Flash :: Flex - ArrayCollection - Adding And Removing A FilterFunction?
Jun 13, 2011
I am using Adobe Flash Builder 4 Premium. I have a mx:DataGrid and a s:TextInput, and I am trying to set up a search box that filters the DataGrid on each key press.his page shows a nearly perfect example of what I'm trying to do, except that I'm setting this up in a s:TitleWindow, which is brought up as a popup using the PopUpManager. The list I'm trying to filter can be very large. It is a list of usernames, fetched from a MySQL database via PHP. Since it can be so large, I want the list to be populated once in the main application and then referenced in the popup window so that it doesn't have to fetch all the usernames each time the user opens the popup.I have all of this working fine for the first time you bring up the popup, but if you close it and bring it up again, I get this runtime error:I also get this error if I attempt to set the filterFunction back to null just before closing the popup.See sample code below:
Main Application:
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
[code]......
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May 24, 2011
I want to iterate over an ArrayCollection in Flex while there can be items added and removed.
Since i didn't find a way to use a "classic" Iterator like in Java, which would do the job. I tried the Cursor. But it doesn't really work the way i want it to be ;) So how do I do it nicely ?
var cursor:IViewCursor = workingStack.createCursor();
while (!cursor.afterLast)
{
[Code]....
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Apr 24, 2011
My Dataprovider for a grid is an arrayCollection which is dynamically loaded with Objects . for example : a person object with persionID,PersonName ..etc . I applied a filter function on my dataprovider based on personID . below is my function
public function FilterFunc(item:Object):Boolean
{
var same:Boolean=String(item.personID ) == filterpersonID ;
return same;
[Code]....
this function is called whenever a new object is being added to the arraycollection . The problem now is dp.length in the above function is returning only the no of objects of the particular personID on which the filterFunction was applied instead of the absolute value . Its not limiting the size of the other objects which are runnning into thousand's causing memory issues . once i change the filterFunction to different personID , it slowly starts limiting the respective personID objects. So the sizeHandler() limits only the personID objects for which filterfunction was applied instead of the whole objects , this is the problem .
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May 23, 2011
I have seen numerous examples on how to remove duplicates in ArrayCollection but I can't seem to transpose this to XMLList. In most ArrayCollection examples, the example compares the key of the array with hasOwnProperty method and return a bool. That's fine, but what would I compare to when using an XMLList? Let's say I have:
[Code]....
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Aug 3, 2009
After applying a numeric sort to my dataprovider(Array Collection), I can not reorder the items via a tilelist. Do I need to remove the sort from the arrayCollection. If so, is it just a case of setting collection.sort = null ?
var sortField:SortField=new SortField();
sortField.name="order";
sortField.numeric=true;
var sort:Sort=new Sort();
sort.fields=[sortField];
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May 18, 2011
I have an arrayCollection with the following structure:
[Code]...
the AC is defined as follows:[Bindable] private var projectErrorsAC:ArrayCollection = new ArrayCollection;
I'm using this AC in a repeater to display each error. After each error is shown, I've placed an "Accept" and "Deny" button. Once the user clicks either one of these buttons, I'd like to call a function that removes the particular error from the AC. Here's what I have so far:
[Code]...
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Mar 17, 2011
How to filter an Arraycollection by "array of values" rather than a single value (simple comparision) , the below code snippet is for filtering by single value now I went into scenario like filter out only price [10,4,1,8] (some random values from the master collection). Is there any better way to do the second code snippet
[Code]...
One point I haven't mentioned is my items in the filterBy array are custom data not the basic datatypes.
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Nov 14, 2011
I am using a service that returns JSON (geonames.org) and I'm putting the result in an array and dumping it to a datagrid. Now that works fine for one city like this [URL].. However, I want to call this service multiple times with different city names, so I created an XML list ad figured I would iterate over the city list and get the results.
My question is how do I do this such that 1) all the lists are combined into one arraycollection and 2) this seems like I will have to chain the calls and wait for results which may or may not come back, so I thought I would ask the group about the best practice, and or resources to read and examples to build from.
