Flex :: Access A Custom Property In A Custom Class?
Jan 25, 2010
I couldn't work it out yet...
package components {
public class templateSelection extends VBox {
static public var tempSelectionBag:Dictionary;
[Code]....
I want to have a custom class tempSelection with a Dictionary as a public accessable property of that class. If I use this code, the compiler tells me:
1046: Typ wurde nicht gefunden oder war keine Kompilierungszeit- onstante:Dictionary
Which translates to:
Type was not found or was not a compile-time constant: Dictionary
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Similar Posts:
Jan 23, 2010
I am new to AS3, as well as Flash in general, so forgive me if this seems highly elementary. All I am trying to do is create a custom class that extends the MovieClip class and contains a custom property of "marker". I want to be able to use and change the value of this custom property on the timeline for an instance of this class and have it behave just like any other (Ex: this.x ==> this.marker).
[Code].....
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Dec 28, 2009
Is there a point of creating custom event class if i dont need to pass custom property with that event?
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May 14, 2010
I would like to know if it is the same to assign properties to my custom component in its own class, or from the parent document. Here I assign the property bottom in my custom component class:
<?xml version="1.0"?>
<mx:LinkButton bottom="20" >
<mx:Script>
Here I assign the property bottom when I use the component in my main MXML file
<myComp:Brick bottom="10"/>
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Jan 18, 2009
I am trying to create a custom class of my AS3 XML News Ticker. I am getting the error "1120: Access of undefined property" for references to objects which are already on the stage i.e. not dynamically created. I am pretty sure that it is an encapsulation issue.
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Nov 4, 2011
I have the following situation:I have an event handler, that displays small messages in my application's statusbar.These messages get passes through by dispatching events from custom components.A simple message could be like "HTTP Error" or so.Now, the main event listener, in the main application file, listens to the event dispatched by any custom component,but seems to refuse listening to events dispatched by custom AS classes.Here is my code for the custom event:
package main.events
{
import flash.events.Event;[code]..
So to sum it all up:
- The event listener listens to the custom event dispatched by any custom component.
- The event listener does not listen to the custom event duspatched by an AS class.
Those who wonder, the event really gets dispatched, that's why I added a trace call.
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Aug 25, 2009
i am a bit embarassed to ask this, but i do this so much i have to ask. Occasionally, i need to pass/handle custom events on the fly. Rather than creating a whole custom event class, i will just do something like
Code:
myObject.dispatchEvent(new Event('thisCustomEvent'));
//and then handle it later
[code]....
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Jun 22, 2011
I have a Custom Component that has a couple of Canvas with some background colors assigned to them. Now i have hard coded the colors, i want to move them to an external css file. So i would like to have the css declaration like this :
[Code]...
My question is if i can define custom style names like dividerRightColor and if so, how can i use that value inside my MXML Component? I have seen examples of using them inside Pure AS components.
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Mar 2, 2012
This is NOT duplicate of my earlier post (its is slightly different)But this is similar issue with similar error but its not the same error The error I am getting now is below while dispatching the custom event from my custom component
TypeError: Error #1034: Type Coercion failed: cannot convert events::MapEvent@a74ab51 to flash.events.MouseEvent.
dispatchEvent(new MapEvent(MapEvent.CLICKED_ON_MAP));
Note: The error in my earlier post is giving below error message
Type Coercion failed: cannot convert flash.events::Event@81ecb79 to com.events.ShopEvent
The difference here are two things, the earlier error is while converting flash event to custom event and now this one is while converting custom event to flash event and secondly, I have no clue why it is trying to convert to the mouseevent where I am just dispatching my custom event with proper listeners.
This is my custome event
package events
{
import flash.events.Event;
import ui.map.MapElement;
[code]...
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Jul 24, 2010
I'm having trouble accessing the variables of my main class from other class objects UNLESS the objects are extensions of the Sprite or MovieClip class, have been added to the display list as a child of the main class instance, and I am able to use the this.parent.variable syntax. What I'm wondering is, isn't it possible to have a simple Object declared and instantiated, residing in memory and able to access another object's properties, without it being a part of the display list? Am I doing something stupid here?
Let me explain the code a bit in case it's a design flaw on my part. (I'm still learning AS3 and am not completely fluent with it yet).
I have a project with about 15 custom classes. There are no frame scripts in the .fla file. I am using it basically as a library only. The document class (let's call it Calculator for this example) extends the Sprite class and specifies the properties for the SWF dynamically. All other classes are instantiated from this main class. I have a bunch of variables that I want accessible to the different classes, so to keep them in a central location, I have declared them in the Calculator class, and am trying to access them from the other object instances.
