Flex :: Why List Not Displaying Data From ArrayCollection
Feb 23, 2011
I'm working on a flash cards application and am using an ArrayCollection of Objects to store each cards individual data. When the user click the 'save' button, the text from the two textAreas and the 'title' textinput are stored in the AC as one object with .title, .side1 and .side2 properties that contain the text from the flash card. I have made a List in a separate class I want to have display the title of each card the user has created, but after days of researching and looking around, I still cannot get the display to list the titles.
Part of my NewCard.mxml:
<?xml version="1.0" encoding="utf-8"?>
<fx:Script><![CDATA[
import flash.events.EventDispatcher;
import mx.collections.ArrayCollection;
import spark.effects.SlideViewTransition;
[Code] .....
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Feb 22, 2011
I would like to have a List displayed that displays data collected from the user into an ArrayCollection. I have a main DataHandling.as class that "adds" the data to the AC as an Object, but when I use trace() on the AC from another class, it does not show any values being present in the AC.
I also added some test data to make sure I was populating the AC correctly and that works just fine. I just can't seem to figure out how to add data (text specifically) to the array from another class. (The other file is .mxml)Here is my mxml code (MyCards.mxml):
ActionScript Code:
protected function myCardsList_creationCompleteHandler(event:FlexEvent):void
{
// This traces the 'cards' ArrayCollection from the other .as class
// No values are listed
[code]....
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May 14, 2011
I have an ArrayCollection named authors with lot of texts of different size. I would like to list all info about authors in a way that each item has a size according to the text.
Here is the code:
<mx:List dataProvider="{authors}">
<mx:itemRenderer><mx:Component>
<mx:VBox width="100%">
<mx:Text text="{data.name}"/>
<mx:Text text="{data.about}" width="100%"/>
</mx:VBox></mx:Component>
</mx:itemRenderer></mx:List>
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May 22, 2009
I have an arrayCollection of objects that extend Sprite, and have bitmaps within them. I want to display these in a list (or some other component that would allow a user to scroll through them, and see their associated data.)
When I do: myList.dataProvider = myArrayCollection
the list just shows a bunch of lines of [Object, Item] instead of the visual sprites.
Here is a simplified version of my Object:
public class myUIC extends UIComponent
[Code]...
Tried many different ways to get it to show up in a List, but can't do it.
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Dec 14, 2010
I have a POJO which declares a collection of List<Long>.
We're currently sending an ArrayCollection of Number, and it's arriving at the client as an ArrayCollection, populated with IntegersGiven the issues with Type Erasure & generics I understand how this is happening. How do I fix it?
Unfortunately because of some internal limitations, the model cannot be changed. Ie - we can't use a subtype, and we can't implement IExternalizable.Are there other options for registering custom type converters in LCDS, other than IExternalizable? Alternatively, are there any annotations we can use that indicate the type to be used for a collection?
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May 4, 2011
Objective:I would like to pass Skins to an itemRenderer (which is a Button) of a List, and be able to skin every button in that List.This is what I have:
List:
<s:List itemRenderer="renderers.ItemRenderer" dataProvider="{collectionWorkspace}" />
ArrayCollection:
<s:ArrayCollection id="collectionWorkspace">
<comp:Layout1 />[code]...
I get an error (fixed for clarification):Error: Skin for Application....Button1 cannot be found.
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Jun 3, 2010
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[Code]...
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May 30, 2011
I'm a Flex noob and I've been struggling with this problem for a last week, and I'm at my wits end.
I have opened the following XML file
<root>
<person>
<city-of-death>asdf</city-of-death>
<place-of-death>qwert</place-of-death>
</person>
[Code]...
I would be so incredibly grateful if someone could help. I am pulling out my hair!
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Apr 6, 2010
Let's say I had an ArrayCollection like this:
public var ac:ArrayCollection= new ArrayCollection([
{item:"dog", group:"Animals"},
{item:"orange", group:"Fruits"},
[Code]....
How would I create a Tree component in Flex 3 that uses the groups as nodes, with the appropriate items listed under each node?
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Sep 23, 2011
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Nov 6, 2009
I have a List, that is not showing any items until you scroll, then the items show up. Does anyone know how to fix this? I tried calling list.invalidateDisplayList(); and list.invalidateList();
EDIT: Here is some code:
<mx:Script>
<![CDATA[
[Bindable][code]...........
I found that if I add creationComplete="{list.dataProvider = _xmlList }" It solves the problem.
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Nov 10, 2009
[code]...
Here am getting array of groups(groupName,GroupID each row ) from a RemoteObject and displaying in a ComboBox. I am selecting the groups with selectedIndex as 0,1,2,3, but I want my groupIDs of correspoding groupnames,which am bringing to client side.
How can I get actual the groupId of the selected group?
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Jan 26, 2011
My label text is not showing up after binding the arraycollection to the label text. Could I see an example of how to properly bind an arraycollection to a labels text?
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Jul 24, 2011
i would be glad if anyone can answer this.
i have an actionscript class as follows:
package
{
[code].....
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Mar 7, 2012
I am developing a panel in Photoshop with Flex and Extendscript. I am pretty close to getting this to work, but with my Flex skills I am having a little issue with the Array I am pulling in from the jsx file. The array is displayed fine in the alert box, but somewhere between my split and creating new collection something is wrong.
Here is my Flex
protected function loadData():void {
var grabFolderNames:SyncRequestResult = CSXSInterface.instance.evalScript("labNames");
var list:String = grabFolderNames.data;
[Code]....
