ActionScript 3.0 :: Overriding A Setter From Subclass?
Jun 3, 2009
super.zValue(n) should be super.zValue = n ........ wowy Nothing to see here folks, just keep moving on I'm having some difficulties in working with the as3 way of overriding methods.. specifically setters. I'm a recent convert from working with as2 for a few years, so some of these quirks are beyond me right now.Here are my two classes:class tempBase in package core
Code:
package core
{
import flash.display.MovieClip;
public class tempBase extends MovieClip
[code]....
I do not have any errors for the override of baseFunction, but on compile I get the error 1061: Call to a possibly undefined method zValue through a reference with static type core:tempBase.In as2, this would have been perfectly acceptable (even without the override function), and was incredibly useful in creating my class structures.
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Dec 15, 2011
I am trying to override the text setter in the Label component but it behaves weirdly sometime super.text works and sometimes not! and the traces show that there's no error with my code.
here's my code:
import spark.components.Label;
public class LabelXX extends Label
{
private var _initialText:String;
[Code]....
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Sep 26, 2011
I'm overriding a protected function in a subclass.Let's say I have two classes, Apple and Fruit. I have all variables in place, this is just a simplified version.
[Code]...
Example is trivial. The problem is that the type of the getRandom function depends on its own type. One returns an apple, the other returns a fruit.Of course I get errors about override and coercion.
I've tried returning a Fruit instead of an Apple, but then the object is not an apple, therefore it has no Apple-specific properties.The problem is in ducktyping. There's a third class I cannot change, that executes the getRandom() function on each object, and I need the Apples to be something slightly different.
How can I override the getRandom function in Apple, so that it returns apples, rather than fruit?
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Nov 9, 2011
I have a .fla and one.as(DisablingButtons.as).The .fla currently has only one key frame and three movie clips.First movie clip has base class flash.display.MovieClip and class DisablingButtons.as.The other two movie clips have base class DisablingButtons and their own classes (set by flash on export). The movie clips have identical timelines, 20 frames, two motion tweens, and the only action is stop();on frames 1,5,10,15. I get two errors:5000: The class 'DisablingButtons' must subclass 'flash.display.MovieClip'and 4 copies of 1024: Overriding a function that is not marked for override (on frames 1,5,10,15 of movie clip #2)
I am importing flash.display.MovieClip and have public class DisablingButtons extends MovieClip.Code below...[code]..........
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May 1, 2011
Can I access a static variable of a subClass' subClass? I don't want to instantiate it, just looking to get the variable because it has already been initialized by the subClass.example:
package
{
public class A extends MovieClip {
private var classB:B = new B();
[code]....
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Jan 26, 2010
In Flex, you can add functions to the prototype of a Class; but how do you add a setter? For example, with A some (non-dynamic) class, you can do this:
var o:Object = new A();
A.prototype.myFunction = function():void{trace("foo");}
o.foo();
And that will call the foo function. But how could you add a setter, so that setting the property calls the setter (just like it would if you declared the setter in the "normal" way on the A class). So what I want is something like this:
// doesn't work!
A.prototype["set myProperty"] = mySetter;
o.myProperty = "test"; // should call mySetter
PS: Manipulating the prototype is an unusual thing to do in Flex, and not something I'd recommend in general. But for the sake of this question, just assume that there is a reason to dynamically add a setter.
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Jun 3, 2010
I've created an AS class to use as a data model, shown here:
package
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import mx.controls.Alert;
[code].....
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Nov 9, 2009
I'm having trouble updating a property value of a custom class (SubLoader) using a getter and setter. Inside the if() statement of the main fla you can see my attempt to set the percent value. Running a trace() method before the if() statement always outputs '0' for some reason. Tracing after the if() statment outputs an actual value. I can't figure out why the percent property always traces as '0' before the if statement even though I am updating it with each progress event.
[Code]...
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Oct 3, 2011
I'm trying access my Document class (Manager) from within a movieclip in my fla, to set one variable within Manager. Manager is within the folder "code", and just like any class it's simple enough to write "var mng:code.Manager;", except I'm not sure how to define Manager:
"var mng:code.Manager = new Manager();" gives "Error #2136 .swf contains invalid data", for what seems to be the general redundancy of initiating the Document class again from the fla.So, how do I reference the Manager, so that I can simply write "mng.setVar = whatever;"?
