ActionScript 3.0 :: Accessing Display Object On Stage From Another Class
Jun 8, 2011
I've googled this to no avail, I've only found how to manipulate the stage itself and not a display object on it,I have a movie clip on the main timeline with instance name displayName. I created a button that should change what frame displayName goes to (in order to...did you guess it?! diplay the Name of the button.So I am trying to write the code in a reusable fashion and have the buttons all linked to a class called GeoPuzzle. Inside GeoPuzzle I instantiate a touch event and run the code. However, the function has to be able to change displayName in the main part of the timeline and, of course, the compiler says displayName doesn't exist because I'm in a class and I'm talking about the stage.[code]How can I tell displayName to change it's current frame from within display object class?
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Similar Posts:
Jan 6, 2011
I have created a class, call it Class1, that has various objects drawn on the stage (drawn in the IDE). It also has a function, called setColour, for changing the colour of those objects. The function works fine if I call it from within Class1.
Now I have another class, call it testClass1, that imports Class1 and calls the setColour function. First of all, none of the stage objects from Class1 are visible. Secondly, when setColour tries to modify the colour of an object, I get the error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
This is the code for testClass1:
ActionScript Code:
package
{
import flash.display.*;
[Code].....
So, what is the problem? Is it possible to change objects that are drawn on the stage of an imported class?
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Oct 11, 2010
I was wondering if there is a simple way to access variables from a class object, where the variables are not actually a part of that class. So if you had an array defined on the first frame of the stage, and added some elements to it, you could use the methods of the custom class to manipulate the array's data.
Stage Frame 1
Code:
var myArray:Array = new Array( "apple", "banana", "pear" );
var myClass:someFunctions = new someFunctions();
myClass.addValue( "orange" );
myClass.sortValues();
[Code] .....
It might not seem logical as to why you would ever want to do that, but it's a very simple example, and it's the means I'm after, not the result. I'm creating a list of functions available to execute by a user via an input field. To keep things simple I made them the methods of a class. The issue, however, is that these methods need to manipulate objects which are on the stage, added and removed by a separate controller class. Passing the objects by reference to the class as a parameter would not be viable with what I'm trying to do either.
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Jul 3, 2009
I'm being really dumb today and I know this should be simple.....How do i access the stage from a class which isn't the Document Class? For instance, I want to create a tween which takes in the parameters of the stage's width? So I've written.....
ActionScript Code:
var myTweenX:Tween = new Tween(this, "x", Regular.easeOut, this.x, stage.stageWidth, 60, true);
[code].....
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Jul 23, 2011
i need some help to understand how to access a property of a child of a DisplayObject. within a class i have an object with the variable name: btnLMain i have assigned it a name property: btnLMain.name = "btnL";
btnLMain also has a property: btnLMain.clickNum = 0; // thats the one i need to access when i instantiate the class (btnL) containing this code in the parent class i need to access the property "clickNum" so i did this:
[Code]...
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Jul 12, 2009
I need to access a non-display list top-level (Parent? Ancestor? What's the correct term?) object from a display list object, and I don't know how.
In my code, ResultX is an instance of my custom class Result. Card is a sprite, a visual representation of the ResultX object, defined inside the Result class and attached (or removed) to the stage via a separate function inside the result class as needed.
I want to refer to the correct Result object when the user clicks on the corresponding card to call a function there. In accessing the sprite manually, ResultX.card works fine, but I don't know how to go upwards trough the path - card.parent (or actually target.parent, since it's done via event) just returns Main, of course.
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Jul 23, 2011
how to access a property of a child of a DisplayObject.
within a class i have an object with the variable name: btnLMain i have assigned it a name property: btnLMain.name = "btnLMain"; btnLMain also has a property: btnLMain.clickNum = 0; // thats the one i need to access when i instantiate the class (btnL) containing this code in the parent class i need to access the property "clickNum" so i did this:
var dispObj:DisplayObject = btnL.getChildByName(btnLMain);
displayObj.clickNum++;
but then i get the error: 1119: Access of possibly undefined property clickNum through a reference with static type flash.display:DisplayObject.
so then i reviewed documentation and from what i understand i am not able to access the property of the child of the DisplayObject as it is a static property...
so now i am trying to figure out how to access that property in the child Class.
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Jul 3, 2009
How do i access the stage from a class which isn't the Document Class? For instance, I want to create a tween which takes in the parameters of the stage's width?[code]
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Nov 17, 2010
I have the Dynamic Text field that has an instance name on a mid-timeline frame in Flash CS4. I have a class that inherits from Sprite, and which is always added to the stage on instantiation. How can I get a reference to my Dynamic Text instance from this class?
