If I execute the code below in FlashBuilder, I get the following error (I translate it) TypeError: Error #1009: Access to an Attribute or Method of an null-Object is not possible. at components::NumDisplay()[srccomponentsNumDisplay.mxml:39] This line in NumDisplay.mxml is the problem:
[Code]....
Using e4x in flex:
var attr : String = "foo";
var xml : XML =
<resultSet>
<node foo="1"/>
</resultSet>;
How can I use the variable "attr" to access
xml.node.@foo
I thought I could do it with
xml.node.@[attr]
But this doesn't seem to work. How can I access this attribute by a dynamic value like this?
Both
xml.node.@[attr];
and
xml.node.attribute(attr);
work, as Constantiner suggested.
Updates:
Say I have an XMLList in this form:
var bar:XML =
<resultSet>
<node>value</node>
</resultSet>;
I want to filter the original xml above by matching "foo" attributes with the "value" from node in bar.
Essentially I want a sublist of the original xml such that
xml.node.@foo == bar.value
for each xml row in the original value
As Constantiner mentioned, I can filter the original list by the value in foo, but what if I want to filter on multiple values?
Can I do something like:
xml.node.(bar.node.contains(attribute(foo)) ? attribute(foo) : null);
Or perhaps a cleaner method instead of the null?
I have a flex app where I need to be able to access and modify component attributes using variable names.
eg, say I want to edit the text attributes of text label.
I am not sure what object or attribute will need to be updated until runtime.
Say I get passed the following variables:
var objId:String = "label1";
var objAtt:String = "text";
var objVal:String = "Hello World";
I need to take these and update the "text" property of label that has the ID "label1" to "Hello World".
I have tried different variations to accomplish this but am stuck One example is
this[objId][objAtt] = objVal;
i have an xml which contains 'interface' sub tag, iam converting xml to object using SampleXmlDecoder. compiler did not allow me to access the value of the 'inteface' attrible of the resultobject.
[Code]....
its treating interface as keyword. the solution for this.
Suppose I have a list of objects of a certain custom type and I need to find an object given only the value of one of its attributes, how do I do it?
Eg.
// Where user1 ... usern are objects of some class User
users = [ user1, user2, user3 ... usern ]
// How do I find out the objects that have the "foo" attribute set to "bar"
How do you use variables to access Object attributes? Suppose I have an Object declared as follows,
var obj:Object = new Object;
obj.Name = "MyName";
obj.Age = "10";
[code].....
I have a Flex XML object as follows:
private var _xmlCountries:XML =
<Countries>
<option value="AF">Afghanistan</option>
<option value="AL">Albania</option>
<option value="DZ">Algeria</option>
<option value="AO">Angola</option>
[Code]...
This object is ok, and shows up correctly in debug mode. The problem is I have a country name i.e. private var _country:String = "Angola";, and I want to get the corresponding value 'AO' from the XML object. Do you know how to do this?
I have tried loads of Livedocs examples, but cant get it to work. P.S. I am working on a HtpService & WebService driven app to display global weather conditions overlayed on a Google Maps interface. Going to make it available to the Flex community when finished.
Basically I have 2 classes, A and B. B derives from A. Inside A, I declare a static variable/constant to the class of B. When I run the program, I get a null object reference error, with the line pointing to the class declaration of B, i.e.
Code:
public class B extends A
For reference, these are the 2 classes:
Code:
package
{
public class A
{
[code]...
Also, this error only occurs when the variable is static. If it's just a normal variable it works fine, i.e.
Code:
private var OTHER:Class = B;
If I change the static variable to point to a different class, it's also fine, i.e.
Code:
private static var OTHER:Class = Main;
I can probably work around this, but it's a bit of a pain in the ass. Anybody know what's causing it, or is this a Flash bug?
I have one MXML File as
<objecthandles:ObjectHandles xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" backgroundAlpha="1" xmlns:mx="library://ns.adobe.com/flex/mx"
[code].....