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Dec 29, 2009
Anyone know a workaround to make static getter/setters?
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Mar 22, 2012
I seem to have run into a situation where when I push a value to an array held within a singleton via a getter/setter , Flash seem so access the getter over the setter method. Within my command/controller (I am using RobotLegs)
override public function execute():void {
// various line of code here
//Place screenshot image into an array from model for later reference.
model.unitScreenshots.push(screenShot); // screenshot is just a Bitmap object
}
The getter and setter within my model e.g. robot legs singleton
public function get unitScreenshots():Array {
return _unitScreenshots;
} public function set unitScreenshots(value:Array):void {
_unitScreenshots = value;
}
When I set a break point on both the getter and setter, only the getter method is being called, why? I would think that a push value on the array would trigger the setter, not the getter.
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Aug 13, 2010
I have a class which extends the Sprite object in as3. I need to be able to override the transform.matrix setter in this class but haven't been successful in doing so.
I've tried many things, along with creating my own separate class which extends the Transform class and then overrides its set matrix function, and set my transform = new CustomTransform(). Sadly this didn't work.
In code this is what i tried:
public class MyClass extends Sprite
{
public function MyClass()
{
[Code]....
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Oct 11, 2011
I'm trying to create a property that can be set by extending classed and read publicly.I couldn't think of a good naming convention for a protected property with a public getter, so I tried to do this:
public function get name():String{ return _name; }
protected function set name(string:String):void
{[code]......
However I get the error (when trying to set name in an extending class): 1178: Attempted access of inaccessible property name through a
reference with static type testing:TestComponent.1059: Property is read-only.
If I change the setter to public, it works fine.
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Feb 19, 2012
I recently completed a tic-tac-toe game in AS3, using some simple function-based code I had written in C many years ago.Now I'm on a quest to do it the "right way" using OOP techniques and best practices.Everything is now divided into neat little packages, it looks pretty, and the last part of my journey is to get all the little buggers to communicate with each other.I want to move the code which holds the game state from my main to it's own class in com.okaygraphics.model.GameState.The problem is nearly every other package gets and sets these game state properties.I'm trying to figure out the simplest way to encapsulate this stuff, while still allowing my other classes to access it.
1) Do I need a constructor? I mean, my program will never have more than one GameState. If I should call my getters/setters as instance methods, how do I get each other class to reference the SAME instance from their respective packages?
2) Do I even need getters and setters? Perhaps the class could just have 3 public properties? If so, how would I acheive the proper scope with regard to my other classes?
3) Should I assign everything to the class itself using the static keyword? If so, how would I implement and use those static methods?
4) Is this a mistake? Did I totally just program myself into a corner?
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Jun 28, 2009
i dont get the advantages of using getter and setter instead of setting the var public.
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May 26, 2010
I have two functions one that sets and one that gets a number. The set one works, but the get one doesn't. I have it trace the set it returns the correct number, but when I set the getY function, it doesn't give me anything at all. When i took the number out of the trace it just gave me back only text. What am I doing wrong here?
ActionScript Code:
public function setY(y):void {
y = y;
[code].....
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Aug 20, 2010
After doing nothing with AS for quite a while (2007) I started to code a little project in actionscript 3.0. An extensive Java course cleared up a lot on OO programming, but probably gave me some false expectations too.I'm trying to program a game in which a human and computer player compete. The computer player needs to do the same actions as the human one.So for every onClick for the human player has on a screen element, a computer player class needs the same functionality. Now for some reason the clickHandler won't let me call the setter function set selected function (see the lines in red).
Code:
package Classes{
import flash.display.*;
[code]......
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Sep 30, 2010
I want to use setter method for my xml object which is contain Images path. Actually I want to load images in swf using xml so for this purpose I make a xml object using URLloaing class and I want to setter and pass these object to other class ........like ImageLodingClass. My question is how to receive this object in ImageLodingClass IS it is String so how to Convert in Array for storing All path of images?
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Mar 17, 2010
I have a .as file with class Main which contains:
Code:
public function set Set_AnimationFile(FileName:String):void
{
this.FileName=FileName;
[Code]....
How do i access these functions from my timeline script?
