ActionScript 3.0 :: Set A Default Value For A Class Parameter Of Type Class?
Feb 2, 2010
I'm working on an accordion component and I was thinking that it'd be cool if I could write a very basic one and then set it up so that it would be possible to pass in any kind of container class and child class so long as they subclassed a particular parent or implemented an interface (haven't really gotten that far yet).
What I've noticed though is that I can't setup a default class for my constructor parameter. For example I'd like to do this:
Code:
public function DropDownList(containerClass:Class = ContainerSprite, childClass:Class = ChildSprite)
However it gives me the following error:
1047: Parameter initializer unknown or is not a compile-time constant.
[Code]....
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Jun 30, 2009
Is it possible to set up a Class to have a Default Parameter as a new function? An example of Default Parameters:
Code:
function sayHello(somebody:String = world):void {
trace(hello, +somebody);
}
If so, what is the syntax for it?
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Jun 16, 2011
I have a custom class being constructed from my main class. In the custom class it has another custom class that is passed in as a parameter. I would like to strictly type the parameter variable but when I do, 'the type is not a compile type constant etc'.This, I understand, is because the custom class used as a parameter has not yet been constructed.It all works when I use the variable type ( * ) to type the parameter.I suspect this is a design flaw, in that I am using an incorrect design pattern.It is actually hand-me-down code, having received a large project from someone else who is not entirely familiar with oop concepts and design patterns.
I have considered using a dummy constructor for the parametered class in my main class but the passed in class also takes a custom class (itself with a parametered constructor). I am considering using ... (rest) so that the custom classes' parameters are optional.Is there any other way to control the order of construction of classes? Would the rest variables work?edit)in main.as within the constructor or another function
var parameter1:customclass2;
customclass1(parameter1);
in customclass1 constructor:
[code].....
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Oct 6, 2010
I'm trying to do this,
Code:
Main.instance.subClassFunction();
instance is a public static variable on the default class, Main. I can do Main.instance.defaultClassFunction() with no problems at all, I use it to access functions and variables from within other classes. Is it possible to use this method to call a function on the subclass, currently I have to do this,
[Code]...
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Oct 14, 2010
I created an flv video player using Flash Builder 4. This "BasicVideoPlayer" project is compiled into a SWC that will be eventually be used to create other video players that extend the functionality. One of the features is a view that appears when the video has finished playing that displays a "Play Again" button. This "Play Again" view has its own class, "BasicPlayAgain", that accepts a graphic asset that is exported from a .fla file that contains all of the graphic/UI assets.
In my new project, "EnhancedVideoPlayer", I'm using the BasicVideoPlayer SWC as a library to create a new video player that will add more functionality to the "Play Again" view; specifically it will add more buttons to that view.The EnhancedVideoPlayer uses a default class that extends the BasicVideoPlayer class. The BasicVideoPlayer class has a member called "playAgainScreen" whose type is BasicPlayAgain. The EnhancedVideoPlayer needs to override the playAgain member and recast it as EnhancedPlayAgain so it can control the new buttons properly.
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Feb 19, 2010
I realize this is kind of an odd issue, but I am wondering if there's any way to get Flash to allow me to access a class's static functions using a class variable that points to the class. Example:I create a class called FooClass that has a static function named fooI then create a variable of type Class that points to it
Code:
var class:Class = Class(getDefinitionByName("FooClass"));
However, when I try to call foo() using the variable, it errors saying the function
[code].....
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Sep 27, 2011
I constantly get:Implicit coercion of a value of type Class to an unrelated type lash.display.BitmapData.var ba:ByteArray = jpg.encode(BitmapData);This is my code from where it tells me it's wrong"
ActionScript Code:
var jpg:JPEGEncoder = new JPEGEncoder();
var ba:ByteArray = jpg.encode(BitmapData);
[code].....
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May 4, 2009
Basically plots a dot wherever you click. Getting the error 1067: Implicit coercion of a value of type Class to an unrelated type Function.
package { import flash.display.MovieClip; import flash.events.MouseEvent;
public class particle extends MovieClip { //private var _xmouse:Number; //private var _ymouse:Number; private var mc1:MovieClip = new MovieClip(); private var mc2:MovieClip = new MovieClip(); private var mc3:MovieClip = new[code].....
