ActionScript 3.0 :: Call A Class Constructor Dynamically Using Factories?
Jan 20, 2011
I'm attempting to call a Class constructor dynamically using factories:
ActionScript Code:
public function construct(classRef:Class, initArgs:Array):* {
var factory:ClassFactory = new ClassFactory(classRef);
var classInstance:* = factory.newInstance();
return classInstance;
}
This works just fine, except when the constructor of the classRef being passed in requires arguments, as in the sample class below:
ActionScript Code:
public class Foo
{
public function Foo(arg:String) {
[code]....
Is there any way I can call construct(Foo, "Hello World") and have it properly pass the parameters to Foo's constructor? (I'm not locked in ClassFactory, by the way, I also tried classRef.apply(initArgs) and a few other hacks to no avail.)
For Example: package{ public class A { var test:String; public function A() }} class B{ } The code is in the same file, we call B is inner class, then how to call the constructor of class B
In the AS3 there is a remark, that a Class Constructor is just a method of the class, that is executed when an object of that class is created. So, since the constructor is just a method of a class, how can I call it directly from the other class methods?
This is my first post. I'm new to actionscript, but not to programming. I hope to learn a lot from these forums. To the point: I decided a few days ago that I wanted to create a flash game. I'm taking an object-oriented approach to the game design since that is what I know. The issue I am having is that I have a class called Hero that inherits from a class called Entity. Now my issue is that I don't want Hero to call the Entities class constructor when I initialize a new Entity.
I've got a simple program that consist of a document class and a buttonTemplate constructor class. I need to call a function called updateText that should be in the document class, when someone clicks on a button. My event listeners for the buttons are in the buttonTemplate class. My question is, how do you call a function in the document class from a constructor class? Here is my simplified code below
I always don't call super() when I extends Sprite.But doesn't not calling super() cause any problem?Till now, I don't have any problem and I have never seen code which call super() in constructor which class extends Sprite. How about TextField? I don't have any problem about TextField, too. How to know whether I should call super() or not?
I have a class. I can call the constructor (initialize the class), and the constructor can then call a function/method inside it's own class (so I know it works), but when I try to call the same function/method myself from the instance of the class I just initialized, I get an error.
I'm dynamically adding to the stage a series of mc from a MovieClip class contained in the library(instance.name: "btn_1", btn_2", etc..) and trying to call them from a method within my Main.as class. What's the best way to do this. I can't seem to reach these dynamically created MCs.
I am creating a Weapon class for a game and the weapons itself will be the sub classes. The sub classes will hard code some values (such as max ammo and the weapon name).
I trying to access this declared data in the base class constructor, at the moment it's not outputting the values. Is this possible?
My current workaround is creating a protected method in the base class to trace the information and calling that method in the sub class's constructor, this works fine but this doesn't seem like the most efficient technique?
I'm having a problem using superclass constructor with arguments. I've searched all over for the solution and found some really useful advice. Problem is i;ve followed it and it doesn't work... not for me anyway. So i've learned that you need to callthe super constructor in the subclass' constructor to avoid this error. problem is, this code still gets the same error....
I just posted a message asking how to call a method from the constructor which has the parameters e: Event. I mistakenly ticked that post as answered when in reality it isnt. I was told I could add = null in the parameter of the function to make it work, like this:
I am trying to things efficiently and put as little code as possible on the timeline.
I have a document class loading and working at runtime.
It creates a button that takes me to a different frame on the timeline.
I have a movie clip there. I put a trace in the constructor of the class of that movie clip but it will not show the trace comment in the output window-its not working. There are no errors.
I also tried instantiating the same movie clip from the document class-which worked-but the trace in it's class's constructor still does not output.
I'm making a class called 'player', and really, I don't need a constructor function for it. Do you just outline the function, but don't put anything between the curly braces? Also, I'm a bit new with access levels. If I wanted my functions from my player class to be accessible from the main class, do I make them public?
I'm doing something - probably very stupid - with an external library swf. That swf so far contains two buttons each with their own classes 'Simple_Button' and 'Simple_Pop_Button'. In the library swf document class I set up an object that lists the available classes:
i have some pretty simple code, i have my document class trying to add a santa class to the stage (simple game ) - but it will not add and i get not errors at all,Santa class:
I have a custom class, MyMC. The only argument the constructor takes is a string, which sets the text of a label inside MyMC.
In the Flash IDE I've placed an instance of MyMC, which is called mcOnStage, on the stage. Through the document's class Main I'd want to perform the constructor function of mcOnStage.
I fell on an unexpected comportment with AS3 class definitions this morning. To tell it quickly, I cannot create an instance of a class inside the same class methods.
Here is an exemple :
package { import flash.display.MovieClip; import flash.events.Event; public class Test extends MovieClip {
[code]....
I would like to understand the sub-process that prevents to do that.
I have a document class name elevator and my constructor is also elevator as usualHow to call this constructor function within elevator class? Is is possible or not?
constructor function in a Class file. I've built several over my day and never heard a 'proper' answer about them. If your constructor function does nothing, not even set vars or listeners
ActionScript Code: public function MyClass():void{ }
is it proper to keep it in the Class file or is it ok to leave it out completely?Or is this just something of preference? What do you guys think/do?