We are trying to automate our flex application. After adding automation libraries to our project we get the following exception:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mx.automation::AutomationManager$/addDelegates()
at mx.automation::AutomationManager$/addDelegates()
at mx.automation::AutomationManager$/addDelegates()
[code].....
We are using Flex 3.4 and maven2 to build the application.
I want to use the Event metadata tags to show what types of event my control will dispatch. The syntax looks like:
<fx:Metadata>
[Event(name="eventName", type="MyEvent")]
</fx:Metadata>
It seems like a best practice in Flex/Actionscript to define static variables that define event names like so:
public class MyEvent extends Event
{
public static const EVENT_NAME:String = "eventName";
// Other stuff..
}
It's a great practice since the event name can change easily and not have to be modified throughout the code. So my question is: Is there any way to use this static const in my metadata event tag? I can't seem to do something like this:
<fx:Metadata>
[Event(name="{MyEvent.EVENT_NAME}", type="MyEvent")]
</fx:Metadata>
Am I just ignorant of the proper syntax to do this, or is it impossible? Seems like it's just asking for hard to find bugs if someone decides to change the const since it is not strongly typed here.
I am getting this error, randomly when I start my application (and it's sub applications). As you can see the stack trace is rather useless, although through the debugger I can see the parent of container (second in the stack) is an MXML class that has a repeater that repeats another component. Therefore I guess the component with the problem is that repeated component, although I am unsure what I can change to stop this from happening. If anyone can give me some insight to the FocusManager or the getFocus() function it would be really handy.[code]
View 1 RepliesHere is the error:TypeError: Error #1009: Cannot access a property or method of a null object reference.at mx.styles:: StyleProtoChain$/ initProtoChainForUIComponentStyleName()[C:autobuild3.2.0frameworksprojectsframeworksrcmxstylesStyleProtoChain.as:72][code]......
Maybe you could school me in how to keep null object references out of complex Classes?
If I set an Object = null, does that remove all references to the Object's variables assuming there are no external references to said variables? Or do I have to manually set all said variables = null?
View 4 RepliesI have function init, which runs on the creationComplete of the application. The init calls get_login_share_object funtion, in which objects are created, which are null.
Now my problem is that, I get a null object reference error on the Alert in "init()". How can I avoid that. Is it possible that I can have a check to see, if the objects are null the program should just skip reading the objects.
private function init():void
{
var stored_credentials:Object = get_login_share_object();
[Code]....
the script i wrote is working fine. but the script attached to the flash player which i have no control over is throwing a script error (im using IE8).how can i fix this? if i run it locally there is no error.
'null' is null or not an object
try { document.getElementById("").SetReturnValue(__flash__toXML(function() { return document.location.hostname; }()) ); } catch (e) { document.getElementById("").SetReturnValue("<undefined/>"); }
but this is from flash script and i dont have control over it. it just say JScript - script block.
I am a novice in Facebook developer by choosing ActionScript 3 as my developer platform. I use SWC library from official facebook-actionscript-api that promoted by Adobe.So I followed their tutorial.[code]
View 1 RepliesWe are trying to automate our flex application. After adding automation libraries to our project we get the following exception:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mx.automation::AutomationManager$/addDelegates()
at mx.automation::AutomationManager$/addDelegates()
at mx.automation::AutomationManager$/addDelegates()
at mx.automation::AutomationManager$/addDelegates() .....
We are using Flex 3.4 and maven2 to build the application. Flex-testing?
I try to do preloder in Flex for my project written in Flash. I make this with the help of this site link text My Flash project have next source in main class called Game
stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDown);
stage.addEventListener(KeyboardEvent.KEY_UP, keyUp);
private function keyDown(event:KeyboardEvent) {
[Code]....
Flex application work but Flash application does not react to button presses
how I can make preloader and work buttons together
I am building a AS3 only project and got runtime error that said "Cannot access a property or method of a null object reference."