(It should be noted that there ARE animations that need to play at times, so I'm assuming I can't NOT extend the MovieClip or Sprite class when creating the document class.
For this example, let's say there's another class called XMLLoader.as, whos instance was created from within the Calculator class, that needs some information stored in the Calculator class' variables. Incredibly simplified code for the two classes might look like this:
Document class:
Code:
package {
import flash.display.*;
public class Calculator extends Sprite {
[Code].....
So, in the code above (I've bolded the most important lines in red), the only way I have been successful at accessing the variables declared in the document class from other classes is to extend the MovieClip or Sprite class when I create the custom class, add the object as a child of the document class (Calculator), create a generic variable cast to the datatype of the document class, and use it to access the variables.
This seems really excessive to me, and I'm wondering if it is, or if this is simply a limitation of ActionScript. Does, for instance, a URLLoader object actually need to be associated with a MovieClip included in the display list in order to access internal variables of the main class object? Is it me, or is that really convoluted? Shouldn't it be able to exist in memory separate of the display list and still have access to varibles declared from the main timeline (i.e. the document class in this case)? Is there no other syntax for accessing these elements? Have I done something limiting with how I've designed this or declared the variables?
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Jun 4, 2009
I have a custom function that doesn't function correctly the first time the function executes it removes a textFiled from the display list without a problem but the second time that it executes it won't remove a diffrent textfield and I don't know why here is the code from the time the textField is added to the diplay list to where its deleted.Btw the function in question is being executed by a custom event listener.....the errors i receive are TypeError: Error #1009: Cannot access a property or method of a null object reference...Also note that i can remove the textField in question from any function other thatn the one the custom event executes.
PHP Code:
sendBtn.addEventListener(MouseEvent.CLICK, sendMsg0,false,0,true);
msgOut.addEventListener(KeyboardEvent.KEY_DOWN, sendMsg1,false,0,true);
comboBox.addEventListener(Event.CHANGE,chFontSize,false,0,true);[code]..........
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Jun 23, 2010
I have a custom class which creates a new MC using a library MC. The library MC contains a dynamic textfield called productName.The custom class object gets created fine and is displaying on the stage. It's also holding custom properties I set as well.How do I control the dynamic textfield inside the MC, which is inside the custom class object?My Product.as:
Code:
package {
import flash.display.MovieClip;
[code]......
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Apr 29, 2011
I'm trying to write a custom class for a library object. for example i have a movieClip in my library and there is a textField in it instance name is textField .
i exported my clip for actionScript and i write class definition like "com.xxx.MyClipClass". it's ok, there is no problem. but when i want to access to textField in MyClipClass like this.textField.text ="abc" i got an error undefined property.
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Jun 23, 2010
I have a custom class which creates a new MC using a library MC. The library MC contains a dynamic textfield called productName.
The custom class object gets created fine and is displaying on the stage. It's also holding custom properties I set as well.
How do I control the dynamic textfield inside the MC, which is inside the custom class object?
My Product.as:
Code:
package {
import flash.display.MovieClip;
public class Product extends MovieClip {
[Code].....
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Jun 23, 2010
I have a custom class which creates a new MC using a library MC. The library MC contains a dynamic textfield called productName.
The custom class object gets created fine and is displaying on the stage. It's also holding custom properties I set as well.
How do I control the dynamic textfield inside the MC, which is inside the custom class object?
My Product.as:
Code:
package {
import flash.display.MovieClip;
public class Product extends MovieClip {
[Code].....
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Jul 26, 2009
How do I access Stage Class properties in Custom Class?
Class:
package {
import Main;
import flash.events.*;
import flash.display.Sprite;
import flash.display.Stage;
public class Run extends Sprite {
[Code] ....
Output:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
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Jan 1, 2012
I'm currently trying to add the resulting XML (xmlResult) to a textbox that is on the stage. I did try using MovieClip(root).[instancename].text = ..... however it didn't work - null object reference?
package {
public class ChatHistory extends MovieClip {
public function ChatHistory()
[Code]....
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Nov 28, 2008
i wonder why i am unable to access the public properties of this custom class the public var w:Number; and the Public var h:Number; i am tracing them and on an instance of the PreLoader() Class.. and ia m getting NAN;
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Oct 31, 2008
i try to migrate from as2 to as3 and i have one problem When i attachMovie from library (addChild in as3) and i add custom property its work fine.Here is ex.
Code:
var i:int;
for (i=0; i<5; i++)[code]....
when i attach to that symbol custom class in the library.i got the error: #1056:Cannot create property...
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Sep 24, 2010
[code]...
How can I do that? Or I need to extends the Image class?
