of these: [code] private function
[Code]...
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Nov 7, 2011
i want to pass the variable from parent to child .How Can i pass the Variable.Here i paste my code.
My Parent Class
public class PlayerStrobe_domaincheck extends Sprite
{
private var myService:NetConnection = new NetConnection();
private var _loader:Loader;
[Code]....
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Jul 29, 2010
I have an FlvPlayback skin, which works really well, except the custom button. Basically this button needs to be able to call a function in the parent movieclip (that loaded the FlvPlayback, which in turn loaded the skin).
I am not really a Flash developer, and have not found anything on Google relating to this. It seems like a simple issue, but I just do not have enough knowledge of flash.
How to call a function in the base swf which has a FlvPlayback movieclip, from a custom button in the skin file.
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Aug 21, 2010
I have an issue where removechild won't infact remove a child. I think its something to do with my dropTarget.parent issues. The concept of the code is that you drag a source onto a destination. When you drop the source onto the destination you will get a text field that says "Hello" or "Goodbye". The objective i want to achive is that once i drop a source onto the destination, removechild will remove any previouse textfields added. This is proving difficult.
[Code].....
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Feb 29, 2012
How do I do this? Inside the parent swf myVar value is set by query string value loaded in by swfobject var myVar = _level0.part; // i have the value 123 here ..all good so far
[Code]...
Always childLog.text is undefined :( - so how to access the value of myvar from the child?
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Oct 30, 2010
I am working on a component framework for myself right now, and was wondering if a child component should contain a reference to its parent. Obviously flash itself does this as part of the movieclip parent/child structure, so I figure it's okay to do this, but does this present any memory problems or anything, having references to the parent in the child? Would it be better to do some sort of lookup tree, just passing each child an array of GUIDs or similar which I could use to trace a component back to all its parents?
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May 26, 2010
Everywhere I've looked has instructed me to download plugins and addons because they're "superior." I'm just looking for a simple fade in/fade out when a child is added/deleted (if fadein is all I can get, I'll take it.) Here is a function I'm calling...
[Code]...
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Dec 9, 2010
I have a main.swf. I have loaded two child-SWFs into it, child1.swf and child2.swf.... There´s a videoclip inside child1.swf, can I stop that video from child2.swf?
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Aug 13, 2011
So i have a situation where i want to pass a object of a class say 'MyBigAwesomeClass' from a child to a parent. I import the class definition into both the parent and child. Now, if i load the child swf from a location that is relative to the location of the parent , all is fine, however the moment i load it using a full absolute path, it treats the definitions for 'BigAwesomeClass' in parent and in child as different and does not allow an object of the type 'BigAwesomeClass' to be assigned to an object of the same in the parent class.I am totally stumped, and have banged my head over ApplicationDomains, including using this code
loader.contentLoaderInfo.addEventListener(Event.COMPLETE,swfLoaded);
var context:LoaderContext = new LoaderContext(false, ApplicationDomain.currentDomain);
loader.load(new URLRequest(_file.url),context);
[code].....
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Oct 14, 2011
I'm trying to access some variables from my parent in my child MC.
Parent code:
var data_history:String;
function finish_checkUp(event:Event):void{
var checkUp_stat:String;
[Code]....
Now as you can see, i have tried the trace method, but with no luck. Flash doesn't report any errors regarding the trace method, but does report the two undefined vars (data_history). Ive tried to use the trace method above all the functions, at the top of the script, still the same errors though.
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Jan 10, 2012
I have a parent swf with fonts embedded in the library, which have export for actionscript set and a class name assigned. The patent swf loads a number of child swfs to which I'm trying to pass a textformat object using a desired font from the parents library. How can this be achieved. I have tried Font.registerFont(font class) and created a new instance of the font before setting the textformat, but this only works on machines with the font installed. In the child swf, the textfield text is set, then the textfomat applied with setTextFormat();
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