TypeError: Error #1009: Help me?

[qdjch]

When I new instance of classm, error under

TypeError: Error #1009: TypeError: Error # 1009: can not access a null object reference property or method.
at course/course1()

//instance class

var myCourse:course = new course();
myCourse.course1("Chapter01-1/Session01/config/Config.xml");

//class

package
{
import fl.transitions.*;
import fl.transitions.easing.*;
import fl.video.*;
import flash.events.*;
import flash.display.*;
import flash.net.*;
import flash.text.*;
public class course extends MovieClip
{
  private var xmlPath:String ;
  public var loader:URLLoader;
  public var loadppt:Loader;
  public var urlppt:URLRequest;
  public var xmlData:XML;
  public var tween:Tween;
  public var display:MovieClip;
  public var playpausebtn:MovieClip;
  public var mutebtn:MovieClip;
  public var volbar:MovieClip;
  public var seekbar:MovieClip;
  public var ttime:TextField;
public function course1(val:String):void
  {
   xmlPath=val ;
   loader.addEventListener (Event.COMPLETE, onDataHandler);
   loader.load (new URLRequest(xmlPath));

   display.playPauseButton = playpausebtn;
   display.muteButton = mutebtn;
   display.volumeBar = volbar;
   display.seekBar = seekbar;
   display.skin = "MinimaUnderPlayBackSeekCounterVolMuteFull.swf";
   display.autoPlay = false;

   display.addEventListener (VideoEvent.READY, videoReadyHandler);
   display.addEventListener (VideoEvent.SCRUB_FINISH,videoUpdate);
   display.addEventListener (VideoEvent.PLAYHEAD_UPDATE ,videotime);
   display.addEventListener (MetadataEvent.CUE_POINT, cuePointHandler);

  }
  private function onDataHandler ( evt:Event ):void
  {
   xmlData = new XML(loader.data);
   display.source = String(xmlData.video);
...............

..............

.........

[The_Feldkircher]

Hi

This can be a nightmare -  Error #1009 basically means your trying to use something before it exists.

Your constructor - public function course1(val:String):void expects a value sent to it.

Your instantiation doesn't send one - myCourse:course = new course();

Secondly - I don't see a public method to set myCourse.course1("Chapter01-1/Session01/config/Config.xml");

Either send - myCourse:course = new course("Chapter01-1/Session01/config/Config.xml")

or

Remove the value from the call - public function course1():void

and make a public setter method

public function set course(value:String):void

{

  _course = value;

}

Hope it helps

[qdjch]

Thank

but now I don't know how to do...

Now ,I modified code

would you tell me detailed

//new instance of class

var myCourse:course = new course();
myCourse.newcourse("Chapter01-1/Session01/config/Config.xml");/* post a value"Chapter01-1/Session01/config/Config.xml"  to  parameter xmlPath through function newcourse*/

//class

package
{
import fl.transitions.*;
import fl.transitions.easing.*;
import fl.video.*;
import flash.events.*;
import flash.display.*;
import flash.net.*;
import flash.text.*;
  public class course extends MovieClip
{
  public var xmlPath;
  public var loader:URLLoader;
  public var loadppt:Loader;
  public var urlppt:URLRequest;
  public var xmlData:XML;
  public var tween:Tween;
  public var display:MovieClip;
  public var playpausebtn:MovieClip;
  public var mutebtn:MovieClip;
  public var volbar:MovieClip;
  public var seekbar:MovieClip;
  public var ttime:TextField;
  public function newcourse(val:String):void

  {

   xmlPath=val;
   loader.addEventListener (Event.COMPLETE, onDataHandler);
   loader.load (new URLRequest(xmlPath));

    display.addEventListener (VideoEvent.READY, videoReadyHandler);
   display.addEventListener (VideoEvent.SCRUB_FINISH,videoUpdate);
   display.addEventListener (VideoEvent.PLAYHEAD_UPDATE ,videotime);
   display.addEventListener (MetadataEvent.CUE_POINT, cuePointHandler);

  }

...........

...........

...........
 

[The_Feldkircher]

Hi

OK - now your getting confused between a Class Constructor and a Class Public Method.

A Class MUST be defined with the same name in the Public Class definition and the Constructor: for instance

package

{

imports.............

public class course extends MovieClip

{

private var _newCourse:String;

.................

{

public function course():void

{

// initiate vars and listeners for example here

}

// This allows you to externally set the course path.

public function set newCourse(value:string):void

{

_newCourse = value;

_xmlPath = _newCourse;

...........

}

In your document class or on a Frame enter -

var myCourse = new course()

myCourse.newCourse(pathtoxml);

addChild(myCourse);

[qdjch]

Yes,thanks

I try to do with your way,also error

1046: can not find the type, or it is not a compile-time constant: string

package
{
import fl.transitions.*;
import fl.transitions.easing.*;
import fl.video.*;
import flash.events.*;
import flash.display.*;
import flash.net.*;
import flash.text.*;
  public class course extends MovieClip
{
  private var xmlPath:String;

  private var loader:URLLoader;
  private var loadppt:Loader;
  private var urlppt:URLRequest;
  private var xmlData:XML;
  private var tween:Tween;
  private var display:MovieClip;
  private var playpausebtn:MovieClip;
  private var mutebtn:MovieClip;
  private var volbar:MovieClip;
  private var seekbar:MovieClip;
  private var ttime:TextField;
  private var _newCourse:String;
  public function course():void

{
   display.playPauseButton = playpausebtn;
   display.muteButton = mutebtn;
   display.volumeBar = volbar;
   display.seekBar = seekbar;
   display.autoPlay = false;
   loader.addEventListener (Event.COMPLETE, onDataHandler);
   display.addEventListener (VideoEvent.READY, videoReadyHandler);
   display.addEventListener (VideoEvent.SCRUB_FINISH,videoUpdate);
   display.addEventListener (VideoEvent.PLAYHEAD_UPDATE ,videotime);
   display.addEventListener (MetadataEvent.CUE_POINT, cuePointHandler);

}

 
public function set  newCourse(value:string):void     //here error:1046: can not find the type, or it is not a compile-time constant: string

  {

   _newCourse = value;
   xmlPath = _newCourse;
   loader.load (new URLRequest(xmlPath));

  }
  private function onDataHandler ( evt:Event ):void
  {
   xmlData = new XML(loader.data);
   display.source = String(xmlData.video);
   trace (display.source);
   var i:uint = 0;
   for each (var cuepoint in xmlData.cuepoints.cuepoint)
   {
    display.addASCuePoint (Number(cuepoint.time), String(i));

    if( btn ){
     btn.index = i;
........................

.................

........

[qdjch]

sorry

string-String

also error

[qdjch]

OK

I had soluted this question

thank everyone