Actionscript 3 :: Watching An ArrayCollection's Length Property In Flex?
Nov 12, 2009
I would like to put an eventListener on an ArrayCollection's length proprety, but I don't know how to go about this.
I want to do this because I only want code to execute when a certain number of things are in a certain ArrayCollection. I want Flex to wait to execute this code over the next object until that length property drops back to an acceptable level. I think I should do this with events instead of a while loop that sits there spouting NOOPs forever (which I don't know how to do either).
View 2 Replies
Similar Posts:
Sep 8, 2009
In my flex app I have a public bindable property.I want it so that every time the value of that property changes, a function gets triggered. I tried using ChangeWatchers, but it seems those only apply to built-in components like a text box change.i would like to do that same behavior with a property that changes at runtime.
View 4 Replies
Nov 19, 2010
I need to display the number of items in a List component that has a filtered ArrayCollection as its data provider. I don't see a way to get the filtered collection's length.
View 1 Replies
Apr 24, 2011
My Dataprovider for a grid is an arrayCollection which is dynamically loaded with Objects . for example : a person object with persionID,PersonName ..etc . I applied a filter function on my dataprovider based on personID . below is my function
public function FilterFunc(item:Object):Boolean
{
var same:Boolean=String(item.personID ) == filterpersonID ;
return same;
[Code]....
this function is called whenever a new object is being added to the arraycollection . The problem now is dp.length in the above function is returning only the no of objects of the particular personID on which the filterFunction was applied instead of the absolute value . Its not limiting the size of the other objects which are runnning into thousand's causing memory issues . once i change the filterFunction to different personID , it slowly starts limiting the respective personID objects. So the sizeHandler() limits only the personID objects for which filterfunction was applied instead of the whole objects , this is the problem .
View 2 Replies
Dec 15, 2010
I have a component where I expose the property 'questions' with the following code:
private var _questions:ArrayCollection;
private var questionsChanged:Boolean;
[Bindable("questionsChanged")]
[Code]....
In this component, I use commitProperties() to implement my logic.
I use Cairngorm and the 'questions' is in the model and hence it's defined as a source for data binding.
When the 'questions' ArrayCollection's size changes elsewhere in the application, it is not invoking the setter method in the component that is destination for the data binding.
View 1 Replies
Jul 13, 2010
I am passing a complex object from my .NET library to my Flex application via WebOrb.In order to automatically translate, I am using the [RemoteClass] meta data tag as follows:[code]This works absolutely fine, until I try to extend the Plan class to contain an array of complex items:[code]but the set function never gets called.What can I do to get the children into my Flex app in this way?
View 1 Replies
Nov 19, 2010
I'm curious of the best way to detect that an arraycollection contains duplicate objects as determined by an object's property value. For example, var _myArrayCollection:ArrayCollection = new ArrayCollection([{name: "name1", value: "value1"}, {name: "name2", value: "value2"}, {name: "name1", value: "value3"}]);Notice that this arraycollection has 3 items. 2 of the items have the same value for the name property. I would consider this a duplicate. Any ideas what the body of this method would look like? I have ideas but none of them feel very elegant.
View 3 Replies
Oct 14, 2009
I have some XML structures like this:
var struct:XML = <mh>
<mi id="1" stuff="whatever"/>
[Code]....
I wonder if items can be accessed in a similar way, like this:
var stuff:Object = cmenu['id == 2'].stuff;
View 8 Replies
Oct 27, 2009
I'm new to Flex and am using TileList bound to an ArrayCollection. The array collection is empty at load time, and then updates with the results from am HTTPService call. The problem is that the item renderers aren't being rendered as expected, I'm guessing because there was no data when they were first rendered at load time. Here's simplified example:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" >
<mx:Script>
[code].....
View 2 Replies
Jul 13, 2010
I am passing a complex object from my .NET library to my Flex application via WebOrb. In order to automatically translate, I am using the [RemoteClass] meta data tag as follows:
ActionScript Code:
[RemoteClass(alias="test.PlanVO")]
public class Plan
{
[Code].....
but the set function never gets called.
What can I do to get the children into my Flex app in this way?
View 1 Replies
Dec 16, 2010
When I set a breakpoint and debug my application, Flash Builder 4 is not displaying static variables within the variables window. I'm using flash builder 4 to execute flex unit tests on one of my AS3 classes. I set a static variable within the [Before] function, which is accessed in each of the tests. I've set a breakpoint within one of the tests to see why it is failing, but I notice that static variables don't appear when I expand the 'this' object within the variables window. (In this case my static variable is the only variable associated with the class, so the only object in the variables window is the "this" object). How to make static variables appear in the variables window?
View 2 Replies
Jul 29, 2009
I have a Flash based media player loading mp3s at 22.050 khz, and for some reason the length is being reported as a little over twice what it should be. Is there anything I can do, short of dividing the results by 2?
View 4 Replies
May 17, 2010
I have two values which are both ints: val1 and val2.
I set a movie clip's width equal to the difference of the two values:
mc.width = val1 - val2
After doing this calculation, the width of the object is 149.9 when it should be 150. This happens for other values as well. When I trace(val1 - val2), it returns 150.
What seems to be happening is the width value of my movie clip is not adjusting correctly. My movie clip is composed of a bunch of bitmaps and filters. I didn't think this would be a problem, but when I switched it out for a plain shape, the problem went away.
Is there something funny about bitmaps or filters that would make the width value screw up by .1?
View 12 Replies
Sep 30, 2009
I am looking at "length" property in the Adobe AS3.0 language ref as I do not understand it. It says: An integer specifying the number of characters in the specified String object. (I understand this). Because all string indexes are zero-based, the index of the last character for any string x is x. length - 1. (I do not understand the "- 1". I understand that all string indexes are zero-based but I cant put this together with the last character for any string being -1 or whatever it is saying.