Example:
My Main class (linked in Flash's publish settings) goes like this:
protected function beginGame(e:MouseEvent){
gotoAndStop(8);
var game:GameContainer = new GameContainer(41,8);
addChild(game);
game.x=36;
game.y=128;
}
Game Container extends MovieClip, and draws some pretty gfx. On Frame 8, in the Flash IDE, there is a Dynamic Text element instance named "scoreText". I want to access this from the GameContainer class. Possible?
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Oct 22, 2009
I have a library swf (asset.swf), it's document class binded to Asset.as, and in the Constructor function of Asset,[code]as known to all, we cannot visit the stage attribute before the display object added to the stage.so, when my loader.swf try to load asset.swf, it throws exception and the loading come to failure is there some one tell me how to load the asset.swf? I cannot modify the asset.swf.
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Apr 8, 2009
I seem to have a problem with accessing MC on stage. For example, if in my class I try to do something like this:
back_next_nav.alpha = .3;
I get the error: 1120: Access of undefined property back_next_nav.
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Dec 19, 2010
I have a main document class with another class instanciated (mouse follower.as) within it. I want the mouse follower class to access a stage instance. How is this done?
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Aug 3, 2009
im still trying to get into the whole oop thing but I still have some things that i dont understand.I have a movieclip on stage that i want to access using an external class that lives in a different folder.Is there a way to access movieclips on stage from external classes or that i have to create a connection between the document class and then send the movieclip instance using a class method ?
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Feb 7, 2012
I need to set properties of buttons on the main stage from the current class. How would I do this?
I have multiple buttons on my stage. Each representing a chapter in a movie (from frame x to frame y of the movie).
When I push one of them, the movie plays. When it gets to the end, it should continue to the next segment/chapter. This works, but now I need to highlight the current button, not let the button I pressed be highlighted forever..
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Jun 14, 2007
access one instance of a MovieClip on the stage (blue_mc) from within the class file of another MovieClip (red_mc).e.g. One instance of "Blue" on the stage called "blue_mc", and one instance of "Red" on the stage called "red_mc". Both symbols are linked to class files (Blue.as and Red.as).In Red.as, I set up a function to listen for a mouse down event. When this is triggered, I want to move the instance blue_mc. At the moment, though, I can't seem to get a reference to blue_mc.I've looked into the new stage and root properties, but even though blue_mc is on the stage, it cannot be accessed using stage.getChildByName( "blue_mc" ) either.
Code for Red.as:
Code:
package {
import flash.display.MovieClip;
import flash.events.MouseEvent;
[code]....
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Aug 29, 2009
I am trying to access the x and y properties of the stage so I can set an objects' x and y properties to place it on the center of the stage:
this.x=stage.stageWidth/2;
this.y=stage.stageHeight/2;
The call to instantiate the object(*.fla):
[code]......
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Feb 5, 2010
When I debug this, it gives me an error saying that it cannot access the stage because it's a null property.
ActionScript Code:
package {
import flash.display.MovieClip;
import flash.display.Stage;
import flash.text.TextField;
import flash.events.Event;
[Code] .....
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Feb 28, 2012
I am trying to access a property that belongs to the stage, from a class. For example, let's say I add a textfield with an instance name of "magic_txt" on the stage. In the Document Class, I am able to access magic_txt and update the field like so:
magic_txt.text = "Magic Text"
However, since I would like to work in classes, I am having a difficult time figuring out how to access the property "magic_txt.text" from a class. I know I need a reference, but I am unsure how to set this reference.
I am coming from a strong background in Visual Basic, and in Visual Basic, the way to access a form property is to call the form name (dot) object. In actionscript, it doesn't seem to be as simple.
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Mar 3, 2009
I have a class and the class must adapt itself whenever the stage resizes.
Now something could look like this, but it won't work:
Code:
package {
import flash.events.Event;
public class ResizeClass {
[Code]....
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Apr 11, 2009
1.I have a MovieClip in the Library. There is a named and dynamic text box in the MovieClip. In Frame 1 of the .fla, I construct the MovieClip from the class StatusBoard and add it to the stage. There is one setStatus method in the class to set the text. This works fine.[code]
2.I have a bunch of buttons that I created from a class called LinkButton.as (they are MovieClips, not _btn buttons). FWIW, they are attached to other MovieClips, but they work fine. The trace output is fine. What I am trying to do is have the rollover change the text in the billboard.[code]
3. In lay terms, I used addChild to add a MovieClip with a dynamic TextField to the stagw and I want MovieClip buttons created from an .as class to be able to change the text on a rollover.What I can't seem to do is actually reference the billboard that I added using addChild from the .fla.The buttons work and trace the desired text, I can't seem to send that text to the billboard.
