Flex :: List ItemRenderer Caching Items?
Jul 31, 2011
i am using an itemRenderer in mx:list, it has many text fields and combos, i use this item renderer to edit items in array collection, each item in the arrayCollection is of type Action which comes from BlazeDS remoting as a valueObject.my problem is when i add new item of type Action to the list dataProvider (ArrayCollection) by this code
myList.dataProvider.addItem(new Action());
the new item tooks the same data from its previous item.
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Aug 3, 2010
I have a Flex list and a custom ItemRenderer. I'd like to be able to have some items in the list use a different ItemRenderer (say, depending on the class of the item). Is this possible?
E.g.: <s:List dataProvider="{_systems}" itemRenderer="myItemRenderer"/>
Most items in _systems use myItemRenderer. But if element 3 of _systems is "specialSystem" the renderer would be "specialItemRenderer".
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Nov 8, 2010
I'm trying to set a specific list item in a mx combobox to have a custom item renderer, the problem is that I cannot do this via mxml, it needs to be done via actionscript at a later stage, eg: combobox gets created, combobox gets populated, user does other tasks, combobox needs to set one or more items in the combobox to have icons (via item renderer)..
I can do this via the onChange event, but it only applies the icon when the combobox is opened and there is a slight delay so you can see the icon being added.
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Dec 1, 2009
How to make list items as tool tips for combo box items?
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Mar 17, 2011
I have a XML structure like:
<Main>
<Category1>
<Data Name="Data1">
[code].....
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Aug 15, 2010
I'm creating a facebook application in flex. I'm actually working on the friends component that shows your friends who are using the application. now, each friend has a profile image.
I created the component using a s:List element.
In the Skin Class of the element i configured the requestedColumnCount to 3, which means it shows 3 friends. i added buttons to scroll left and right in the list.
Whenever I scroll to see a different friend, for a half of a second i see no image because the List component is loading the image in order to view it.
is there a way to make the list preload all the elements so i won't have this kind of problem ?
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Oct 20, 2009
I have a List and the item renderer displays an image. Whenever you scroll the list, and the item renderer refreshes, it redownloads the image. Causing there to always be a delay. Is there some way of caching it so it doesn't have to redownload every time causing a delay in showing the image every time you scroll the list?
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Aug 11, 2010
I'm using flex 4.1 to write an application. i read in the documents that has the rowCount property to set how many items to display. the does not have that property. how can I limit the list to display 3 items ?
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Dec 31, 2009
Here is a snip from within my code:
[Code]...
The 'recommendations' dataProvider is an ArrayCollection of String, which are generally sentences about as long as this one. By setting the variableRowHeight and wordWrap properties as shown, if a sentence is too long to fit on a single line, everything works fine- the row expands and the messages show on two lines, or occasionally three.
The space allocated for this panel within the entire canvas means if the total text size of 'recommendations' exceeds six lines, I need for the entire list scroll. This is also working just fine. The trouble is when using the mouse wheel to do the scrolling- Flex scrolls both the entire list and the single item where the mouse is hovering. Often this results in only the second half of a sentence being visible. Non-programmer friends I have asked to look at this noticed this, and tell me it as a problem. If a user does not notice the dual scrolling, and sees only a fragment of a sentence, it will be perceived as an error in the application.
[Code]....
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Sep 11, 2010
I have 2 Spark List with custom Item Renderers. I'm working on an application that enables users to grag these Item Renders from one List to the other. When one of these IR is dropped in a new position or in another List, I'm updating the dataproviders: remove the object from one list's dataprovider and adding it to other's dataprovider. This si working ok. The problem is that some times the IR is cached and it doesn't show the correct information, based on its data.
How can I force the lists to never cache IRs and all the times I modify the dataprovider, all item renders re-create all IRs (performance won't be an ossue since I have few items on each list)
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Jun 15, 2010
How to access List itemRenderer and its properties (Spark - Flex 4)?I want to iterate through list and do something like (note it's pseudo code):
for (var i=0;i<NUMBER_OF_ITEMS_IN_LIST; i++){
myList.getItemRenderer[i].property
}
[code].....
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Nov 23, 2009
while i using drag & drop from listbox1 to listbox2 ,how can i get all the items of listbox2 in flex
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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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Oct 22, 2010
When I change the: list.selectedItem.name = 'name2'
then in my item renderer
the dataChange event is not fired! and I can't update the label with the name property...
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Feb 11, 2011
I'm attempting to change the contentBackgroundColor of a List component depending on the content found within the dataprovider.[code]...
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Jun 22, 2011
I have a List with textInput as itemrenderer. Initially the list is loaded with data from a data provider. However since the items are rendered in textInputs, I have the ability to change the value of a particular item.
