Re: [Flashcoders] passing an array as a method = TypeError: Error #1009: Cannot access a property or method of a null object reference.

[Rodrigo Augusto Guerra]

thanks for your reply cor,  you are correct, p1 is a parameter for the 
constructor (as string) and for the method (as array).

Still, if i change the datatype of data to string the error persists
 public function setGabarito(p1:Array) {

  var tamanho = p1.length - 1 // o indice comeca com zero entao tem 1 
elemento a menos.
  var data:String;

  //copia os membros do array
  for (var r = 0; r <= tamanho; r++ ) {

       data = p1[r];
       //data = "hello";

       aRespGabarito[r] = data;  <-any of the declarations above for data 
results in an error.

   }

 }


----- Original Message ----- 
From: "Cor" <c...@chello.nl>
To: "'Rodrigo Augusto Guerra'" <rodr...@alumni.org.br>; "'Flash Coders 
List'" <flashcoders@chattyfig.figleaf.com>
Sent: Thursday, July 01, 2010 10:42 AM
Subject: RE: [Flashcoders] passing an array as a method = TypeError: Error 
#1009: Cannot access a property or method of a null object reference.


Data is an Array and p is a String

-----Original Message-----
From: flashcoders-boun...@chattyfig.figleaf.com
[mailto:flashcoders-boun...@chattyfig.figleaf.com] On Behalf Of Rodrigo
Augusto Guerra
Sent: donderdag 1 juli 2010 15:36
To: Flash Coders List
Subject: [Flashcoders] passing an array as a method = TypeError: Error
#1009: Cannot access a property or method of a null object reference.

Hi all,

I'm creating a simple class that has an method that will receive an array 
as
a parameter and store it inside the class in a property. This gives me the
error below and I'm stuck. Also I would like to know why if I change the
code inside the method setGabarito to just ( aRespGabarito = p1 )  it
works...


TypeError: Error #1009: Cannot access a property or method of a null 
object
reference.
at trueFalse/setGabarito()
at tf_teste_fla::MainTimeline/frame1()


this is the class:

package {

import flash.display.Sprite;

public class trueFalse extends Sprite{

 //propriedades
 var nome:String;
 var aRespGabarito:Array; //tera o gabarito do exercicio

 //construtor
 public function trueFalse(p1:String) {
  nome = p1;
 }


 public function setGabarito(p1:Array) {

      var tamanho = p1.length - 1 // o indice comeca com zero entao tem 1
elemento a menos.

      for (var r = 0; r <= tamanho; r++ ) {
           var data:Array = p1[r];
           aRespGabarito[0] = data;   <<-- ERROR HERE
           trace(aRespGabarito[0]);
      }

 }

}

}



and this is the code inside the test movie:

var usuario:trueFalse = new trueFalse("aa");
var arrQuestao:Array = new Array();

arrQuestao[0] = ["btV1","btX1","btV1",0];
arrQuestao[1] = ["btV2","btX2","btX2",0];
arrQuestao[2] = ["btV3","btX3","btX3",0];

usuario.setGabarito(arrQuestao);


thanks for any help,
rodrigo.
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