Flex :: Change Dataprovider In Spark List That Has Itemrenderers?
Mar 13, 2012
In flex 4.5, I have an application that has a BorderContainer that loads a spark list (mxml style - _myList and the borderContainer is stored in a library outside of the parent application) that loads an arrayCollection with an itemRenderer (I should note said itemRenderer is not an inline renderer - on selection of an item in the list, the itemRenderer expands, loads a particular control within the item renderer based on data passed from the selected item in the list) and allows the user to perform a search. This works all well and good on startup/load, until I try to change the dataProvider for the list (my app allows users to switch data sources which then creates a new dataProvider with new variables). I have tried:
[Code]...
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Oct 26, 2010
In Flex I can create an ItemRenderer to represent each item in the Lists DataProvider but how do I access the instance of the ItemRenderer via the DataProviders Object? Something like myList.getItemRenderer(dp.getItemAt(10));
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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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Jan 25, 2012
I have a list that has alternating item colors.
<s:List id="myList" change="selectionChanged(event)" alternatingItemColors="[0x000000, 0xFFFFFF]" dataProvider="{alResults}" itemRenderer="itemRenders.Results" width="100%"></s:List>
[code].....
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Dec 21, 2010
what I need to do is combine 5 arrays with 5 individual strings (which have come from a JSON webservice) into one single list item in FlashBuilder Burrito. [code]I've pulled these out successfully and each one traces in the debugger, although as I need them all in the same list I'm struggling to establish them as a dataprovider together.If I push the strings and arrays together it is impossible to read properly, as the main Titles are at a different level to any descriptors for the products which are in the arrays.
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Jul 10, 2011
I have a component that contains a list that implements a custom renderer. I use this component as a tooltip, keeping one in memory and just altering the databindings as necessary.
Something like this where TTComponent is a class that extends Canvas:
<s:TTComponent>
<s:BorderContainer>
<s:List id='lstItems' dataProvider="{data.Items}" width="50%" borderVisible="false" contentBackgroundColor="#222222">
[Code]....
Now, what happens is when data containing many items is set to tt.data, the list resizes itself larger and displays fine. However, after this, if data containing few items is set to tt.data, the component momentarily displays larger than it needs to be, then resizes itself smaller.
What I'd like to do is have the component resize itself before it displays, so I don't see the resize on screen.
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Jun 30, 2011
I have a simple list and a background refresh protocol.When the list is scrolled down, the refresh scrolls it back to the top. I want to stop this.I have tried catching the COLLECTION_CHANGE event and validateNow(); // try to get the component to reset to the new datalist.ensureIndexIsVisible(previousIndex); // actually, I search for the previous data id in the IList, but that's not importantThis fails because the list resets itself after the change).I hate to use a Timer, ENTER_FRAME, or callLater(), but I cannot seem to figure out a way.The only other alternatives I can see is sub-classing the List so it can catch the dataProviderChanged event the DataGroup in the skin is throwing.
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Oct 4, 2011
I've got a spark ListForm with a custom mxml itemRenderer,all the itemRenderer has is[code]...
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Jun 28, 2010
I'm creating a list of scores for a game. now most of the list i need to have the same ItemRenderer. but in one specific row of the list where the user who's playing is listed, it should show different information and with different background color. how can i achieve this ?
I already tried to resolve the issue with states, i created 2 states, one state called 'mine' and the 2nd state called 'others'.
the problems that i got is that when users click on one of the list rows that state changes to i donno clicked or something and that's why i assumed that states are not the right action for me.
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Mar 22, 2011
I have a List class with an itemrenderer. How can I get the itemrenderers to divide the List width between them? Normally, I would think this would be a easy as giving the renderers a percent width but that no worky.
Application:
<?xml version="1.0" encoding="utf-8"?>
<s:Application
minHeight="600"[code]..............
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Jun 9, 2009
Basically I want to override some function in the flex/actionscript list class which creates a new ItemRenderer and passes it the required data ready to be displayed. I need to do this because I wish to show a different renderer based on the type of data being displayed. Is there such a function?
I don't really want to pass the list a single itemRenderer which calls its addChild function depending on the type of data it has - It just doesn't seem right.
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Jul 1, 2011
I have a renderer that looks like this:
[Code]...
Loading thumbnails using this method works perfectly. The issue happens when you scroll the List.
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Dec 26, 2010
I have two dataProvider's for one DropDownList. The following code can be compiled and run.
<?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].....
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May 26, 2011
Flex 3 List control had a itemRollOver event. Flex 4 List doesn't have it. Is there an equivalent or a workaround for this issue?
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Jun 28, 2010
I'm trying to animate a list as I delete the top row. All the examples I can find use itemsChangeEffect to bind to the effect, but this property exists only in MX lists, not spark lists.
Any idea how I can get the same effect done in Spark Lists?
