so I need to know if there is a way to understand if an Object has listener added to it. I mean:
myObj.addEventListener(event.ENTER_FRAME, handler);
listenerList:Array(?) = myObj.function_I_need();
Just as a test, here's the entirety of my code:
[code]...
I never ADDED the corresponding event listener. Why doesn't Flash complain that I'm trying to remove something I never added?
I'll present my problem in a few steps:
- I have a constructor method which is trigerred automatically once the program starts
- The method's argument determines whether or not an enter frame event is to be added(move:Boolean = true)
- If true, add the event listener
- there are getters and setters created to access the variables from another class
The problem is that the event listener is run only once - at the initial phase, so it checks the move's value just once (true - add, false - don't add), so it can be turned on and off only in this class. I want to allow a user to change its value from an external class, which is impossible even with getters and setters, because it adds the listener before the user even gets a chance to change it. I want the listener to be added only if the user wants it to. I know it looks complicated,
My problem is basically as follows. There is an instance of a class extending EventDispatcher. Everything goes well when I add event listener to the object like this:
[Code]...
Now someFunction is not called even though the line containing dispatchEvent('eventName') is being executed just like before (and there is an external reference to myObject as well). The application I'm developing is quite complex so, unfortunately, I can't post the exact code.
I am wondering if there is a better way to add MOUSE_OVER/MOUSE_OUT listeners to a whole host of objects in my project.
The example is that I am loading in lots of thumbnails for a portfolio viewer. Each thumbnail is an instance of ThumbnailUI Class. Inside ThumbnailUI, I have added both MOUSE_OVER and MOUSE_OUT event listeners. This means that when all of the thumbnail instances are added, I have lots of listeners active at one time. Is this OK? Is there a better way to achieve mouse events on all of these thumbnails?
Hello I need to remove a ENETR.Frame listener to a frame on stage from a symbol.
View 13 RepliesI am trying to make an animation with three seperate buttons that when clicked on make one set of text disappear and new text appear in its place. My code so far looks like this:
stop();
//---Bio Button Text---\
go.addEventListener (MouseEvent.CLCIK, bioplay);
[Code].....
What is the correct event listener to detect a child added to the stage? I tried:
[Code]...
which doesn't work. I also tried ADDED_TO_STAGE but that doesn't fire it either. Do you know the correct way to detect when the child is added? Perhaps I should be attaching the listener to the parent instead?
I'm having trouble getting the Video class to work.. Everything works fine until I try to add an on enter frame event listener to the movie. I basically want to overlay an effect that gets updated every frame but adding the event listener causes the movie to freeze before it loads or on the first frame or just shortly after starting play back.. Check out the source code at [URL]
It freezes even if the enter frame method body is commented out so I don't think it's because of extra overhead..
I m using a dynamic text field in my app. I have added one Event.Change Listener on it. When I type into it with the keyboard, the event triggers. But when i set some text in it when user performs some action, like textfieldName.text = "test" then the event does not triggers. In this type of situation where we are not using keyboard, which listener should be added to text field to trigger the change event?
View 2 RepliesI've got MovieClips on the stage, both manually added, and added with code. I used this code to trace them all:
for(var i:int=0 ; i<stage.numChildren; i++) {
var myObject = stage.getChildAt(i);
trace(i);
trace(myObject);
}
All it returns is 0 and [object MainTimeline]. Is there something wrong with Flash, or did I do my coding wrong? The objects I put on the stage should be on the Display List, right?
I'm instantiating a group of RadioButton components into a Sprite and then later adding it to the display list. When the latter occurs, I can visibly see the font of the RadioButtons' labels changing from a serif to sansserif—but I have NO code to that effect anywhere. This occurs long after the components are actually instantiated, when they (via their parents) are added to the displaylist.
In Question_UI.answersContainer.answer:
answerUI = new RadioButton();
answerUI.group = rbg;
answerUI.label = text;
[Code]....
I've triple-checked the obvious, but there's NO code regarding the font of the label at all. It seems to only have to do with being added to the displaylist.
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]...
View 1 RepliesIs there any way that I can clear all of the previously added items within a List?
View 4 RepliesI have an object that is instantiated, then placed into a property within a singleton (single instance) object. When a button is clicked an event is dispatched carrying a payload that references the display object that is held within the Singleton. When the event is heard, my view object adds the object to the display list e.g. addChild().The Item shows. Now If I hit another button an event is dispatched, and a new item is added to the display list via the method above and is seen. The 1st object is removed from the display list Here is my problem. When I click the button to load the 1st Object the above process is executed again but the object does not show.
I can run trace statements from the object that is supposed to be visible and they run fine. I even do a check to see if the visible property is set to true, and it is, but not object is on my screen. Code for this process.
