Error in File Class? - actionscript-3

Question

I have a button at the stage of the name "butdin" And add him as the class : I want to when you press the Menu button in the file show Why button does not work..
package {
import flash.display.MovieClip;
import flash.system.fscommand;
import flash.media.SoundMixer;
import flash.events.Event;
import flash.display.MovieClip;
import flash.display.StageScaleMode;
import fl.display.ProLoader;
import flash.system.fscommand;
import fl.video.FLVPlayback;
import flash.display.StageAlign;
import flash.events.Event;
import flash.events.MouseEvent;
import fl.controls.List;
import flash.display.MovieClip;
import flash.display.DisplayObjectContainer;
import flash.display.SimpleButton;
import flash.display.Graphics;
import flash.display.Shape;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.text.TextField;
import flash.display.SimpleButton;
import flash.events.MouseEvent;
import flash.display.MovieClip;
import fl.controls.Button;
import flash.display.SimpleButton;
public class butdin extends SimpleButton {
butdin.addEventListener(MouseEvent.CLICK, sayit);
public function sayit(e : MouseEvent) : void {
var list : List = new List();
list.setSize(361, 291);
list.move(421, 254);
var i : uint;
for (i = 1; i < 8; i++) {
list.addItem({label:"Track " + i});
}
list.addItem({label:"Track 1"});
list.addItem({label:"Track 2"});
list.addItem({label:"Track 3"});
list.addItem({label:"Track 4"});
list.addItem({label:"Track 5"});
list.addItem({label:"Track 6"});
list.addItem({label:"Track 7"});
addChild(list);
}
list.addEventListener(Event.CHANGE, itemClick);
public function itemClick() {
status_txt.text = "You selected: " + event.target.selectedItem.label;
}
}
}

Answer 1

Try always to do easy, you don't need the butdin class, and you can insert directly your list in the Stage and then create the document class of your project :
package {
import flash.display.MovieClip;
import flash.events.MouseEvent;
import flash.events.Event;
public class Main extends MovieClip {
public function Main() {
butdin.addEventListener(MouseEvent.CLICK, btn_on_Press);
list.addEventListener(Event.CHANGE, list_on_Change);
}
private function btn_on_Press(e:MouseEvent): void {
for (var i:int = 1; i < 8; i++){
list.addItem ({ label: 'Track ' + i });
}
}
private function list_on_Change(e:Event): void {
trace('You selected : ' + e.target.selectedItem.label);
}
}
}
Hope that can help.

Answer 2

The code you shared will not work any way. Because you created the button class wrongly.You are trying to add list and trying accessing the textfield .It's not possible anyway.Instead you could add a document class .
package {
import flash.display.MovieClip;
public class Main extends MovieClip {
var list:List;
public function Main() {
butdin.addEventListener (MouseEvent.CLICK, sayit);
}
private function sayit (e:MouseEvent):void
{
list = new List();
list.setSize (361,291);
list.move (421, 254);
//var i:uint;
//for (i=1; i<8; i++)
//{
//list.addItem ( { label: "Track " + i } );
//}
list.addItem ( { label: "Track 1" } );//Opens swf file 1.swf in next frame on stage
list.addItem ( { label: "Track 2" } );//Opens swf file 2.swf in next frame on stage
list.addItem ( { label: "Track 3" } );
list.addItem ( { label: "Track 4" } );
list.addItem ( { label: "Track 5" } );
list.addItem ( { label: "Track 6" } );
list.addItem ( { label: "Track 7" } );
addChild (list);
list.addEventListener (Event.CHANGE, itemClick);
}
private function itemClick ()
{
status_txt.text = "You selected: " + event.target.selectedItem.label;
}
}
}
Make sure all necessary packages imported and the button and the textfield has the instance name