AS3 :: Flash - Passing Variables From Parent To Child?
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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Jul 26, 2010
how can I pass a variable from a parent flash file to a child flash file which it calls?We have a parent flash file which imports various child flash files based on instructions in an XML file. It's probably easier to see an example - opg2DOTcoDOTuk/flash/yay.html (replace the DOTs, couldn't post an url due to restrictions) - the text above each page, and the 'enlarge page' lightbox links are all in seperate flash files (one per double page) which are brought in, depending on the pages you are looking at, based on the instructions in an XML file which looks like this...
<page ani_swf="pages/text1.swf">pages/white.jpg</page>
<page ani_swf="pages/text1.swf">pages/0001.jpg</page>
<page ani_swf="pages/text2.swf">pages/0002.jpg</page>
<page ani_swf="pages/text2.swf">pages/0003.jpg</page>
etc, where the swf is the header flash file containing the text and one or two lightbox links, and the jpg files are the page images that appear.We had to repeat the imported child flash file because of a glitch when you go backwards through the book otherwise.
This system has been fine for us up until now but recently we've had to look at making it a dynamic system, so the content of the book can be varied depending on a variable being passed into the parent file via FlashVars...
<param name="FlashVars" value="zone=1" />
<embed src="newbook3.swf" FlashVars="zone=1" ....etc
This makes the book load an xml file called "1"). This is fine, except we also need to vary the 'enlarge page' target images to match.The 'enlarge page' links are currently hard coded into each child flash file, like this...
on (release){
getURL("javascript:SWFDelegate('imagename.jpg','Ex ample');");
}
- What we've tried so far:
1. Trying to pass the variables in querystrings from the XML
eg.
<page ani_swf="pages/text2.swf?var1=image1&var2=image2">pages/0002.jpg</page>
<page ani_swf="pages/text2.swf?var1=image1&var2=image2">pages/0003.jpg</page>
with the child flash setting it's action like this...
on (release){
var image1 = var1 + ".jpg"
getURL("javascript:SWFDelegate(image1,'Example');" );
}
I'm not sure if the syntax here is correct. We have to add the ".jpg" in here because, as far as I understand it, you can't pass "." in a querystring.
2. Passing the variables for the child into the parent
I read somewhere that variables passed to a parent are automatically available to a child. Not sure if this is true, but it didn't work for me when I tried it like...
<param name="FlashVars" value="zone=1?var1=image1&var2=image2" />
<embed src="newbook3.swf" FlashVars="zone=1?var1=image1&var2=image2" ....etc
Combined with...
on (release){
var image1 = var1 + ".jpg"
getURL("javascript:SWFDelegate(image1,'Example');" );
}
...in the child button action.
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Apr 17, 2009
I have a Parent.swf which loads a child.swf.this is a desktop application and the problem is
while loading the child.swf i have to pass a variable from parent.swf to child swf. how can i do it.can anyone give me an implemented code.
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Nov 10, 2011
I have two swf, A.swf and B.swf: B.swf is a child of A.swf.i want to access the variable of a.swf in b.swf.Is it Possible?How Can i do this?
[Code]....
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Oct 31, 2011
I'm having some trouble getting to grips with how a child can refer to the variables of parents. Here is my Main.as :
package
{
import flash.display.MovieClip;
public class Main extends MovieClip
[code]....
Using trace(MovieClip(parent).i) instead I get:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at Child()
at Main()
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Oct 29, 2010
I need to pass information from a child component (Flashbuilder 4) up to its parent.
The information comes from an event object. Do I need to use a custom event?
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Apr 7, 2011
I have a simple BOOK script where I have 10 pages (for example purposes). Each page has a vocabulary word on it. Currently, I simply created a vocabulary MC separately for each page and it works fine. Problem is, that leaves me with 10 Vocabulary pages and I would rather have 1 that loads info based on a var on the main page.
WORKING SCRIPT
var loaderZ:URLLoader = new URLLoader();
loaderZ.dataFormat = URLLoaderDataFormat.VARIABLES;
loaderZ.addEventListener(Event.COMPLETE, loading);
[Code].....
I am getting the word "depressed" from page 1 (verified by trace) Unfortuntely this does not work.
If I change the last line of code to:
VocText.htmlText = loaderZ.data = word;
Then it outputs the word DEPRESSED to the text field VocText but does not return the value from the txt file.
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Jul 23, 2009
I've been using Flash for years but only recently started doing anything with AS3. I am using SlideShowPro and SlideShowPro Thumbgrid which are both AS3 components, hence the move. I am finding the move incredibly frustrating.Anyway, on to my problem. My parent movie is loading a child SWF. The child SWF needs to read a variable from the parent but I can't work out how as the old syntax is not working.My loading AS looks like this:
ActionScript Code:
var loadit = new Loader();
addChild(loadit);
[code].....