But when trying to access the value of the changed item using the function below, I still get the old value in my trace:
private function addItem(event:Event):void {
trace(myDataProvider.getItemAt(myList.selectedIndex).label);
}
what I need to do for the new value to be available. My itemrenderer is shown below:
<?xml version="1.0" encoding="utf-8"?>
<s:ItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
[Code].....
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Aug 2, 2011
Is there a direct way to get the item index of the data inside an itemRenderer? I need to display the item number against each item. I am currently doing a workaround and won't allow reuse of my itemRenderer component.
var index:int = model.dataColl.getItemIndex(data) + 1;
itemNo = index.toString();
This is what i am using now, it works, but the concepts of component reuse and data abstraction are compromised.
I am using Flex 3.
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Jul 23, 2009
I'm using a custom itemrenderer to display a list of photos and need to know how to control the width. At the moment it does this: Which, as I'm sure you'll agree, is eye-bleedingly ugly. The list is created like this:
[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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Nov 10, 2010
I have a list that uses a checkbox itemrenderer. The dataprovider is a collection of people. When I load the data from a file, each list item shows the person's name (last, first -- labelFunction), and the checkbox's selected property shows the person's included property. I.e.,Smith, Doug - [x]Williams, Bob - [ ]orris, Anne - [x]However, each person also has an active property. I want to disable the checkbox for people who are inactive (meaning, "you can't include inactive people").to do the same thing in a datagrid. However, none of them work and all the checkboxes are enabled regardless of the person's active status. Here is my basic code:
<mx:List id="peopleIncludedList"
dataProvider="{someProvider}"
labelFunction="peopleLabelFunction">
[code]....
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Apr 25, 2011
I need to create a slideshow using data received from another view.I'm calling the slideshow's view like this:
<s:List id = "list" dataProvider = "{actions}"
change = "navigator.pushView (DetailsProduct, list.selectedItem) ">
<s:itemRenderer>
[code].....
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Mar 1, 2012
I have the list shown below:
<s:List id="list2" width="100%" height="100%" dataProvider="{ recordingsShown }"
itemRenderer="components.VideoItemRenderer2"
selectedIndex="0" visible="false">
[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
<mx:List width="100%" dataProvider="{arr}"
itemRenderer="mx.controls.ProgressBar"/>
Now what I need is whenever currentValue field of Array "arr" changes i want to update the progressbar "progress" value to currentValue (where min and maximum value of progressbar are stored in Array "arr").
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Oct 29, 2010
I've wrote a custom itemrenderer for a List component (Flex 3.5) which is a VBox with a Label and a TextArea wrapped inside. All works fine so far but I want the TextArea in the first itemrenderer to receive focus so that it instantly becomes editable when tabbing onto the List. Is that possible and if how would I achieve this?
I've already added an event listener that selects the item at index 0 but the textArea in it should also be focussed at that moment _list.addEventListener(FocusEvent.FOCUS_IN, onListFocusIn);
private function onListFocusIn(e:FocusEvent):void
{
_list.selectedIndex = 0;
}
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Dec 29, 2010
I am using a spark list control with an itemrenderer. Whenever I set an itemrenderer's currentState, the moment I mouse out of the itemrenderer, it gets reset to its default state. How can I make an itemrenderer keep its currentState unless I explicitly tell it to change?
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Feb 9, 2011
I am having an issue with my ItemRenderer, which I am using for a spark List. My code is the following:
I have this list:
<s:List
id="productSetList"
dataProvider="{ model.productSets }"
[Code]....
The thing is, if I scroll the list, and click on an item, it does not trace 'arthur' ! Why is this so ? I must trace that all the time that someone clicks in the list!
EDIT: If I remove change="model.selectSet( productSetList )" in the list, it works!! but I cannot remove that, some suggestions ? How can I switch that to another function?
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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 22, 2011
I want to set the BorderColor of certain Item Renderers (textInput) of a List. By default all have a common border color, but I want for example when clicking in an item to have a red border. I tried this on a click event in my itemRenderer,
[Code]...
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Sep 22, 2011
I have a list inside a VDividedBox. When the box is resized so the vertical scrollbar shows on the list, it covers some of the itemrenderers. How do I get the list to resize horizontally so that the scrollbar does not cover the renderers?
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Sep 1, 2011
I have a main application that contains a list, using a custom itemRenderer to display data.
I would like to be able to call a function, inside the itemRenderer, from the main application.
When running the app, we have a list with three persons, and a button. I want to call the function myItemRendererFunction() inside the itemRenderer, of the selected item in the list, all this, from the main app.
[Code]...
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