Actionscript - Flash Application Which Uses Class Method, Or Property?
Sep 6, 2011
For example, if an application uses class, method, or property which is supported only by Flash Player10.When you run the application on Flash Player9, what will happen? Flash Player will be crashed? Or Flash Player will show you a message screen to upgrade your Flash Player? Or the application will normally run and will ignore the part which uses the unsupported class, method, or property? Or the application will cause a runtime error when the unsupported class, method, or property are called?
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May 24, 2011
I'm using code for the open source MP3 player Howler and trying to port it to a Spark MobileApplication type. I'm getting a null pointer exception and I have no idea what's causing it. I've tried debugging extensively with breakpoints at what I think is causing the error, and set breakpoints in the untouched Howler project but all the variables in scope seem to be identical between my non-working project, and the Howler project. The only thing I can think of is that Howler uses MX components and I am using spark. I've pasted all my code below (which is very long) but I've bolded the lines that are throwing the error. The error occurs immediately after I choose a folder in the browse folder dialog.
<?xml version="1.0" encoding="utf-8"?>
<s:View xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" title="Home"
[code].....
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Mar 14, 2012
I want to create an array of strings in a text class that I can access with the main document class. Then I'll be able to populate a text field with items in the array. The purpose of this is to avoid having massive lines of text in my main document... but I can't even get my test to work. The compiler is telling me that the array (txt1) is undefined. First here's my code for the array:
//text array class:format5000
package {
import flash.display.MovieClip;
import flash.text.*;
[Code].....
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Sep 11, 2009
I recently found a method (ByteArray.clear()) that FlexBuilder complains is possibly undefined; however, the method is in fact documented in the Flex LiveDocs. It must have been added in a later version of the SDK than I have installed. I'm not asking about this particular method, but I'm giving it as an example of the documentation issue that I'm trying to resolve. My questions are:
How can I determine what version of the SDK or Flash player that a method or property was added in? How can I tell which versions of the SDK are supported on which Flash player versions?
I want to be able to determine from the documentation, instead of compiler or runtime errors, what SDK and Flash player versions are needed to support newly added methods.
With Java I look for the @since javadoc tag when I need to know this, but I can't find an equivalent feature in the Flex docs.
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Dec 11, 2010
I know that I can get info about constants, methods, etc of a class by using flash.utils.describeType. But I want to know if I can retrieve the asdoc comments of a class member.
I suspect, documentation is removed when classes are compiled into SWF so it might be impossible to get comments during run-time.
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Nov 28, 2009
In Visual Studio, when we write some code, there are code hints, for property,custom method of some class that we create.There are code hints on Flash CS4, but it seems that it didn't show code hints for custom method or property on some class . Is there any way to make Flash CS4 show code hints for custom method, property and namespace that we created ?
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Oct 8, 2009
I'm having some trouble implementing a "virtual" camera for use in game development with Flash CS4 ActionScript 3.0.Basically, what I'm trying to accomplish is to have a camera that moves about the main stage so that my character can traverse the level which is much larger in size than the stage itself.I've been using Sham Bhangal's virtual camera script, and when I implemented it by sticking the code into the first frame of a movie clip, it worked great!
From there, I moved the code into a document class that i could instantiate and then drop onto the stage as a child.Finally, I wanted to have a main "builder" document class that would be added to the main stage as a child, and within THIS class I wanted an instance of the virtual camera. This is where I hit some obstacles.how to properly instantiate the virtual camera within the builder class which is then added to the main stage. I have a Stage reference that is being passed to the main builder, but I don't know where to go from here. To what do I add the virtual camera to as a child? To the Stage reference in the main builder class? To the main builder class itself?The main issue is that when I export my movie with the virtual camera added as a child to the Stage reference within the main builder class, it complains that I'm not allowed to access certain values.
Code: Error: Error #2071: The Stage class does not implement this property or method.
at Error$/throwError()
at flash.display::Stage/set x()
This happens when I try to access parent.x from within the virtual camera class. I assume this fails because "parent" from this perspective is the main builder class, but using the Stage reference produces this same error.I am, of course, willing to provide more detail if something I've written is confusing, and I will gladly provide a detailed fix for those seeking to use a similar solution in the future.
