Category Archives: Error

Flash CS3 / Flex 2 AS3 Error #5000

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ActionScript Error #5000: The class ‘com.cjm.MyObj’ must subclass ‘flash.display.MovieClip’ since it is linked to a library symbol of that type.

Description:
This little error will pop up when you have used the linkage in your library and have not targeted the Class properly.

Fix:
Make sure that in your custom ActionScript Class that you have imported the MovieClip Class properly.

Bad Example:

package com.cjm{
public class MyObj extends MovieClip {

Good Example:

package com.cjm
{
import flash.display.MovieClip
public class MyObj extends MovieClip {

So import those classes properly to fix ActionScript Error #5000 and Happy Flashing

Flash CS3 / Flex 2 AS3 Error #1026

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ActionScript Error #1026: Constructor functions must be instance methods.

Description:
You will get Flash / Flex Error 1026 if you have assigned the constructor of a class to be static. What you most likely wanted to do was create a static method within your class that can be called directly from the class itself rather than from an instance of the class. You are probably trying to create something like the Math.round() method within the Math class. This is a static method and can be called directly from the class.

Fix:
Remove the keyword ‘static’ from the constructor function within your class.

Bad Code:

public class MyStaticMethod
{
public static function MyStaticMethod()
{
public static function theRealStaticMethod (inputString):int

Good Code:

public class MyStaticMethod
{
public function MyStaticMethod()
{
public static function theRealStaticMethod (inputString):int

I hope that you didn’t bang your head against the wall with AS3 Error 1026. It is an simple ActionScript Error to fix with a strange description.

Happy Flashing

Flash CS6 / Flex Error #1009: Cannot access a property or method of a null object reference

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TypeError: Error #1009: Cannot access a property or method of a null object reference

ActionScript 3 Error #1009 is an AS3 that you can get for many anecdotal reasons. This error basically means that you are trying to reference something that isn’t there yet. That something can be a variable, data from the server, or even a movieClip or other display instance. So if you try and make a call to something and are getting this error simply look at what you are trying to reference and ask yourself is it there yet.
Don’t bang your head against the wall any longer. Here I explain one of the most un-obvious ways to get this error.

One reason that you will get AS3 Error #1009 is because you are trying to access a movieClip that isn’t instantiated yet. For example you try and reference a movieClip named loader_mc that is inside another movieClip. you are referencing it from a class that you created. Each time you run the test the movie you get the Run-Time Error #1009. You look inside your movieClip and see that the loader_mc is right where you want it. It is on frame 10 inside your animated moveiClip. That is when it dawns on you that the call to loader_mc happens when it is instantiated. Simply, put loader_mc on frame 1 and change it’s alpha to 0 and then the movieClip will be instantiated when the call from your custom class is made.

Another reason for this error is simply incorrect targeting. If you target parent.bob and the correct reference is parent.parent.bob then you will get this error as well.

Fix 1 :

Make sure the the reference is instantiated before it is called.  This means that the script is run after the object is loaded or the frame in the animation has been reached etc…

Fix 2 :

Check your targeting

Thanks and Happy Flashing

Flash CS3 / Flex 2 / AS3 Error #1176

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Flash CS3 / Flex 2 / AS3 Error #1176: Comparison between a value with static type String and a possibly unrelated type int.

Problem:
Flash won’t compile because it doesn’t like to compare an int with a String.

Fix:
Thank heavens for Strict Typing. Without it we wouldn’t get such nice errors. Just change the type from an “int” to a String and you will be on your way.  If you need it to really be an int then you can cast the second variable to be an int rather than a String. See code example below

Bad Code:

var dropNum:int;function bob():void
{
var myText:String = “2”;
var curNum:String = “3”;
dropNum = myText.substr(0,1);
if (curNum == dropNum) {
someCode();
}
}

Good Code:

var dropNum:String;

function bob():void
{
var myText:String = “2”;
var curNum:String = “3”;
dropNum = myText.substr(0,1);
if (curNum == dropNum) {
someCode();
}
}

or

var dropNum:int;

function bob():void
{
var myText:String = “2”;
var curNum:int = 3;

dropNum = Number(myText.substr(0,1));
if (curNum == dropNum) {
someCode();
}

Hope this helps solve ActionScript Error 1176 and Happy Flashing

Curtis J. Morley