Flex :: Create A Custom List Item Renderer With Image(base64 Png String) At Runtime?
Mar 28, 2011
I'm trying to create a list with icons. There're a lot of examples but seems all of them are using embedded images.My problem is how can I create the list with icon from base64 png string at runtime?
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May 20, 2011
I have found something good here. [URL]..The mouseover effect on the list item is good. Any ideas to make this look.. I can infer that this is happening on mouseover of the Image Component. I think this is similar to google image search preview of images. If anyone have come across a component similar to this kindly share it to me and to all.
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Jun 10, 2011
I'm creating a mobile app in which I need to show a calendar with months at the top. The months are part of a component that extends from SkinnableDataContainer (and has some custom scrolling/behaviour - which is why I did'nt use a spark list). I need the months to be shown as a 'trapezium' shaped tab and so I'm using a png image as a mask in the item renderer for the component.
When the mask is not applied, it all works well - the months render, the list/data container selection works when I click on a month and so on.When the mask is applied, it renders well, scrolling and everything else seems to work well - but when I click on a month, nothing happens visually. And from the trace statements in my code, it appears list item selection is not changing. Looks like mouse clicks are not working.
Code:
public class TopCalendarMonthRenderer extends LabelItemRenderer {
[Embed(source="/assets/trapezium_alpha.png")]
private static var TrapeziumMask:Class;
private static var trapeziumMaskInstance:BitmapAsset;
[code]...
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Mar 4, 2011
<mx:itemRenderer>
<mx:Component>
<mx:Canvas>
[code]......
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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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Oct 17, 2010
Anyone know how to change a single instance of an item renderer for a Flex tree item at runtime? To reiterate, I'm not trying to change the entire tree's item renderer like this:tree.itemRenderer = new ClassFactory(ItemRenderer2);I'm trying to change the item renderer of a single tree item like this (the following code does not work):tree.selectedItem.itemRenderer = new ClassFactory(ItemRenderer2);To put it more simply, does anyone know how to reference an instance of an item renderer and set it to a new item renderer class? I've tried using the Tree's itemToItemRenderer() method with no success.
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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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Oct 26, 2010
I have a Flex Spark List (well it's a Tree to be precise but it renders as a list) and as I'm scrolling through it I want to provide information about the item that is currently at the top of the list in context to the viewport. So this could be the 100th item in the list depending on how far you've scrolled down.
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Jun 27, 2010
I need to implement a custom cell renderer in a project of mine, I have done some search on google but couldn't find what I need, I need each cell in the tilelist to display 2 icons with couple of labels, I need a good example to start it. If possible I need a way to design the template as a movieclip and pass it to the tilelist for rendering the cells.
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Jul 25, 2009
I have made the following item renderer in mxml, but when I use it in a list for some reason I can not select it. Am I doing something wrong?
<mx:HBox xmlns:mx="http://www.adobe.com/2006/mxml"
horizontalScrollPolicy="off">
<mx:Script>
[code]......
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Jun 17, 2010
I have a Renderer:
<?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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Jan 20, 2010
We have a requirement to show a list of appointment slots. So every hour of a schedule has a set of 10 min slots. The requirement is that if we click on a arrow button at the 8:00, 9:00 hour slot, the layout of the hour slots should change from a vertical list to a horizontal list.For this we modeled the system as follows:ScheduleComponent ->(contains) -> List (Hours of schedule)The HourViewComponent is an Item Renderer, that displays the 10 mins slots based on the available appointments by using a Slots List (list of slots in the 8:00 hour). For the Slots List we have a Slot View Component as an Item Renderer.Now the issue is that when we click on the 8:00 slot we are able to change the HourViewSlot from a VerticalState to a Horizontal state. But The container height is not collapsing in the minimized state. It occupies the same size as the vertical layout! We tried using variableRowHeight attribute.
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Apr 26, 2010
I am using a List with an ArrayCollection as a DataProvider. The list uses ComboBox as Item Renderer itemRenderer="mx.controls.CheckBox"I would like to bind the values in the List.You have a list with several comboboxes, and those values are loaded dynamically from an ArrayCollection.The ArrayCollection contains Objects with a boolean property for which I should bind the True/False values selected in the comboboxes.
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Oct 14, 2010
I have created a custom item renderer for the tree, i have added some children in create children function, my problem is that sometimes i need to show these children and sometimes i don't, depending on clicking on a button which also i have added at create children, the problem is that i had to create the item even if i don't want it to be visible, and removed it by making visible false, and this costs a lot of memory, i have tried to create it at buttons click listener but when scrolling the child disappears, and it may appear again if i keep scrolling up and down.. i am trying to add the child just when i need it to be visible, is this possible or i have to create it on child creation method?
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Feb 23, 2011
we have developed a web application by using flex-blazeDS-Java. Now we got a requirement that to print the user existed page whenever he clicks on Print button. I am able to print my flex componets and advanced datagrid but not able to print the custom item renderer images which are rendered in datagrid. And also how to print the multiple pages when I have large data in advanced datagrid.
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Dec 7, 2011
ow do you display HTML formatted text in a Spark custom item renderer (Actionscript)?