I have tried
[Code].....
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Sep 17, 2011
I have a class file called "Character_Gen" that generates a lot of random numbers and stuff and displays them on the stage via text input boxes (for the time being), as well as scaling Movie Clips to provide a visual representation of the data. So far so good...But recently I have been trying to add buttons so that you can increment and decrease values (variables) in the class file and update the stage to reflect these new values visually. I have written a setter function in my class file that requires two parameters (stat and stat1), it should in theory allow me to enter any two variables from the class file and increment them at the press of a button. But it doesn't work, the values never change. However the aggravating thing is that it works fine if I don't use the parameters and write the method with the variables I want. I plan on having a lot of pairs so writing a function for each would really suck.
Code:
//this is in my class file Character_Gen.as
public var bravery:Number;
[code].....
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Oct 23, 2009
I have written a class, which is basically a textfield for forms. It will eventually have several validation modes built into it too, which will be set by setting a property of the object.anyway, my problem. Basically my setters are empty if the movie is used as a loaded swf within another movie.I have an Event listener within the class listening for the Event.ACTIVATE event (still not sure exactly what this does...) though i do know that i need this in place for the setters/getters to work.If i create objects from my class, set some properties everything is spot on, though the moment i load this working movie into another movie the Event.ACTIVATE does not fire.[code]Now, if i run this movie its perfect - everything works as it should, right down to the validation.however, this movie is to be used within another movie. When i load this movie into a parent movie my fields aren't added to the movie.
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Nov 20, 2009
I'm trying to make a class that extends the Sprite, have some private properties attached to it and be able to read and write those properties using getters and setters. Simple... but the compiler throw this error "Access of possibly undefined property speed through a reference with static type flash.display:Sprite."It works if I set my class to extend the MovieClip object.Could someone explain me the logic behind this? why I can't use getter and setters with a Sprite?Here is a sample code:
package {
import flash.display.Sprite;
public class Vehicle extends Sprite{
[code].....
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Sep 21, 2010
I can see that when I set htmlText in a textarea control, the text property contains the html free version of the text. So there is a parser somewhere that is ripping of html from the content, which would be very usefull for my purposes.
However, based on the flex source code, the setting of html is done in UITextField.as, which is the type of the textfield member of TextArea. The line that does the work is:
super.htmlText = value;
in function override public function set htmlText(value:String):void Trying to follow the class hieararchy, I end up in FlexTextField class, which extends flash player's textfield class. It appears the functionality I am after is in flash player. So is there any way of accessing this html cleaning function?
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Aug 2, 2011
I'm trying to make a class that extends the Sprite, have some private properties attached to it and be able to read and write those properties using getters and setters. Simple... but the compiler throw this error "Access of possibly undefined property speed through a reference with static type flash.display:Sprite."It works if I set my class to extend the MovieClip object. someone explain me the logic behind this? why I can't use getter and setters with a Sprite?
[Code]...
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Sep 9, 2011
Is it possible to have a property with a public getter and protected setter? I have the following code:
public class Mob extends Sprite {
// snip
private var _health:Number; // tried making this protected, didn't work
public function get health():Number { return _health; }
protected function set health(value:Number):void {
[Code]...
I did have this.health -= dmg; but I split it out to get more details on the compiler errors. I don't understand how the property would be considered read-only within the same class. I also don't understand how it's inaccessible. If I make the backing field, getter, and setter all protected, it compiles but it's not the result I want; I need health to be readable externally.
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Jan 1, 2012
what I try I can't get the Setter function to work on a vector.<object>
Mean while the getter works fine Example as below
Code:
public function get frameData() :Vector.<Object>
{
trace("getter");[code]....
the code runs fine without the set function, but not without the get.
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Oct 31, 2011
What is function overriding an action script 3.0 can any one explain with an example
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Feb 7, 2012
I have been assigned to work on a Java/Flash/BlazeDS project. When I pull down the project code, I need to run an Ant script as part of the setup. This script eventually compiles the Flash code, as seen below.[code]...
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Jul 27, 2009
Which is a much better practice in binding a value in Flex?
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Jul 4, 2011
This AS3 function works for normal methods and getter methods:
public function MyClassTestAPI(functionName:String, ...rest):* {
var value:*;
try {
[Code]......
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