Question

I wrote a class which contains a few variabes:

public class myButton extends Sprite{
    private var button:Sprite = new Sprite();
    public var Colors:Array;
    public var gType:String = GradientType.LINEAR;
    public var mRotate:Number = 0;
    ...
}

I want to edit this variables in main file like that:

var btn:myButton = new myButton();
btn.Colors = [0xFFFFFF, 0xFFFF00];
btn.mRotate = Math.PI/2;

The sciript is running but it doesnt see the changing of these variables. I think that its a easy problem but I cant solve it.

Answer 1

What you want are setter and getter functions inside your class:
http://en.wikipedia.org/wiki/Mutator_method#Actionscript_3.0_example

Then, in every setter you need to actually do something when the variable changes.

Try this

public class myButton extends Sprite{
    //....
    //note the change to private, common practice is to use lowercase first names in vars 
    //and include _ in front of private vars 
    private var _colors:Array;
    private var _mRotate:Number = 0;
    //...

    //getter and setter for _colors
    public function set colors(value:Array):void{
          _colors = value;
          var ct:ColorTransform = this.transform.colorTransform;
          ct.color = _colors[0]; //for simplicity I use only 1 color
          this.transform.colorTransform = ct;
    }

    public function get colors():Array{
         return _colors;
    }

    //do the same for mRotate but use the Number type

}

This will allow you to do

 var btn:MyBtn = new MyBtn();
 btn.colors = [...];