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Aug 15, 2011
These are my errors: in Adobe Flash CS5.5
I don't understand why this script doesn't work. I am new to Action Script 3.0 and I watched this incomplete video on youtube. -- [URL] and I got the fails below.
[Code].....
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Apr 5, 2012
So for instance, I've got three .as files called 'Helicopter.as, Game.as, Blue.as'
and I also have a .fla file called Helicopter.fla (These files are all suppose to link together, to make the helicopter game) . In the Game.as file, I have the following;
[Code]....
Flash doesn't recognise the original Helicopter symbol (in the Helicopter.fla file, because I deleted it). But I want the system to detect the 'circle' drawn using API (In the Helicopter.as file). And I have no idea how to how to name the API drawn circle 'Helicopter', thus I'm getting an error. So how do I name the API circle to 'Helicopter', so the Game.as file recognises it.
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Sep 10, 2009
I wanna pass a class name as a function parameter.In that function I wanna make instances of that class, any1 know how?
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Dec 16, 2011
I have seen this code in ultitouch gesture samples. But I don't kno how can I pass a bitmap parameter to the statement [Embed(source="imagenes/prueba.jpg")], how can I use this code with other bitmaps using parameters in this class?
package
{
import flash.display.Bitmap;
import flash.display.Sprite;
[Code]....
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Sep 20, 2009
i have a button class that i use like:
btn1 = new ButtonClass("Label");
i want to extend ButtonClass.but this is giving me an error.
public class EnterButtonClass extend ButtonClass
how can i pass the param?
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Oct 23, 2010
Let say I have two type object, one is MovieClip and other is Sprite, then I'm creating a function to access its child.
ActionScript Code:
function accessChild(parentObj:Object, childObj:Object):void {
trace(parentObj.childObj);
}
Then using "Analyze Project Source Code..." from FlashDevelop tools to analyze my code, I've got an error message:
"Do not use Object class. It is a bad practice to use the dynamic class Object. Prefer using strongly typed object, or marker interface in order to avoid silent compilation errors while refactoring". What type of object should I use in the parameter if I don't know the type of object if using an Object class as type object is a bad practice?
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Apr 16, 2011
quick question:Is there a better way to do this?
public class ribbon extends Sprite {
private var fallAmount,taper;
public function ribbon(FallAmount=50,Taper=0.2){
fallAmount=FallAmount;
taper=Taper;
}
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Jun 30, 2011
When I export assests for actionscript the defaul package is empty it there change to change it? To each time I export library asset for actionscritp default value for class field will contain package?
ex.
Class: assets.MyClass
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May 31, 2010
I have an application that gets its variable data in XML file.
This application is used for different clients with different data.
Some of the data I pass to the Document class from the first frame. I would prefer to pass url to the XML file the same way, without the necessity to update the document class. But now I have to hardcode this url in the class every time, because I cannot get parameters from the first frame to the class at once, only after some time (like after loading XML with hardcoded url).
Is there a way to force executing of the code on the first frame before the code in the class will proceed?
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Apr 15, 2010
im loading a child swf into my parent swf and I want to pass some parameters to the child swf.
Here is my code:
var req:URLRequest = new URLRequest( "test.swf" );
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener( Event.COMPLETE, loadComplete );
loader.load(req);
[Code]....
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Feb 5, 2009
I have written a class that works fine, but as soon as I try make it re-usable and pass a parameter. It gives me this error "1120: Access of undefined property xmlList_0."
Here is ActionScript Code:
package Classes{
import flash.display.*;
import flash.events.*;
import flash.net.*;
public class Carousel extends MovieClip {
[Code] .....
This is the code in my fla.file to run this class:
ActionScript Code:
import Classes.Carousel;
var carousel:Carousel = new Carousel(xmlList_0);
addChild(carousel);
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Sep 10, 2009
I ran into a problem today. Since I wanna pass a class name as a function parameter. In that function I wanna make instances of that class,
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Dec 23, 2010
If I set my variables as type MovieClip instead of the type of the class for the MovieClip I am calling them as, will this affect my presentation in any way? Say I have a movieClip Walls with a class definition Walls. Will
var newwall:MovieClip = new Walls(); or
var newwall = new Walls();
be any different than
var newwall:Walls = new Walls();
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Feb 17, 2011
Is it normal for the document class to be in the default package, or is this just a bad habit I'm in?