I'm trying to remove the top most item in the list with a slight fade out effect before the rest of the items move up to replace the gap.
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May 25, 2010
I'm using a List which I need to be empty at the start. I'm adding items to it as needed by clicking a button. Since it's empty, I haven't added a dataProvider property
<s:List id="thelist" itemRenderer="listIR" />
To add an item, I'm adding it to the dataProvider directly
thelist.dataProvider.addItem()
but when I do that, it gives me this error
#1009: Cannot access a property or method of a null object reference.
Also I have a debugging Alert in the listIR itemRenderer itself and I see that when the list is created, I get that alert twice as if 2 itemRenderers were created, even though the list is supposed to be empty at the start.
How do I start with an empty dataProvider and add items smoothly to it?
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Feb 3, 2011
Is there a way so that every time the list is changed (data add, data deleted, etc.), the list will re-update or "refresh?"
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Jan 27, 2012
I have some xml, I want to give it to a List dataprovider, but based on an attribute match.
My Xml
<components>
<rows name="general">
<objects name="Start" image16="startflag16" image32="startflag32" class="someclass">
[Code].....
And I am trying to do something like below, If I remove (@name=="general") from below line it gives me all property
listView.dataProvider=list_components.rows(@name=="general").objects.property;
But it gives me error, so basically I want to get all property based on rows attribute name matching general
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Feb 21, 2012
I have this error. I am very very new to the Flex world. I have this function which returns an ArrayList.
public function createDataProvider():ArrayList {
....
return new ArrayList(imgArray);
}
Later, I use it here:
<s:List id="pubmapList" dragEnabled="false" dropEnabled="false" dragMoveEnabled="false" dataProvider="{createDataProvider}">
Here, I got an error saying: implicit coercion of a value of type to an unrelated type mx.collections.ilist. I thought the IList implementation includes ArrayList.
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Jan 2, 2011
I have a Spark List container whose dataProvider is bound to a result set coming back from a RemoteObject call. Pretty standard stuff.
<s:List id="list" dataProvider="{model.stuff}" width="100%" height="100%"
selectedIndex="@{selectedSlider.value}"
itemRenderer="{stuffRenderer}">
</s:List>
The selectedIndex is associated with an HSlider, but that is not the problem. My issue is that I would like to automatically select a certain "preferred" element from the list (only initially...to guide the user).
I tried to do that in a creationComplete event but my data hadn't shown up yet...setting selectedIndex didn't work..
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Aug 25, 2011
I have a Spark List with a data provider consisting of a list of filled out form applications. What is the best way to add a button to each List Item (form application)? This button will be named Open and will navigate to the specified form application.
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Mar 31, 2010
How to enumerate items of Spark List component after setting dataProvider property?
I mean accessing them as DisplayObject instances.
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Apr 29, 2010
I have a spark list, which is based on a dataProvider. As the application runs, the data in the dataprovider can change, and also the dataProvider can be swapped for a different one
What I need to do is make sure that something is always selected in the list (unless it is empty)
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Jun 25, 2010
I have two spark lists and want to drag items from one list to the other. When im dragging an item and over the other list item, i want the target item to change the background coloer.Basically instead of showing the black line indicating that I will drop between elements, I want to see the target item highlight.
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Aug 2, 2010
How to skin spark List component so that every adjacent itemRenderer has different color (something like mx DataGrid)?
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Nov 29, 2010
How do I wordwrap in a spark list w/ an itemrenderer? This posting at[URL] works 100% but when I try to set a separate item renderer, I can't get the word wrapping...instead, I get an ugly horizontal scroll bar. HEre is my mxml:
[Code].....
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Mar 7, 2011
I would like to add custom right clicks to a number of spark list controls. I have tried the following as an item renderer. (as per the flex 4 cook book). Full Render code here [URL] When I right click on the Spark List I simply get the Adobe Default Context menu. This is the same default behaviour I had before I added any code to this.
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Aug 22, 2011
I'm building a mobile app, using spark list control. When user tap on a list item, i want it to navigate to that correspondence page
<s:List id="list" width="100%" height="100%" labelField=" label">
<s:dataProvider>
<s:ArrayList>
[Code].....
how do i code it so that when user tap on item label="Page One" it will navigate to PageOneView.mxml and if it tap on "Page Two" it will go to PageTwoView.mxml and so on.
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Nov 4, 2011
I'm trying to populate a spark list component from SQLite in an AIR application statusList = new ArrayCollection(statement.getResult().data); myList.dataprovider = statusList; From the debug session I know the data is structured as statusList->unnamed object->array
[Code]...
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Jan 26, 2005
statusList = new ArrayCollection(statement.getResult().data);yList.dataprovider = statusList;From the debug session I know the data is structured as statusList->unnamed object->array
<s:List width="100%" height="100%" id="listUploadStatus" dataProvider="{statusList}">
<s:itemRenderer>
<fx:Component>
[code].....
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