//custom event carries the name of the page aka display object. this is a string
dispatchEvent(new MenuEvent(MenuEvent.CHANGE_VIEW_STATE, event.payload));
//When the event is heard, the following condinial is run
[code].....
how do you dispose a class which doesnt get added to the display list?
instantiate:
Code:
var myClass:Class = new Class(parameters);
do you just say this?
dispose:
Code:
myClass = null;
how do we remove object( sprite which has an external swf as it's child ) from display and more importantly from memory yet we still can use the same variable to add another object (yes another sprite like the one we removed yet has different content).., "
i did tried the removeChildAt thing it did remove all the child from the display list but i still can hear sound from video running.
here is small scale code of what i'm doing (sorry that i can only give you chunk code of loading and adding)
// var SWFList:XMLList; //used to hold a list of all external swf source,atribute and etc// var totalSWF:int; //hold the total number of external swf there is to be loaded
// var swfLoader:Loader; //instance of loader class used to load the external swf
[Code]....
I have a Spark List (spark.components.List) backed by an ArrayCollection for its dataProvider. The List has a vertical scrollbar when there's too many rows to display. What I want is when a new row is added to the List for it to scroll to the bottom to show that new row.
I've tried calling List's ensureIndexIsVisible from a listener on the ArrayCollection. This doesn't work because the List hasn't yet fully rendered the new row. It will either scroll to the second from the last row, or throw the exception:
[Code]...
I have an (empty) ArrayCollection that I wrap with a ListCollectionView. Then I add a series of items to the ArrayCollection, but these are not showing up in the view.
public var transactions : ArrayCollection = new ArrayCollection();
public var filteredTransactions : ListCollectionView = new ListCollectionView(transactions);
transactions contains 150 items, filteredTransactions contains none. I originally thought it was the filter I was applying, but even when I remove the filter, I still get no items in the filtered list.
Do I need to add the items to the view as well as the underlying collection (this would seem to defeat the purpose of using a view though...)?
Apparently, AS3 keeps track of each object that registers a listener for a given event in an internal array known as a "listener list" (Moock's Essential Actionscript 3.0, page 216). Is it possible to view this list somehow to check for stray listeners that may be slowing down your code, or to just check how many listeners are running at a particular time?
View 6 RepliesI'd like to display tool tips, once the user holds his mouse on an item of an opened combobox.Ifyou open the drop down list of a combo box, you'll see a list ofelements/items. Each of them can be accessed e.g. viamyCombo.getItemAt(0) .To me it seems I only get an object with adata and label property. But I think there must be more to it, becausewhen you hold your mouse over a sub-element, it'll be highlighted. Thismeans that there is some event listener on that very single item. Sohow can I do this?[code]
View 3 RepliesIf I were to have a list box component on screen which had an event listener to get changes, when navigating away from the current screen, is it a good idea to remove any listeners that exists in that frame? If so, what is the best way to do it.
Is this best practice in clearing up listeners?
Is there any way to test if a display object has been added to the display list?
View 9 RepliesI am using a Flash AS2 template for a PayPal shopping cart on my site. As the code is now, a new shipping charge is added to the buyers total for every item added. I would like it to have only 1 shipping charge, no matter how many items are added!
Actionscript Code:
import caurina.transitions.Tweener;cartItems = new Array();itemNr = -1;itemQty = 1;cartin = false;ctrl_mc.cart_mc.onRelease = showCart;attachMovie("cart","cart_mc",15000,
[code].....
this is the error I am having:
TypeError: Error #2007: Parameter listener must be non-null.at flash.events::EventDispatcher/removeEventListener()
at project1_fla::MainTimeline/btnName()
here is my code:
ActionScript Code:
import caurina.transitions.Tweener;
import caurina.transitions.properties.ColorShortcuts;[code]..........
Line 1 Frame 1:
[Code]...
I am trying to trace the results of my listener when the browser is resized...no avail. Are you able to see what I am doing wrong?
I am having a weird problem with scope/reference. I am using a loop to preload a number of thumbs in one go, I am creating a different listener for each one on the fly and then passing event handlers for each one of them. This should not be difficult using a loop, but somehow I cannot access the the parent object on my listener and therefore I can't do much with my thumbs after they are loaded.Here is the relevant segment of my code. myThumb_mc is a temporary variable that does not exist when the loop finishes, you can copy and paste this code to test it though. It should work to that extent. (you'll need an image1.jpg to be in the same directory)
Code:
var myThumb_mc = _root.createEmptyMovieClip("myThumb_mc", _root.getNextHighestDepth());
myThumb_mc.clipLoader = new MovieClipLoader();
myThumb_mc.clipLoader.loadClip("image1.jpg",myThumb_mc);[code].....
The code above works, but it does not look nice and it cannot be the right way of doing this. Long question short, how can I access the parent of a listener from a listener object? ._parent does not work.
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 ?
View 3 RepliesI am working on an older Flash project created in CS3 ActionScript 2.0 How can I make the pointer cursor change to the hand when hover over a list item?_root.slidePanel.myList'myList' is the list. I have traced out the contents of the List MC and it has a child MC called 'content_mc'. I assumed this was the object containing all of my list items but the only members of this MC I can see (when tracing them out) are 'setRGB' and 'searchKey'.
View 1 RepliesFlex 3 List control had a itemRollOver event. Flex 4 List doesn't have it. Is there an equivalent or a workaround for this issue?
View 2 Replies