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Feb 4, 2010
I'm building a game which makes use of a few extended classes. I've recently made a few changes in the way the graphics are ordered and am now running into problems, namely:
ReferenceError: Error #1069: Property grab not found on flash.display.Sprite and there is no default value.
at DraggableSprite/grabObject()
ReferenceError: Error #1069: Property drop not found on flash.display.Sprite and there is no default value.
at DraggableSprite/dropObject()
The general structure is as follows ('>' means extends) :
MovieClip > DraggableSprite > PlantPart > Seed or Flower.
DraggableSprite manages dragging/dropping objects with the mouse. It contains the offending lines of code being:
Code:
private function grabObject(evt:MouseEvent) {
trace("grabTarget: "+evt.target.name);
if (this._draggable) {
_origX = evt.target.x;
_origY = evt.target.y;
[Cde] .....
The Seed and Flower classes contain a public 'grab' and 'drop' function which manage some different effects of being picked up and dropped, but the code seems to stop short at the PlantPart class and register a sprite it contains as the 'evt.target'. I added this intermediate sprite to overcome a colission problem with the mouse. The sprite functions as a dragbox, while the Seed and Flower graphics offer visual feedback.
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I am calling java servlets from flash using the following code [below is a sample Flash code for calling a java servlet in Flash which I am using]:
String url_String="[URL]"; var req:URLRequest = new URLRequest(url_String);
In this case, the servlet is called/working fine only in my system where the flash application is deployed & not working when I execute the application in different system using the "IPAddress" of my system. So, What changes I need to make in above Flash code in order to call the same servlet successfully from my system and as well as from other systems? (OR)
Is there any need to pass the servlet-url's relative instead of absolute? If so, How can we pass relative-path of url's in Flash? && Can anyone explain me with an example? How to change my above code to pass the url 'relative' rather than 'absolute'? If I pass the url relatively, does my issue gets resolved?
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Dec 28, 2010
I am creating a class to handle some audio in an app I am building. This class will need to accept the XML element path as a passed parameter and or a getter.
examples of some XML elements I would like to pass to the the audio handler class to access them.
Dialog.introScreen.text
or
Dialog.secondScreen.main.text
ect.
I pretty sure this is not a string data type and thus cannot be passed as a string (I could be wrong though), if not, what data type would I pass it as?
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Nov 7, 2004
I have a class that has a constructor which accepts some parameters.
Code:
class MyClass {
var myNumber:Number;
function MyClass(number) {
myNumber = number;
}}
Is there a way I can link this to a movieclip and pass the parameter? From what I've found there are two ways to link the class to a movieclip, one using the registerClass and another typing the name intro the Linkage Box in the Library. But in both cases there are no parameters being setup.
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Jun 16, 2011
In class Main I am instantiating a custom class NavLabel that creates a textField. With in NavLabel I dispatch a custom event CustomEventWithParams on a reference to class Main that passes the parameter theLabelWidth along with it. from with in class Main i can trace the theLabelWidth for each of the instantiated NavLabel objects. I want to hold those values in an array labelWidthArray and then use them to position the NavLabel objects. how can I do this?
class Main
Code:
package
{
import flash.display.*;
import flash.events.*;
[Code]....
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Jul 26, 2009
When creating an Actionscript Project in Flex builder 3 an application class is automatically created and dropped in the root of your source folder. In my case my source folder is called src/.Is it possible to change the default application class to a class which is not directly in the root of the src folder? It seems when right-clicking on class files which are in sub packages the 'Set as Default Application' option is not selectable.Is this done on purpose by Adobe to enforce all pure AS projects to have their application class residing in the top-most package?
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Oct 11, 2011
For example the spark ComboBox.Where is the default skin?Is it generated (at compile or runtime)?If it was in fact written by someone how does the compiler/Virtual Machine know where to find the skin class? I didn't see a location specified in the ComboBox source.
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Aug 9, 2010
I got an error like "Incorrect number of arguments.. Expected 0." when I was trying to make an instance of a user-defined class that I've written in the document class of my project.Here's the line in my document class:private var myNotice:myNoticeClass = new myNoticeClass(this);An untyped parameter is supposed to be the only argument to the constructor method of class myNoticeClass and the constructor is something like this
public function myNoticeClass(ref:*)
{ ......
}
[code].....
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