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Jun 1, 2006
I have a simple quesiton about class, method and functions inside a method and class properties. I created a new class form my custom component.. But upon developing it I found out that you can not access a property inside the function which is also inside a method..
Example
Code:
class myClass{
private var myProperty:Number = 1; //default is 1
//constructor
public function myClass(){
}//Method
[Code] .....
What I want to do is to access the property inside the method.. I also have a work-around still i cannot point a certain variable to a property of my class inside the method's function..
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Jun 2, 2010
So I've been trying to move the stage's X and Y position and keep on getting this error:
Code:
Error: Error #2071: The Stage class does not implement this property or method.
at Error$/throwError()
at flash.display::Stage/set y()
at Main/scroll()
I am using a document class, here it is:
Code:
package
{
import flash.display.MovieClip;
import flash.events.Event;
import flash.events.MouseEvent;
[code]....
As for why I'm trying to move the stage, I have a movieclip which moves according to keyboard input and i want the stage/Background to always center on him.
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Oct 13, 2009
Error: Access of undefined method getStatus through reference with a static type Class.
Here's what's happening in the code. I'm trying to create a User class that is instantiated at the start of my app. I want the User class to have properties like mainStatus, with helper methods like setStatus etc. Pretty simple.
so on my HardDisk I have my flash_working folder with all my flash projects. I created my class file/package under the directory com.mypackage
[Code]....
That's all the code I have.
If I try to access the public var mainStatus through user.mainStatus that gives a similar error saying:
Error: Access of undefined property mainStatus through reference with a static type Class.
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Feb 7, 2012
I have a dynamic Class and what I would like to do is call a method everytime a property is appended to the class during run-time.
[Code]....
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Jul 5, 2010
I have a rather silly question but as3's document class always gets me confused.I have a public method on my document class. I want to call this method from another class that is instantiated from within an object in the library of the flash file (the same one on whose document class I want to call a method).
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Sep 22, 2010
Creating a pacman-like game, where a player eats objects. When a MovieClip (box) eats a circle on the stage, the score in the dynamic text field should go up by 10 points.
Error message:
Cannot access a property or method of a null object reference.
at Move/init()
at Move()
[Code]....
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Jul 23, 2011
I just keep getting this error (I don't know how can adobe give us errors that don't point to anything).
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at loader::AddPhoto()
at AddPhoto()
at flash.display::Sprite/constructChildren()
at flash.display::Sprite()
at flash.display::MovieClip()
[Code] .....
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Sep 19, 2011
Here is my entire debugged error:
Car initiated: [object MovieClip]
Wheel initiated: [object MovieClip]
TypeError: Error #1009: Cannot access a property or method of a null object reference.
[code].....
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Feb 9, 2011
I've got a problem with a flash application I'm creating. I have put an FLV movie in frame 10 of a scene, but whenever I test the movie it just says[code]...
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Jan 29, 2012
If I have three classes:
public class Example {
public function Example () {
}[code]............
You can see that the two last classes extend the first one, and both have the 'variable' property. In case that I have an instance of Example and I am sure it is also an ExtendedExample OR AnotherExtendedExample instance, is there some way to access the 'variable' property? Something like
function functionThatReceivesAnExtendedExample (ex:Example):void {
if(some condition that I may need) {
ex.func()
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Jan 3, 2011
Is it possible to add my own custom property to the flash.display.Bitmap using a public static method? I'm trying to write a bitmap utility that does something to a bitmap, and stores a Number property onto it afterwards.
[Code]....
I'm still learning AS3.0 OOP, I think that this can't be done with this method. I think I have to make a new Class that extends 'Bitmap', add the prop there, and then in the Main.as make a new instance of that class, point to the target Bitmap, and run the method in the extended 'Bitmap' class (?).
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Jun 19, 2011
class a make a number , and pass to class b.but when define class a in class B , flash throw TypeError: Error #1009: Cannot access a property or method of a null object reference.it's papular error in flash.i have 2 function in class a ,Class A:
public function ClassAConstractor():void{
stage.addEventListener(MouseEvent.MOUSE_DOWN , OnMouseDown );
stage.addEventListener(MouseEvent.MOUSE_UP , OnMouseUp);
[code]....
