ActionScript 3.0 :: Add / Remove Child Versus Visible?
Feb 8, 2010
I'm converting to AS3 from AS2 and I really love the whole display list concept. I have some movie clips and components that appear and disappear based on some user button clicks. In AS2 I would just turn the visibility of my various display objects on and off, but I'm wondering if there are any memory/performance advantages to adding and removing the display object from the display list to accomplish the same thing.
Is there a performance and/or memory usage difference between these two scenarios? Scenario 1: N visual elements all added to stage; N-1 have visible = false, 1 has visible = true; Scenario 2: N visual elements, only 1 added to the stage at any time.
i'm new to AS3 and i was wondering what is the best way to remove a child at a point. i tried Holder.removeChild(Holder.getObjectsUnderPoint(new Point(exampleX, exampleY))[0]); however that returned ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.
I have an issue where removechild won't infact remove a child. I think its something to do with my dropTarget.parent issues. The concept of the code is that you drag a source onto a destination. When you drop the source onto the destination you will get a text field that says "Hello" or "Goodbye". The objective i want to achive is that once i drop a source onto the destination, removechild will remove any previouse textfields added. This is proving difficult.
so I have a movieclip on the stage(lets call that selection movieclip) that once a button is clicked is going to open another movieclip(call this slideshow) I am trying to remove the selection movieclip when you launch the slideshow movieclip.
the problem is that when i click on first button the Movie Clip does load ok but when i click on second button the first movie cliip is visible, i have try everything i have read here but no luck, i want to learn how to remove first child and allow only the second child to show up, i am looking forward to add more buttons so the remove child should be for multiple buttons, i am learning and so far did purchase a online tutorial but did not help me with this situation,
I have a child (an external swf) that I'm adding on frame 2 of my main timeline. It will load, but I have another issue. My timeline navigation is designed as such that the viewer can return to frame 1 after viewing frame 2. I don't want the child to be visible on frame 1 ever. Obviously, I can't simply use removeChild, because I haven't yet added it when frame 1 is reached and so I get a null object reference. I've also tried playing around with the visibility property of the child, but with no luck. I feel like I'm missing an obvious solution here. What should I do?
If there an object is placed on the stage named square and with the document class Main an object was added to square with addchild,if I wanted the square to not be visible but still be the parent while the new object added to square was made visible, how would you accomplish that?
My Trials: It seems if you set the parent to false visibility and then try to set the child visibility to true it disregards that request because the parent visibility overrides it, so the entire movieclip object remains completely invisible.It seems you can make a child become invisible while the parent is visible, but I want to do the opposite.
Let's say I have a canvas with a fixed height and a vertical scroll bar. And the canvas has 10 children in a vertical line (like a VBox) whose combined height exceeds the height of the canvas. Based on the scroll bar position, only some of the children will be visible at a time.Is it possible to determine which children are actually visible? Or whether or not a specific child is visible on screen?
I want that the s:VGroup container has the height only of its visible children. In this example there is a free space even the visibility mx:HorizontalList is set to false. Every time I change the visibility of the child element I want that the parent (s:VGroup) will change his height. How to do this in flex?
when i do this it does remove the child BUT i get the old "The supplied DisplayObject must be a child of the caller." business. How would i do this properly?????
flash and am trying to create a vending machine game but I seem to have come unstuck. The coin_slot that I have added doesn't seem to remove from the stage after frame3. I have included colour to the the event triggers to allow me to see what is happening at the moment the coin_slot image that I add does seem to remove from the stae but there still seems to be something hidden within the stage. This is still in really rough stage of development I just need to figure out the code at the moment.
none of it worked, It's just a minor cleanup really. Whenever you click a new picture you can see all the ones underneath it during the load so I just want to clear out those items or rather clear the loader before it loads something new.
I have a missile which gets fired once the mouse button is down. The main class snippet is:
ActionScript Code: public function moveTheBullet(event:Event):void { if(buttonDown)
[code]....
The bullet is now flying across the screen thanks to the Rock class which control its velocity and direction. When the missile is off the screen, however, I'd like to remove it, so it doesnt eat up memory. This is how I'm trying to accomplish that (the code's in the Rock class):
ActionScript Code: public function moveIt(event:Event):void { if(this.x > 200)
[code]....
But yeah, its not working at all. I'm getting the error: Error #2025: The supplied DisplayObject must be a child of the caller. how to remove the bullets.
I am making a game (surprise, surprise). In the game there are things to collect, possibly lives. I can add them to the screen but removing them is an issue. The best way I have worked out is to create a sprite called livesContainer, add all the lives to that, then, if the user returns to the main menu, I can remove all of the lives by removing that one container. Here's how I create all of the lives and add them to the stage. This all works and you don't really need to read all of it.[code]...
Main.swf creates a new instance of the SuperMan Class. I'm trying to get the SuperMan class to remove itself when you push a button that the class creates. I'm using:removeChild(this);However I am getting the error:ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.
I added the child each and Every time,once the child is added,when i add the next child the previous child is deleted this is my goal. am trying to remove the Child ,But Nothing Displayed in my screen. here my coding
This is just an example.. however i am trying to attach a M.C to attachHere. This is fine. However the following code is thn meant to remove 2 of the attached M.C's but i dont know how to reference it so that it removes the clips that are attached to attachHere...it works fine if i just attach the M.c's to the stage...
i am trying to use remove child i get the following error in the output panel
Hide video and learn buttonsremoved videoArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller. at flash.display::DisplayObjectContainer/removeChild() at DSE_MAIN_dizzy3_fla::MainTimeline/removeMedia() at DSE_MAIN_dizzy3_fla::MainTimeline/setNewMedia() at DSE_MAIN_dizzy3_fla::MainTimeline/onIntroClick()
i think the function thats causing the error is called removeMedia()this function is called from another function which is called by a buttonpress
I have made an xml object and add few children to it. I use appendChild() to add a child to the XML. But if i want to remove one, what should i do? I tried to search in the reference but I cant find a remove function.
I have a children tail_3, tail_4,tail_5....tail_10 of class Tail, How can I remove them dynamically? I tried the below code but isn't working, help me rectify
fo(var m:uint=1;m<10;m++) { var tempChildTail:Tail=new Tail();
Before i ask what im sure will be a very silly question, let me say that i am a total beginner at Action Script. I am trying my best to make a simple game for University, and i have tried, but cant figure it out.
Anyway, the game is basically Breakout, where you control a Paddle, and try to hit a ball towards blocks.I cant figure out how to remove the blocks when the ball hits them.[code]...
Does anyone know the actionscript 3.0 parameters in removing the child within a movieclip? This is my scenario:
1. I have two (2) languages which play on the main timeline. Each languages are movieclips.
2. I have a movieclip which has buttons. These buttons are added dynamically using "stage.addChild(main_menu)"
3. I have a go back button together with the main timeline. How can remove a child on a timeline? For example when I choose the language A: it will play through by a movieclip and the buttons will be added dynamically [the dynamically added buttons are inside this movieclip; also the AS3 is inside that movieclip]. I wanted to remove the added child when the go back button is pressed and return to certain frame on the main timeline. The go back button is not included in the said movieclip--it is within the same timeline of languages and I wanted the script to be on the main timeline.
