Flex :: Custom Component Not Updating Display List?
Jul 12, 2011
I've created a component which is basically a meter (extends skinnable container). The skin to the component contains two rectangles (background and the actual meter). This component receives an arraycollection with the following fields value, max and min(the arraycollection I am passing is Bindable). When I initialize and pass the data to be used to draw It works great (keep in mind - only works the first time). I've created a button that changes the data array and shows the current meter value. Apparently the meter's value is changing everytime I modify the ArrayCollection I've set to be used for rendering.(dont want to say "dataProvider" because it is not a Flex dataprovider, just a variable )... here is the code...
public class meter extends SkinnableContainer {
[SkinPart( required = "true" )]
public var meter:spark.primitives.Rect;
[Code]....
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Nov 11, 2010
I'm building a top view 2D map, that it's objects are stored on the server.The kind of objects are 10 and might be a photo, label, button, lists, mix of them or labels with tooltips.The component must request the "areas" that are missing on screen.An area is 1000x1000 px and is cached in flex.To move in the map, will be like in google maps (drag-and-drop).I should be able to have another list and move objects from one to another using drag-an-drop on objects. Ex.: I grab an objects from a list and I move it on this map, I release the mouse button and the item is placed there.Now the problem is: I build a custom component for this trying to emulate the item renderer for performance and recyclage, implement drag-and-drop on objects and request the areas that are missing?
or
I extend the List component from spark and I add some features as multiple kind of itemrenderers and use recycle on them. Of course it must be able to request the missing areas on the screen and cache it's data.Maybe create a custom layout is needed too.What I need is something that must be really fluid, so the lighter this component is, the better.
UPDATE: *There will be not any object over another.
*I will not use hitTest on bitmaps because all bitmaps are wrapped in another component,as they,for now are itemrenderers.
Anyway I already begin to do this using a class that extends the SkinnableDataContainer and a custom layout. As the layout is not like a grid, is sparse, random items at diferent points(x, y).How to get the localX and localY, relative to item renderer and not to the Spark List, from a DragEvent in Flex 4?
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Jan 10, 2011
I'm trying to extend the mx:Box container so that two buttons sit on the outside of the container to cycle through it's contents (similar to a scrollbar).
I've made a custom component that looks basically
like "mx:HBox->mx:Button mx:Box mx:Button" where the buttons and box are children of the hbox.
How do I offer the user access to the box (say its dataProvider and itemRenderer) through my custom component?
So they just need to write 'local:MyCustomComponent dataProvider="rar" itemRenderer="rar"/>' and my box inside that component can use it?
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Sep 6, 2011
I created a custom MXML component, TurboContent, that extends the NavigatorContent class:
<s:NavigatorContent xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx">
[Code].....
In this case, the 'myButton' component never shows up, but all the elements of the base component do (3 buttons and a datagrid).
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Sep 29, 2010
Is there a way display the display list in the Tree component. I could parse the display list into xml but then I would not be able to create a reference to the display object.
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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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May 29, 2009
I used a FlexBuilder Library Project to create a custom component library (swc). The custom component is a control bar with text fields and buttons, etc.The vast majority of our team's code is done in pure AS3 I've successfully included my new SWC in the lib and build path in our AS3 project.I've also successfully instatiated an instance of my custom component, but for some reason, it will not display. I know it exists, because 1) the compiler had no complaints, and 2) I can trace property values of the custom component and get valid output from the trace statement.
trainer.games.board.MatchThree {
import flash.display.Sprite;
public class Test extends Sprite{
[code].....
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Jul 21, 2009
Here is part of my code in short:
[Code]....
I realized that if I do addChild, I can't really see the dynamically added component, since flex did not reserve space for my List to display. So I do parentDocument.addChild, and then it appears no problem. My question is since it's being added in the parentDocument, so it is suppose to be a component belong to parentDocument, so is that component still be able to call this handleMouseDown? From my experience, it's still able to, but which doesn't make sense to me. Can someone explain a little about why it can still work, or any better approach other than parentDocument.addChild
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Apr 4, 2011
I have a Spark.List with several items ("folders") each containing an ArrayList of files inside, when I select one of these "folders" it should display the list of "files" on another Spark.List. Its working right now by doing this:
private function onFolderChange (event:*):void {
var list:List = event.currentTarget as List;
if (list.selectedIndex != -1) {
currentFolder = null;
currentFolder = list.selectedItem;
fileListDataProvider = currentFolder.files;
fileList.selectedIndex = -1;
}}
The problem is that when the "file" thumbnails cover more then the List viewport and a scroll is needed sometimes by changing from a "folder" to another "folder" the file List loses files. For example lets say there is a "Folder 1" with 30 "files" in it (10 visible and 20 hidden by the scroller) and "Folder 2" has 5 "files" (all visible), if I switch back and forth between "folders" sometimes it will display everything right. Sometimes it will display a scroll on "Folder 2" when there is no need and sometimes it will only display a few (5 or 10) "files" in "Folder 1" even though it has 30. Something is wrong with the fileList, its updating its items but not really updating well. I've tried setting the itemRenderer to null and reapplying, setting the dataProvider to null and reapplying, doing validateNow().
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Oct 18, 2011
I am using several instances of the same custom component on the same SWF. The component is essentially just a textfield with special sizing requirements. I also have another "wrapper" component that deals with the info from the textfield components. I was initially planning on using the stage index to associate the data with the textfield component it came from. This became more complicated than I anticipated. When I trace from the wrapper i can't get the index of the textfield components. So I got it in the component code and sent it with the info to the wrapper via a custom event. The problem there is that i can't tell which component is which because they are indexed identically. I can also see the component shim as well as the textfield.I'm just really confused about how programmatic components work on the display list.