Sample Code:
The html content in item.post_content displays as plain text in the IconItemRenderer messageFunction snippet below (which is just the default generated code for Icon Item renderer):
<s:itemRenderer>
<fx:Component>
<s:IconItemRenderer iconField="iconField"
iconWidth="64" iconHeight="64" labelField="post_title" messageFunction="getPost">
[code]...
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Jun 7, 2011
I have a Spark list with a customItemRenderer that is taking a good 3 seconds to initialize with just 50 items.
I'm using Flex 4.5, my ItemRenderer is already very optimized, using as little nesting as possible, fxg and so on.
Is anyone having similar issues? I've tried almost everything in the book bar going back to mx.
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Oct 23, 2009
I have a custom item renderer that displays images:
<mx:DataGrid dataProvider="{friends.friend}" id="friendsGrid" width="240" rowCount="3" variableRowHeight="true" headerHeight="0"
horizontalCenter="true" backgroundAlpha="0" borderThickness="0"
[code].....
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Jun 6, 2011
create a custom itemrenderer in Flex, whether there is some way to access the components that you place within the itemrenderer using actionscript? For instance, if I create a custom itemrenderer like this one:
<mx:itemRenderer>
<fx:Component>
<s:Group id="ThumbnailContainer" width="75" height="75">
[code]...
Is there a way that I can access the "Group" container for each of the tiles that the program produces? So if I create a TileList, use the item renderer above, and have a dataprovider with 10 elements in it, is there a way that I can access or address the Group container for each of the 10 tiles that are created using actionscript?
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Jan 3, 2011
I'm trying to make a simple flash application providing interface for taking tests as a high school assignment. One of the requirements is to use an XML file as data source.Now, having a List component bound to the XML file with questions consisting of data such as question body, question type (ie. single choice, multiple choice, open, image etc.) and possible answers (where applicable), I was wondering if I could add some additional data (and what is the best possible way to do so) to each question upon its transfer to the List component.
I am trying to achieve two main goals with this: firstly, to mark the questions to which an answer has already been given, like with such code in ItemRenderer class:
<s:Label color="{data.color}" text="{data.label}"/>
Where data.color would be set whenever the user gives an answer to a question.
Secondly, while at it, I thought of such possibility as a great way to store answers given to particular questions. In this case, the Class of the answer object would have been Object, since there has to be many type of questions (where the answer could also be a Bitmap for example).
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Oct 21, 2010
How to make a custom item renderer in flex 4 without extending the ItemRenderer class?I need this because I want to use a custom class that is extended in all my components. as this item renderer for me is like a component, i would like to extend that custom class.[code]the ThumbView doesn't extend the ItemRenderer
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Aug 23, 2011
I have converted a jpg image to Base64 string and saved somewhere. Now How can i convert this Base64 encoded string to bitmapData in flash as2?
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Jun 2, 2011
I have a TileList with a custom item renderer.I need to change the children of the ItemRenderer when the dataprovider changes for the TileList.Currently,override protected function createChildren():void{Works fine with the inital data, but when the data changes to a different structure I need to recreate the children somehow.I image there has to be a way to listen to the TileList for a data change from inside the item renderer, but how? Or is that even the best route to go?
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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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Jan 11, 2011
I have a string of of base64-encoded PNG image that is suitable to use as a src (source) attribute in a <img> tag. However I need to transfer this image to Flash applet where I need to create (show) the image fast. Is there a way to simply use the data string and somehow create an image (inside a Flash movie) from it?
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Sep 8, 2010
I have a Datagroup with a custom item renderer the momment I bind it to XML from an http service it stops working.
[Code]...
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Jun 8, 2010
Creating a dynamic list and associating a picture with each list item. i need the list to be scrollable, and i want the list and it's associated picture to be displayed randomly when the application is re-launched. i.e it doesnt show the same list everytime.
I also what to be able to sort the displayed list items. e.g if the list items is about restaurants, i want users to be able to sort the displayed items by either; district, cusine type and gastro type.
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Nov 24, 2009
I'd like to have an overlay that draws lines between selected items in different Flex 4 List controls.
The problem is I can't figure out how to access the x, y coordinates of the list's item renderers.
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Jul 20, 2010
my renderer contains a canvas in it, i add some title-window, every time i see my tree previously added Title-Windows are visible, i want to access each n every item in tree and remove previosly added all windows from the rendere. how access all the item renderer in AS3 ?
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May 9, 2011
I have an mx:tree with with TreeItemRenderer as below.
Parent1 (Delete | Rename)
Child1
Child2
Parent2 (Delete | Rename)
Child3
Child4
Delete and Rename are link buttons
Now when i click Rename a popUp should be shown like
OldName : Parent1(Text Input showning present Name)
Enter New Name: Parent1NewName(Text Input for entering New name)
OK | CANCEL Buttons
Afetr Entering the new name,click OK,popup should be closed and need to get the value in the treeItemRenderer.
I have the logic to rename the Parent1 in TreeItemRenderer and also I m able to get the Parent1 in the popup OldName TextInput.But after entering the new name i m not able to get that new name in the TreeItemRenderer.
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