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Feb 21, 2011
I am supposed to be doing a project for an animation class of mine. Our professor wants the following- He wants us to create an animated movie clip on the main time-line. Then on a separate layer we can have 2 buttons with some code. One button will stop the animation from playing and the other will get it to play. I have created my animation on one layer and buttons on another layer. Then I have a 3rd layer named actions for my action script. I made sure to give instance names to all my objects. My problem is I go to test movie and I get the following errors for each button I press.
[Code]...
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Aug 12, 2010
I've got on main timeline (on frame 10) buttons, when I click one of them it goes to its currentLabel"". On curerntLabel at frame20 "racerButton" where I've got some tweening. At currentLabel "boardButton" at frame30 I load external swf. The problem I've got is when I press any button everything works fine. But when I first press button "boardButton" at frame30 the ext.swf shows up fine, but when next I click the button "racerButton" at frame20 the tweening doesn't work there and it gives me error
[Code]....
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Dec 28, 2010
So I have this target movieclip and some dragable square movieclips that are created every 5 seconds, and I'm trying to removechild them when they touch the target but as soon as they appear on stage I get this evil error, and when I drag them onto the target nothing happens
TypeError: Error #1009: Cannot access a property or method of a null object reference. at Function/<anonymous>()I've googled over 9000 times trying to figure out what's causing it but everything i try doesn't work! Or it just gives me another error in place of it.
[Code]...
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Jan 25, 2011
I have a drag drop routine, with the dropTarget consisting of a sprite with a label containing text on it. The problem is that depending on the mouse cursor position on the item being dragged, the drop registers either with the intended target Sprite, or with the textField of the Label on the Sprite.Is there a neat way of finding out what class the drop target is? My attempt gives me the following error.
"Cannot access a property or method of a null object reference"
private function mouseUpStopDrag(e:MouseEvent):void
{
[code].....
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Mar 13, 2012
I've been stuck with such an error for 2 days now, and however I search on solving this from the number of previous questions asked about this error, I still can't seem to get it to work, mainly because I don't understand it at all.Every time I enter the door with a hittest to the next scene, the error goes: TypeError: Error #1009: Cannot access a property or method of a null object reference.at gallerycopy_fla::MainTimeline/collision()The code's pretty long so I'm just gonna put the FLA (CS5) file
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Apr 6, 2012
TypeError: Error #1009: Cannot access a property or method of a null object reference. at src::Game/onClick() This is the full error^, however it doesn't give me the error on the timeline, but the output, when the flash game is played. Here's the code:[URL], the error's in line 35 or 49.
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Apr 24, 2010
Working on a project and get this error on the Output Log TypeError: Error #1009: Cannot access a property or method of a null object reference. at FlashSite_fla::MainTimeline/frame16() Here's every frame that is on, begins, or crosses frame 16
[Code]...
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Jan 11, 2011
its giving me that error after I click a button to go to another frame. After I get the error, some buttons do not go to its destination and instead it just does nothing.The error is as follows:TypeError: Error #1009: Cannot access a property or method of a null object reference.at wmhssports_fla::MainTimeline/frame39()Here is the code for frame 39:
stop();
winter_btn.addEventListener(MouseEvent.CLICK, buttonClick1);
function buttonClick1(event:MouseEvent):void{
[code].....
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Mar 16, 2012
This error pops up: Error #1009: Cannot access a property or method of a null object reference. at test9_fla::MainTimeline/PlayerMovement()
[Code]....
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Jul 21, 2010
am trying to load another b.swf into this a.swfif i try to load a swf without class it works fine.a.swf have no class, but b.swf have.I encounter this error.TypeError: Error #1009: Cannot access a property or method of a null object reference.at MyGame()What is the solution?a.fla
Code:
stop();
function startLoad()
[code].....
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Mar 9, 2011
The problem i am having is that when I create a dropdown menu navigation bar i try to use the code to allow the pages to continue to flip depending on the menu item selected just as it currently does in the contents part of the page. This is the error i receive Error #1009: Cannot access a property or method of a null object reference. The code is inside of the movie clip of the dropdown button animation. Here is the code i am working with
[Code]...
I would assume the switch(e.currentTarget) is the cause for this code but i do not know what to replace that line with in order to point the event to activate on the scene of the .swf If i place a button on the main scene of the .swf then attach this code it all works fine. If you guys would like the .fla and the code from the .api ill be happy to post it.
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