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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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Dec 5, 2011
I have an ArrayCollection that is the dataProvider for a spark.components.List, which has allowMultipleSelection="true". There is a "Remove Selected Items" button which initiates the removal of all the selected items from the ArrayCollection upon being clicked.
I currently use the following method:
myList.selectedIndices.sort(ascendingSort);
// remove items, counting backwards
for (var i:uint = myList.selectedIndices.length; i > 0; i--) {
myArrayCollection.removeItemAt(myList.selectedIndices[i-1]);
}
where ascendingSort does what you expect ;). It works fine, and I know that it will always work.
However, I did take note that if I neglected the sort altogether, to my surprise the removal still worked. The reason for this turned out to be that, when the removeItemAt is called, the selectedIndices are correspondingly updated.
So my question is: Can one rely upon a removeItemAt call updating the values in the selectedIndices? or might that turn out to be different between runtimes and/or Flex SDK versions?
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Mar 23, 2012
The portal in my game is suppose to be unlocked after you collect all the coins. The portal is locked but when I go over a coin it neither adds to the variable or removes the movie clip by instance name of coin1 coin2 and coin 3.also if the remove movie clip doesnt need _root I've already tried it without it I know that is not the problem.
var openportal = 0;
function moveStuff() {
//-Very long code that is working. [code]..........
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May 29, 2009
I am having issues with this method. It's supposed to loop through stage elements (news feed) and check if the item is checked/enabled. If they are, it should add them into an array ratingAC, which will keep track of the number of elements that are rated, and the rating total. The problem I am having is that only one item is added to the total even if multiple are selected.
Archive Vars......
[Bindable]
public var newsDB:ArrayCollection = mx.core.Application.application.newsDB as ArrayCollection;
[Code]....
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Dec 2, 2010
is there any way to use ArrayCollection (from mx.collections.*) in Flash CS3/4/5? How?
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Jun 8, 2010
For example i have an ArrayCollection, and i want to find persons with telephone begines with "944" how can i do this?
[Code]....
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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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Aug 21, 2009
filterFunction is a method to apply a filter on the content of a collection.But the filter is not apply into the orginal Array (the one which use in the ArrayCollection) So, after apply a filterFunction, the original Array lenght doesn't change, neither the content because the Array is not update; Only the Arraycollection does changes after filterFunction method.is there anyway to synchronise the content of an arraycollection with an array ?
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May 20, 2008
I have a list of buttons that each load an external SWF when pressed. When a button is pressed, the SWF loads into a movieclip on the main timeline, and the list dissappears (so only one is loaded at a time). The main timeline moves to a frame with a back button. When the back button is pressed, I'm trying to remove the loaded SWF and make the menu visible again to load another SWF.This all works, but when I get back to the menu and try to load a new SWF, I get the error:TypeError: Error #1009: Cannot access a property or method of a null object reference.at CrystalBall/PL_LOADING()rystalBall being the first SWF I tried to load. The error fires like, four or five times too. I know it has something to do with the code trying to remove the loader before it loads it again, but I'm not sure how to fix it
Code:
package {
import flash.display.*;
[code].....
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Jun 30, 2009
I am pretty new to actionscript 3. I want to remove the movieclip on the stage and add a new movieclip but the button is within the currently running movieclip that I want removed. I am trying this function
homeArtist_btn.addEventListener(MouseEvent.CLICK, newArtist);
function newArtist(e:MouseEvent):void{ removeChild(homeAni_mc); addChild(artistAni_mc);}
I get these errors
[code]........
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Dec 16, 2011
the problem occurs when I remove the button, the button has been exported for actionscript, when I remove the button to change the page/page layout, when I return to the page, the button remains in its "over" state.so im wondering if there is a way to reset it either before its removed or when its added.I cannot use gotoAndStop(1);because I am working in a package file.
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Feb 23, 2011
I have a bunch of movieclips called firstNameBtn_mc, lastNameBtn_mc and many others. I also have a bunch of movieclips whose names start with the same but instead of "Btn" they have "Arrow", like firstNameArrow_mc, lastNameArrow_mc etc.
What I want is when I click on firstNameBtn_mc it does somthing to firstNameArrow_mc, but there are so many buttons I would like to do it in the following way.