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Sep 25, 2010
I want to create a list of progress bars and update the list accordingly.I have group data in an Array as
<mx:Array id="arr">
<mx:Object label="Group One" min="0" max="200" currentValue="60" />
<mx:Object label="Group Two" min="0" max="300" currentValue="50" />[code]....
The values in the array object indicate name of group,minimum,maximum and current value for the group (to be used in progressbar).I used the list with "mx.controls.ProgressBar" as itemRenderer as
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Oct 7, 2010
My data grid is displaying stale data, rather than the real time data available in it's data provider (array collection). I've tried refeshing the data in the collection, but that has no effect. Below is my code, does anyone see what could be the problem?
<mx:Accordion/>
<fx:Script>
<![CDATA[[code].....
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Feb 21, 2010
I have an ArrayCollection bound to an editable DataGrid, another component needs to know when the ArrayCollection changes (as a result of changes in the DataGrid) so it can also update itself, so is listening to the COLLECTION_CHANGE event of the ArrayCollection.
The problem is that the DataGrid only updates the ArrayCollection when the row being edited losses focus. This is not good for my app as a user could edit a column on a row and not click elsewhere on the table for a long time (causing the row to lose fucus), therefore the changes won't have propagated to the other parts of the application.
How can I make the data grid inform the ArrayCollection of a change every time there is a keyup event on a text input instead of every time a row looses focus?
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Aug 10, 2010
I have an ArrayCollection of Objects. Each Object with three attributes:CustomerID, Income and DateMy goal is to chart this data for each customer (or a couple together) in a Income by Date LineChart display. Selection of customers is done with ArrayCollection filters.Data is fetched from an SQL database, however, each customer has some data points missing.f there was zero income on August 8, 2010 there will be no entry for that.Charting the ArrayCollection as is, is misleading because there is no indication of the missing data points.One way to solve this is to artificially add zero points for the missing dates for each customer. However, this would explode the data set (and impact performance).
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Jan 5, 2012
how do you merge data (coming repeatedly from server) into a filtered ArrayCollection?
The TestCase.mxml (just place it into a Flash Builder 4.6 project):
<?xml version="1.0" encoding="utf-8"?>
<s:Application
xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark">
[code]....
The problem lies in the fact, that when the ArrayCollection _data is filtered (because the Checkbox "Even" is set), then the 2nd loop in the test case (for adding new items) adds items (the "35") again and again - because it's filtered and thus not visible.
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Mar 29, 2012
i want to create a chat app using flex 4.5 mobile project for android device. For the chat screen, i wanted it to look glossy and stylish. Hence i thought i would use the list component and disable the selection in it. I m able to add the chat messages into the list. But i doubt if large chat data might hinder the performance. Im using a collection and i ve binded it with the list. Whenever i receive a chat i update the collection and it gets displayed in the list. Can someone tell me if his could pose a performance problem as list component is not intended for this purpose.
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Aug 23, 2010
I seem to have is that the Autocomplete component that seems to be part of flex extras is not displaying the list of items in the dropdown list. Basically, I get a list of blank items. I know they are there and they are the right items because as soon as I click on one, I get the right text in the combobox.
my Code in the mxml looks something like this
<mx:FormItem label="Company:" width="750" fontSize="20" horizontalAlign="right" color="#000000" required="true">
<ns1:AutoComplete enabled="true" labelField="CompanyName" textAlign="left" dropdownWidth="450" id="txtCompany" width="450" />
[Code]....
Again, when I type "T" in the text box I see a dropdown list with 3 empty items. Clicking on the third item puts "Test3" in the textbox. But the items themselves are not visible.
It almost as if its a font/foreground color thing, but I've played around with some of those settings too with no success.
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Mar 30, 2011
Im currently creating a list in Adobe Flex/Actionscript for a person search app. At the moment, the list shows 1 line of text:
<fx:Script>
<![CDATA[
import model.PersonSummary;
[Code].....
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Aug 3, 2011
I have an issue with Spark Lists whereby I am trying to ensure that an item is always selected and ensure that the GUI displays this to the user.
The application (full code below) creates a List, a Label and a Button. The Label states what is selected in the List. The button removes the selected item. Changing the selection, updates the text in the Label. Important: The List has "requireSelection" set to true to ensure that an item is always selected.
If I select the first item in the List, the selection is correctly reflected in the label. Clicking "Remove" removes the item and the next item is selected. This is all working correctly.[code]...
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May 20, 2010
I have a Flex tree with an ArrayCollection as data provider. The ArrayCollection is composed by objects linked eachother by the "children" field (that is an Array containing other children objects)
[Code]...
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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.
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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].....
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Mar 31, 2010
I have a custom dataGrid that acts more like a 2D list (if that makes sense at all). I am dynamically creating the columns and recreating the dataProvider to suit my needs. While debugging I can see that I am creating the columns and setting them to the dataGrid and creating and setting the dataProvider, but for some reason I am able to see the dataGrid and the columns but not the data.
[Bindable]
private var mockData:ArrayCollection = new ArrayCollection([
{value: "425341*"},
{value: "425341*"},
[Code]....
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Nov 6, 2009
getting data from a database and displaying it in a Flex (Flash) swf. Currently I have some C# code that gets the data from the DB and saves it to an XML file on my site. Then the .swf reads that xml file.
protected void Page_Load(object sender, EventArgs e)
{
DataTable _dt = new DataTable();
_dt = ProductList.GetProductssForAdmin(10);
[code]....
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Jan 6, 2010
I have something like this xml data
<data>
<result month="Jan-04">
<employee id="1">
[code].....
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