Here is my code:
main.as
public class videoMain extends Sprite{
private var videoPlayer:Player;
public function videoMain (){
[code]....
TypeError: Error #1009: Cannot access a property or method of a null object reference have a mxml file that has actionscript inside of it, I'm trying to call a function in a button outside of this actionscript in the same mxml file. I'm calling the public function cancel(); like this click="cancel();" but i'm getting an error 1009 that I can't access a property or method of a null object reference
Code:
<?xml version="1.0" encoding="utf-8"?>
<mx:HBox
[code].....
I have the following piece of code(part of a much bigger program). I this code I am re-using a motion that has been previously used successfully. The trace stmts are used to identify the exact location of the error and the error conditions as best I can.[code]
View 4 RepliesWhen you cast null to an object using Object(null), the result is an object.When you cast undefined to an object using Object(undefined), the result is an object.But saying null as Object or undefined as Object remains null.Why is this? I can't find anything in the documentation about this.
The objects that result from these casts can have properties set on and read from them. It's as if the cast created information, or removed whatever special information the null and undefined values have. But there's no indication in the AS3 documentation that the null and undefined special types are actually objects.
I changed my html template to include flashvars like so:
if (hasRequestedVersion) {
// if we've detected an acceptable version
// embed the Flash Content SWF when all tests are passed
[code]...
And I am trying to access them in my app like so:private static var _PID:uint = Application.application.parameters.product_id;
But I am getting this error:
Error #1009: Cannot access a property or method of a null object reference.
Simple to understand problem, hoping for similarly easy solution:When I type in my search query, I sometimes get the "Error #1009 Cannot access a property or method of a null object reference" on the dataField = new ArrayCollection(result.data); line.
AS3:
private function getSearch():void
{
[code].....
I am trying to use a button in my init() method.
<?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="Test"
creationComplete="init()">
Now when I try to do something with my button I get the error mentioned. I am assuming maybe it has not loaded yet?
[Code]....
I have a flex application which use DragManager.When I'm loading this application into flash application and trying to use drag'n'drop functions - I get an error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mx.managers::CursorManagerImpl/showCurrentCursor()
at mx.managers::CursorManagerImpl/setCursor()
at mx.managers.dragClasses::DragProxy/showFeedback()
at mx.managers.dragClasses::DragProxy/mouseMoveHandler()
But, when I simply run a flex application (not loding it into a flash one) everything works properly.
How do you set a variable attribute of a xml element?This is what I expected to work:xmlElement.attribute(variableAttr) = "the variable attribute is set to this string";
However, I'm getting some error that this value can only be retrieved as a reference and not set.Ofcourse, the following does not work either as it will look for the attribute named "variableAttr" and not for the attribute named after the value of the variable variableAttr:
xmlElement.@variableAttr = "example";
I have an XML file loaded at run time.Among others, it contains several nodes which contain a name attribute and a value attribute.I want to be able to select name by value and vice versa.If I try and trace out a name by selecting its value, I get exactly what I expected:
[AS]
trace( "NAME: " + SiteModel.instance.constants.(@value==section).@na me );
[/AS]
But, and this is what I've been screaming at for most of the morning,if I try and assign that name to a variable, and trace the variable, I get epic fail:
[AS]
var n:String = SiteModel.instance.constants.(@value==section).@na me;
trace( "NAME: " + n );
[/AS]
Trying to trace that variable results in a TypeError:
Code:
TypeError: Error #1010: A term is undefined and has no properties.This is stupifyingly ridiculous in my opinion,
As we know whent here is no such variable of null value assignment to a variable or instance flash throws this kind of Error.In one of my Application i need to get more flashVariables, They may or maynot come as FLASHVARS. But when i miss any variable flash thows this error as an alert box. is there any simple solution to avoid this kind of issue
when i use try,Catch statement the issue will not come, But i don't like to write Bunch of try,catch statement for all this kind of variables.