1. get the movie clip's name...something with e.currentTarget.name for example
2. remove the Btn_mc part
3. add the Arrow_mc part
4. do something to the movieclip of that name
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Feb 22, 2012
I'm making a banner rotator that reads image urls from an xml file and adds them to a sprite on the stage, then tweens them into position. Here's the relevant code:
[CODE]....
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Jul 1, 2010
I'm trying to do something that I'm not sure if it's possible. I have to add or remove multiple listeners that will trigger the same three methods (onComplete, onError and showProgress). I was trying to do something like this:
[Code]...
Is there anyway to solve this? It seems that after passing through the addListeners method, the loader instance gets lost.
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Mar 15, 2012
So basically I've got a MovieClip called Jug and when the egg is clicked and dragged to the Jug I want it to disappear and then re-add itself in the place it first started. Aswell as this I want a variable to be added by 1 in value. I have tried fiddling around with this for a while now and I can't figure it out since when I remove child it gets errors. Here's the code:
[Code]....
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Nov 9, 2009
I have 4 separate photogalleries, they are all swfs called by buttons with UI loaders attached. The problem is when one is called the loader remains on the stage I need to be able to remove any loader on stage BEFORE calling another page weather its a photogallery or not.Easiest explanation is how I used to do it in AS2 example 2 btns /2 load separate swfs into level1 on each btn I would have
unLoadMovie(1)
LoadMovie (xxx.swf) 1
I need to do the same thing in AS3 Also, do I need to use separate loaders or can I use one loader and instance names? Below is the code I have now (btns are in two areas)
main timeline btns (all btns except photogallaries)
stop();
home_btn.addEventListener(MouseEvent.CLICK, onHomeClick);
[code]....
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Mar 8, 2011
I have a MC called Enemy. It contains a monster that pops out at a random time (a timer with animation inside the MC). It stays on the stage for a few seconds and then hides again. If it hides, I want it to be removed and another enemy be added instead. All the monsters are instances of Enemy MC that are inside enemies[] array.[code]
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Apr 21, 2011
ive made a flash website containing 5 pages all accessed via flash buttonson one of the page ive tried loading a external swf file and then added event listeners to each of the buttons so when a new page is selected the swf file doesnt continue to play in the background on the other pagesthis works, however when i then try to change page again this error is displayed:ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.at flash.display:isplayObjectContainer/removeChild()atValleyViewingWebsite_fla::MainTimeline/btnClick()below is the code im using:
var Xpos:Number = 110;
var Ypos:Number = 170;
var swf:MovieClip;
[code].....
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Aug 24, 2011
I am creating a game and want to reward the player at the end of a level by playing an animation. I have created a timer to add the animation to the stage but cannot figure out how to remove the animation once the timer has completed counting. I am sure you wise scripters out there know the secrete to this mystery.
[Code]....
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Mar 3, 2012
I've spent hours, and for all my self taught newbie-ness, I can't crack this: I have a navigation panel with several buttons. Lets call it mainNav. The mainNav buttons each add to the stage their corresponding MCs. They also remove any MCs from previous buttons currently on the stage. This is done by creating the MCs as variables, pushing those variables into an Array, and, when the mainNav button is pressed, calling the following function to remove the old (provided with assistance of the nice folks here), and then addChild(correspondingChild)
[Code]....
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May 21, 2009
I want to make a button with the function, adding and removing display objects. I have a button named solutions. I wrote the basic code for adding the external swf file and test the movie. When I click the button at first time, it loads the external swf file. However, when I click the button at 2nd time, it runs the external swf file again. I can't figure out how to write the code to tell the button not to load the file again when the file is already loaded.
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Mar 7, 2006
I thought i'd start this thread to uncover peoples habits and practices when it comes to the simple operation of adding and removing elements on stage. I ask because there are so many alternatives, and I keep wondering what might be the best/most eficcient way of doing it. Let me explain by giving an example:
Your user has chosen to click that flashing button that says "Sign up for our mailing list" and you need to prompt the user for a valid e-mail address by presenting him/her with an alert box on top of everything else. Do you.[code]....
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