My main Question. Is there a better way to associate the info with the proper component? I guess that's my only question. Please point me in the right direction.
EDIT2: I created a dummy place-holder component that just draws a rectangle then at runtime replaces it with programmatically generated textfield component.
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Dec 1, 2010
I used a List Component in my flash, and now I have to display image in the List component instead just text.
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May 28, 2011
I'm resizing a chart and want to take a picture of it when all the children of that chart are done updating.
For example I'm drawing some stuff on the chart after the size changes. I've tried chaining a bunch of callLater() but I'm still running into problems on slow computers.
Raising an event when the last children has executed doesn't seem to work as it might take a while to draw (hence the callLaters).
Is there a best practice to find out when something is done updating?
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Nov 4, 2010
I am trying to create a custom progress bar which has common functionality implemented like twining and setting the total value etc.,Every thing seems to be working but for some reason, percentComplete is always 0 instead of increasing the value even when I call setProgress()[code]If you notice the trace, the value is incrementing, but the percentComplete is 0.
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Mar 2, 2012
This is NOT duplicate of my earlier post (its is slightly different)But this is similar issue with similar error but its not the same error The error I am getting now is below while dispatching the custom event from my custom component
TypeError: Error #1034: Type Coercion failed: cannot convert events::MapEvent@a74ab51 to flash.events.MouseEvent.
dispatchEvent(new MapEvent(MapEvent.CLICKED_ON_MAP));
Note: The error in my earlier post is giving below error message
Type Coercion failed: cannot convert flash.events::Event@81ecb79 to com.events.ShopEvent
The difference here are two things, the earlier error is while converting flash event to custom event and now this one is while converting custom event to flash event and secondly, I have no clue why it is trying to convert to the mouseevent where I am just dispatching my custom event with proper listeners.
This is my custome event
package events
{
import flash.events.Event;
import ui.map.MapElement;
[code]...
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Jan 13, 2009
I am overlooking something, but why won't my FLVPlayback component, which is in my library, be added to the display list? When the code executes, there is now FLV component on stage.[code]...
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Jun 25, 2011
"MyImage.as" File[code]...
i m having the blank white screen.. i new in flex & actionscript..
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Jul 7, 2011
I am trying to read a XML file and display its content in a simple list component or at the console. The problem is that the event listener is triggered in an infinite loop.
The code:
var myXML:XML;
var myLoader:URLLoader = new URLLoader();
myLoader.addEventListener(Event.COMPLETE, processXML);
[Code].....
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Mar 23, 2010
I've just imported a Flex component into my project.I have a theory question about importing.all the imports statements in the component source files started with "com.subFolder.etc", but I have preferred to move the component folders into "componentName" and to replace all import statements as "componentName.com.subFolder.etc"
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Dec 11, 2010
In the main file, I would write[code]...
But if I want the component to have that behaviour innately, where do I write it in the mybutton mxml file to have it reference itself?[code]...
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Jun 28, 2011
How do I identify all the display objects in the display list in ActionScript, bellow the one that I have clicked? All the other objects are shadowed by the first one. What if other objects have visible parameter as hidden?
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Sep 8, 2011
I have a custom Flex 4.5 component (to be used in a List) -
Game.mxml (represents a clickable playing table in a card game):
<?xml version="1.0" encoding="utf-8"?>
<s:ItemRenderer [code].......
But I never see the "game clicked: " trace. Does anybody please know why? I'm probably missing something minor, because I can see the "Clicked: 8946" trace.
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Feb 16, 2012
This is similar to the question asked here. I am dispatching custom event "ShopEvent" but i am getting error "Type Coercion failed: cannot convert flash.events::Event@81ecb79 to com.events.ShopEvent"Note: Error is thrown from the parent custom component (3rd code snippet), I have added more details thereThis is my custom event. See the first constant, I copy pasted the event name in custom components.
package com.events
{
import flash.events.Event;
[code]......
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May 12, 2010
The spark panel component for example can be written like this
<Panel title="Skinny">
<child components ... />
<controlBarGroup>
<child control bar components ... />
</controlBarGroup>
[Code]...
The motivation here is that I can now create a couple different skin files to change the look and layout of those subgroups. Reading source of the spark panel, there are some calls within the mx_internal namespace such as getMXMLContent() which is a method of the spark group component, but which I have no access to.
Does the description above make sense? How can I create custom 'contentGroups' in my custom Flex4 component that can use nested mxml child components? Should I approach this a different way?
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Jun 29, 2009
how to populate a list box component located within a seperate mc in my swf with an array... the array comes from a response from a webservice call. I am not currently on the computer with my source code available so lets just use the following....
listdata[i] = the array i want to populate the list box with..... (listdata1, listdata2, listdata3, listdata4, etc. etc.)
movieclip1 = the MC within my fla containing the list box component
mylist = the actual list component
... just not all that familiar with the format of actionscript when working with objects... using CS3 and as2 btw,
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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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Apr 12, 2012
Is it possible to set custom color for rows in a flex list depending on the data in it.I know how to define a custom itemrenderer and do it but I would likr to know whether there is any simple method because I don't want more components in the list
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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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Mar 18, 2010
I want to create a custom list in Flex for an interface prototype. The list is supposed to have an image and 3 text fields. This is what I have done so far, the control displayed is what I want. But, when I click on one of the items, the item does not appear (visually) to be selected. I was not sure how I would implement this.
Here is my code so far:
<s:List width="400" height="220"
dataProvider="{arrColl}"
alternatingItemColors="[#EEEEEE, white]">
<s:itemRenderer>
[Code].....
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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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Dec 26, 2009
How can I validate if atleast one item has been selected from a list, such that the selectedIndices is set to NULL at the init() of application?
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