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Dec 2, 2011
This is my first time working with a class attached to a movieclip that is nested inside a class attached to a movie clip.I've tested all the properties and methods of PTListItem.as and they work properly but when I try to call them on the list item through PTListTop.as it returns undefined.The end goal is to dynamically load a checklist via a txt file.
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Feb 24, 2009
I have a custom class I am working on, one of the methods is:[code]Inside that function a dynamic TextField is created called txtLoaded, it is declared with [code]mcProg is added to the stage, I see the txtLoaded txt field drawn as well and I can trace properties of mcProg from elsewhere in the class but I cannot access mcProg.txtLoaded from anywhere else in the class.I imagine this must be a scoping issue, with txtLoaded only existing inside the createProgress method, but is there any way for me to be able to access txtLoaded from elsewhere in the class?
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Aug 3, 2011
I have a custom component of which have a advancedDataGrid inside it. I want thiscomponent to be reusable so need is set the datagid selectionMode as a component property.In mxml i want set property like this:
<comp:MyComp itemDataGridSelectionMode="singleCell" .../>
Inside MyComp actionScript i have a metatag like this:
[Inspectable(enumeration="singleRow, multipleRows, singleCell, multipleCells",
[code]......
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Jan 30, 2012
I have a custom Flex 4+ component that I am trying to make and have the skin be aware of changes to a custom property. This property will determine the graphic on the button (and some other visual changes) but the data will change constantly as it will be updated by a timer.
I've looked at untold examples and still seem unable to get the syntax correct or discover how things should be separated. I've looked at overriding commitProperties and the PropertyChangeEvent without success. So I have two questions.
1) How can I get a skin to be notified of a bound property when it changes?
2) If the data for a bound property of the component is an object, will binding work properly if a property of the object changes (or would it be better to pass each property separately)?
[Code]...
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Jun 16, 2011
I have a custom class being constructed from my main class. In the custom class it has another custom class that is passed in as a parameter. I would like to strictly type the parameter variable but when I do, 'the type is not a compile type constant etc'.This, I understand, is because the custom class used as a parameter has not yet been constructed.It all works when I use the variable type ( * ) to type the parameter.I suspect this is a design flaw, in that I am using an incorrect design pattern.It is actually hand-me-down code, having received a large project from someone else who is not entirely familiar with oop concepts and design patterns.
I have considered using a dummy constructor for the parametered class in my main class but the passed in class also takes a custom class (itself with a parametered constructor). I am considering using ... (rest) so that the custom classes' parameters are optional.Is there any other way to control the order of construction of classes? Would the rest variables work?edit)in main.as within the constructor or another function
var parameter1:customclass2;
customclass1(parameter1);
in customclass1 constructor:
[code].....
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Dec 11, 2010
In the main file, I would write[code]...
But if I want the component to have that behaviour innately, where do I write it in the mybutton mxml file to have it reference itself?[code]...
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Dec 6, 2009
So I have a movie clip associated with an external class in the linkage dialog. I put that movie clip on the stage. I have another external class that contains some code (not for the movie clip but for the stage). When I access the custom properties of the class in the actual flash file (not the external code) everything works fine.For example.myMovieClip.explodeTheCode = true;works in the main movie. However, it doesn't work in the external flash file when I have a reference to that movie clip.myRefToCustomMovieclip.explodeTheCode = true fails!It throws an error. In java, I'd just import the custom class the movie clip is linked to and then I can call all the extra custom methods on the movie clip in the external class I want. However, this does nothing. I still can't access any properties.So my question is, how do I access the custom features of a movie clip (that is linked to a custom class) from an external code file. It works in the movie, but not in the external source code.
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Jun 7, 2011
Using SDK 4.1 I was able to access custom properties of a custom button component from a custom skin. The project I'm currently working requires SDK 4.5 and I'm unable to to access the properties. Here's an example:
[Code]...
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Sep 8, 2011
I have a custom Flex 4.5 component (to be used in a List) -
Game.mxml (represents a clickable playing table in a card game):
<?xml version="1.0" encoding="utf-8"?>
<s:ItemRenderer [code].......
But I never see the "game clicked: " trace. Does anybody please know why? I'm probably missing something minor, because I can see the "Clicked: 8946" trace.
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Feb 16, 2012
This is similar to the question asked here. I am dispatching custom event "ShopEvent" but i am getting error "Type Coercion failed: cannot convert flash.events::Event@81ecb79 to com.events.ShopEvent"Note: Error is thrown from the parent custom component (3rd code snippet), I have added more details thereThis is my custom event. See the first constant, I copy pasted the event name in custom components.
package com.events
{
import flash.events.Event;
[code]......
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