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Sep 6, 2010
What's the strategy for getting a child to access variables in a parent.I have a Main class.In that class I create instances of a Unit class and save those to an array.In the Unit class, I want to access the x and y coordinates of other instances of the Unit class.So I'd like to access that array I made in the Main class.I tried:this.parent.theArray[i].xbut that doesn't work. I tried using the get command, but I don't really know how to, so my efforts failed.
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May 4, 2010
I have TestA.as the base class file for my TestA.fla that has nothing but a movie clip with instance name box.
TestA.as
ActionScript Code:
package
{
import flash.events.MouseEvent;
import flash.display.MovieClip;
[Code].....
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Nov 22, 2010
I have a movieclip walls and a movieclip character (both on the same timeline). I want to access and change a variable inside character from the walls timeline.
ActionScript Code:
MovieClip(parent).character.somevariable = true;
...not working.
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Feb 11, 2011
Wondering how to do this:
Parent swf has a class loaded, lets call it 'GlobalUtilities'. Parent swf loads in child swf. Child swf wants to use some of the 'GlobalUtilities' class that is in the parent.
How can I accomplish this? The problem I'm having right now is, when I export the child swf, I'll just error out since it can't find the reference (obviously, since it's not loaded into the parent yet).
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Mar 8, 2012
im working with my main FLA and a script for it child.as i have created a variable in the parent, "svar:Number = 0;" i would like the child to be able to modify this variable when certain triggers are met i've tried something like this in the "child.as" but im assuming its probably much more complicated
[Code]...
im wondering if there is a simple command such as this to call upon an existing variable in the parent? if not, is there a way i can import the variables using the import command?
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Jun 21, 2008
The external swf is located at:[url]....In the parent.swf, I put System.security.allowDomain(url....)When you click a button on the child.swf it's suppose to trace data from the parent.swf, but it returns undefined.What am I doing wrong? I MUST access data from the parent.swf
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Sep 30, 2009
I am not sure if I'm being completely stupid here, so my apologies in advance. If I have an object on the stage for example:
ball:Ball = new Ball();
addChild(ball);
it already has .x and .y values as it is placed on the stage.Then I have some value inputs, such as force, angle etc.Now when I click an event listener I want it to activate a function in Ball that will move it from the values I have just set.My question is how do I carry those values across after the ball has already been place on the stage?
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Jan 7, 2007
how to pass variables from a parent swf to a child swf loaded into a movieclip container within the parent swf.
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Apr 11, 2010
i'm trying to assign a parent's variable from the parent's child
//Parent
public class Main extends Sprite
{
public var selectedSquare:Sprite;
[Code]....
i'm receiving this error, but i'm casting parent from displayObjectContainer to a Sprite so i have no idea why it's not working.
1119: Access of possibly undefined property selectedSquare through a reference with static type flash.display:Sprite.
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Sep 20, 2011
I have some variables defined in a child MC:
var first_nme = data.return_first;
var second_nme = data.return_second;
var email_addr = data.return_email;
var user_domain = data.return_domain;
var user_name = data.return_username;
I'm trying to use those variables in a parent movieclip/another movieclip.
[Code]...
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Oct 25, 2009
From the two .as files below, I get the following error when I run: 1119: Access of possibly undefined property importantNumber through a reference with static type flash.display:Sprite.
[Code]...
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Nov 7, 2010
I have several .as files. The first that loads is Main.as;
package
{
import flash.display.MovieClip;
public class Main extends MovieClip
{
[code]....
So this MC gives the user the ability to type in their name and store it into the parents playerName variable. With the intention that I can refer to it at any point later in any other MC. It stores it okay, a trace proves that, but a problem comes when this movieclip is replaced by the new one ZoneSelector;
package
{
import flash.display.MovieClip;
import flash.events.MouseEvent;
[code]....
As you can see, there's hardly anything in the this .as file. But everytime the trace(MovieClip(parent).playerName) tries to run I get the following error;
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at ZoneSelector()
at Setup/onbeginGameButtonClick()
It's as if the ZoneSelector runs its entire script before the playerName is set..or something like that.
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May 4, 2009
I am new to flash."I am unable to access the variables of child swf in parent swf after an action(button is clicked) is performed in child swf".
My problem is i had 2 swfs parent.swf and child .swf and i loaded the child.swf file in parent.swf using Loader class there is a textbox and a button in child.swf when we enter text in the textbox(say,notepanel_txt) and click on the button(say, mySubmit) the text present in textbox(notepanel_txt.text) is saved in the database using URLLoader and an variable called success(which is String type) must be available to parent. the code is as follows[code]...
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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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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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