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Aug 20, 2009
I am trying to learn how classes can interact with each other and I came across a problem I can't solve. On my stage I have a MovieClip called "myMovieClip".
[Code]...
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Apr 30, 2010
I have drawn a box on stage and turned it into a movieclip called sidePanel, within it I place a checkbox. My document class 'Main.as', ie the class called upon by the flash file, creates a class of name Class1. So we have .FLA (The Stage) -> Main.as -> Class1.as Now from the Class1.as How to get the checkbox status, ie checked or not, from within my class1.as ?
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Jul 28, 2011
Using Flash CS5 Professional I have created a symbol, dragged it onto the stage, and given it an instance name of GreenLight1. If I want to make this visible from the document class, I can simply do the GreenLight1.visible=true; and poof it's good to go when I test the file. As long as I stay in the document class I am good to go, but now I'm trying to move to another class and hitting ALL kinds of trouble just trying to get Flash to allow me to access this simple object. All I am looking to do is have this GreenLight1 go invisible (visible=false) when a certain condition occurs in this new class and Flash just won't let me access GreenLight1 at all. Things I've tried thus far:
stage is passed to the class and is referenced by _stage and is working just fine when I do _stage.addchild or anything like that. So I have tried "_stage.GreenLight1.visible=false;" and I get "ReferenceError: Error #1069: Property GreenLight1 not found on flash.display.Stage and there is no default value." My document class extends Sprite, so I figured I'd try the root function. So I tried "Sprite(root).GreenLight1.visible=false;" and I get "1119: Access of possibly undefined property GreenLight1 through a reference with static type flash.display:Sprite." I tried to create the Resource class as described therein. To which I came across the same problem that I started with in that it doesn't know what GreenLight1 is to begin with so I got "1120: Access of undefined property GreenLight1." Here is my code for Resource.as (am I supposed to pass something to this class from the document class?)
[Code]...
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May 13, 2011
ActionScript Code:
//Main.as -- document class
public var content:Content;
something something ;
[code]....
What I need to do in Carousel.as is that, get the images in the MC to carousel (d'uuh).So, how do I get those objects from the Carousel.as class? I have declared the names of things in it as public vars but no luck so far.
Hierarchy of content:
content --on some frames-->carouselcontent(named in IDE - of Carousel type)-->image1, image2, image3(all named in IDE)
Hierarchy of all:
stage-->content(Content.as)-->carousel(Carousel.as)
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Nov 14, 2010
I have a movieclip in stage with instance name 'ts'.
I have a class Test.as
How should i refer to MovieClip 'ts' in stage from my Test class. Say for example I want 'ts' to gotoandstop at frame2.I tried root.ts but received a error.
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Jan 10, 2011
What is the best way to accessing movieClip from a flash stage in AS3 Class? And what if the as3 class it's in a package, outside the Document Class?
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Apr 23, 2010
How can I access objects and modify their property that is ALREADY placed on the stage using external classes (AS file)? I 'm a newbie of AS3 and followed some tutorials about AS3 not long ago. For I learned scripting in AS3 can be done using AS file rather than script on Timeline. But I have a question. How can I "find" and "modify"the objects on the stage, or inside a MovieClip , in AS3?
For example, I have a file call Stage004.fla which have no document class linkage. I place the MovieClip "StageMain" which links the Stage004.as on the stage. StageMain has a textfield in it named "textFieldStage001". The Stage004.as is ran using "Event.ADDED_TO_STAGE" since StageMain is on the stage. I create another AS file WindowRename , to test can I modify the text in "textFieldStage001".
Then the famous error #1109 occurred.
"1119: Access of possibly undefined property textFieldStage001 through a reference with static type Class."
ActionScript Code:
package {
import flash.display.Stage;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.display.MovieClip;
public class Stage004 extends MovieClip{
[Code] .....
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Nov 14, 2010
Iam new to actionscript 3.0. I have a movieclip in stage with instance name 'ts'.
I have a class Test.as How should i refer to MovieClip 'ts' in stage from my Test class. Say for example I want 'ts' to gotoandstop at frame2.I tried root.ts but received a error.
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Dec 10, 2010
How do you access the stage from a function in a document class file? I tried a fairly simple:
ActionScript Code:
var main:MovieClip = new MovieClip();
addChild(main)
var _stage:Stage = main.stage;
trace(_stage);
The result was null.
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Nov 28, 2007
I'm trying to link a clip to a class, and it goes well until I try to access MovieClips or TextFields placed on the stage within that clip from code in the class. My code is below; there is a TextField called output_txt on the stage within this clip.
class Main extends MovieClip{
public function Main() {
//trace("123"); <--if I replace the line below with this, it traces nicely
output_txt.text = "123";
stop();
}
}
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