View 7 Replies
Oct 13, 2011
I would like to know what bitrate is song, so I count it this way:
var bitrate = Math.floor( 8*_snd.bytesTotal/_snd.length);
but unfortunately I can not retrieve valid value for _snd.length before all the song is loaded. Is there any other way to achieve that value?
View 2 Replies
Feb 3, 2010
I am using an array to return data to an application and as the array is filled with data using a loader and the order is important it happens that data in slot n is inserted later than data in slot n+1. How do I know that the array is full as I know the number of elements to be loaded? The length property doesn't work for this. I could go through the array each time I put something in and look if every slot is full but that seems ineffective.
View 1 Replies
Jul 24, 2011
I have 3 input textfield. Each textfield has a string pre-loaded into it. When user pressed Tab, the focus should be cycled around textfield 1-3. Now, I'm trying to set the caret index to the last letter of the textfield. What is wrong with the code?
Code:
public function myTabKeyDown(event:KeyboardEvent):void
{
[code]....
View 3 Replies
Oct 7, 2011
I have a advanced datagrid and populating some data by using arraycollection. And i am filtering the arraycollection, the arraycollection index got changed.
Arraycollection:- [0] - name: abc
[1] - name: hello
[2] - name: hello1
[3] - name:hai
after filtering the arraycollection as 'hell' , the array collection is displaying like the below:
Arraycollection:-
[0] - name: hello1
[1] - name: hello
Can i know the reason why the index got changed after filter it?
* no server side code for filtering. it is only flex side filtering.
View 2 Replies
Mar 9, 2011
Let's say I have array foo and a positive integer y, where foo.length > y.I want to remove elements from foo so that foo.length becomes y (or very close to it).Also, I need to preserve the first and last element of foo. The indices of the removed elements must be spaced apart as equally as possible. Foo can be sliced, or it can be used to create a new array.
Example: if foo = [a,b,c,d,e,f,g,1,2,3,4,5] and y = 6, then trimmedfoo could be [a,c,e,g,2,4,5] or maybe [a,c,e,2,4,5], but not [a,c,e,g,2,4] because the last element of foo is missing.
View 4 Replies
Dec 22, 2011
how to do this
function foo(x:*, ...args):* {
}
function bar(x:*, ...args):* {[code].....
how to expand args ? when I call bar(1,2,3), I wish it call foo(1,2,3), but it call foo(1,[2,3])
View 2 Replies
Apr 19, 2011
Is there any way to determine if a (anonymous) function has defined the ...(rest) parameter in ActionScript 3? I know there's the function.length property, but it only counts the explicitly defined arguments.
View 2 Replies
Feb 4, 2011
i have a problem using the itemRenderer functionality. When using an ArrayCollection the visible Data in the DataGrid using the itemRenderer will be rendered just fine. But if i start scrolling the entries are repeating in the cells using the renderer. The cells are not filled with date according to the id. What mistake i'm doing here.
I read a lot of the explainations like:
[URL]
here is the code for the set data function (itemRenderer is extending HBox):
override public function set data(value:Object):void {
_data = value;
if(data!=null)
[code]....
View 1 Replies
Dec 16, 2004
I am trying to get the length of arrays within an array, here is my example (MX 2004):
[Code]...
I get an output of of 3. the number of variables within the first array, this is not what I had expedted.
View 2 Replies
Apr 20, 2010
the applicable differences between an ArrayCollection and a Vector in flex? I'm unsure if I should be using one over the other. I saw that Vector is type safe and that makes me feel better, but are there disadvantages?
public var ac:ArrayCollection = new ArrayCollection();
versus
public var vec:Vector.<String> = new Vector.<String>();
View 4 Replies
Mar 19, 2008
Is there a way to find out when someone is watching to the swf? For example i have a swf loader but it preloades all swf behind each other [swf]-[swf]-[swf]
I can slide between each [swf] but the swf contains animations, they start playing when he preloads the [swf]'s. Is there a way i know when someone is watching the swf and then start the animation?
My first solution was a onmouse but it doesn't work when you don't have your mouse on the [swf].
View 1 Replies
Jul 26, 2011
Setting the text property of a flex DateField makes the selectedDate property of that DateField go to null.I need to set the text property so that I can use a particular format (DD-MMM-YYYY).
View 2 Replies
Jan 9, 2011
Lately i discovered MATE (for Flex development) and was wondering: how do i bind a property in a view (actually a navigatorcontent component) to another property in a class so that they stay in synchronization (meaning that whenever the property in the class changes the property in the view also changes).
So if we have a view called Target.mxml and a property targertProp how do we bind it to the class called SourceClass with property SourceProp?
View 3 Replies
Jul 24, 2009
In Flex, it's easy to convert the XML to Object and to ArrayCollection by using var decoder:SimpleXMLDecoder = new SimpleXMLDecoder(); decoder.decodeXML( xml );
But is there a good way to convert ArrayCollection to XML.
View 3 Replies
Sep 22, 2009
I currently have an arrayCollection in Flex and I want to sent it to PHP (Zend_AMF). According to the Zend_AMF wiki, sending an arrayCollection over directly will force Zend_AMF to cast the arrayCollection as an object which is no good. I'd rather have an array of my models. I assume the best way would be to convert the arrayCollection to an array in flex and then send it over. Is this true, and if so how would I do that in Flex 3? If you have a better recommendation,
View 1 Replies
Oct 21, 2009
Is there any way in Flex where in we can sort an arraycollection based on strings .I have a dataprovider with strings like "Critical" "High" "Medium" "Low" where in I need to sort it in such a way that I need Critical to be displayed on the top and next High , Medium and Low follows.
View 1 Replies
