Unload swf

[jimbo]

Hi Flep,
I have a pages_mc with several frames, with labels , home, about, contact, and so on, each frame is one page of a site. On one frame I load a swf with your example code:

preloader_mc.stop();
preloader_mc.visible=false;

var swf:String='Oils.swf';
var richiesta:URLRequest=new URLRequest(swf);
var loader:Loader=new Loader();

loader.contentLoaderInfo.addEventListener(Event.OP EN,inizia);
loader.contentLoaderInfo.addEventListener(Progress Event.PROGRESS,inCaricamento);
loader.contentLoaderInfo.addEventListener(Event.CO MPLETE,completato);
loader.load(richiesta);

function inizia(e:Event):void
{
preloader_mc.visible=true;
preloader_mc.play();
}

function inCaricamento(e:ProgressEvent):void
{
var percentuale:uint=(e.bytesLoaded/e.bytesTotal)*100;
preloader_mc.loader_txt.text=percentuale.toString( )+' %';
}

function completato(e:Event):void
{
preloader_mc.stop();
preloader_mc.visible=false;
addChild(loader);
}

It works wonderful, but, when I navigate back to another page (frame), the swf remains. What script would I add to the other frames to unload this swf when I navigate to another page?

[Flep]

Hi

Before of:

var swf:String='Oils.swf';
var richiesta:URLRequest=new URLRequest(swf);
var loader:Loader=new Loader();

loader.contentLoaderInfo.addEventListener(Event.OP EN,inizia);
loader.contentLoaderInfo.addEventListener(Progress Event.PROGRESS,inCaricamento);
loader.contentLoaderInfo.addEventListener(Event.CO MPLETE,completato);
loader.load(richiesta);

try to say:
loader.unload();
remove all listeners of loader and reload var swf:String...etc etc

[jimbo]

Thank you . . . that is the first as3 I am learning that is as easy as as2 . . . it is very logical and very simple to understand.

[jimbo]

Okay, I still have trouble. I need to unload Oils.swf when the page changes - first I put the unload logic in the buttons:

home_btn.setLabel("Home");
home_btn.addEventListener(MouseEvent.CLICK, homeBtnClicked);
function homeBtnClicked(event:MouseEvent)
{
if (myPage == "oils")
{
//// unload Oils.swf ////
loader.unload();
loader.contentLoaderInfo.removeEventListener(Event .OPEN,inizia);
loader.contentLoaderInfo.removeEventListener(Progr essEvent.PROGRESS,inCaricamento);
loader.contentLoaderInfo.removeEventListener(Event .COMPLETE,completato);

} ///// end unload Oils.swf
if (myPage != "home") {
myPage = "home";
gotoAndPlay("pageTween");
}
trace ("Home Button Clicked");
}

But I get an error of: Access of undefined property loader when I compile.

So I put the unload code on each page that is NOT the Oils page, so that when a person goes to another page, if they come from the oils page, it will unload, but then I get the error:
Cannot access a property or method of a null object reference.
at content_fla::_pageContainer_11/content_fla::frame1()

How can I unload the Oils.swf after a visitor has clicked to the oils page, and then goes away?

[Flep]

The problem is you are moving the FLA timeline and ...for example... if you say
var loader:Loader;
in first frame and you try to get it from frame 5, Flash when moves from frame to frame deletes the variables.
In that case the var loader becomes local.
You should not move the FLA timeline.

Did you see this tut:
How to create a site loading external SWF with Flash CS3

[jimbo]

ahhh, I lose my timeline now :(
Well, I must learn. I have another syntax question. I notice that you have line breaks in the middle of statements - is this now allowed? We do not only have a line break after the ;

sezioni_array=new Array('http://www.flepstudio.org/swf/sito_tutorial/sezioni/home.swf',
'http://www.flepstudio.org/swf/sito_tutorial/sezioni/sezione1.swf',
'http://www.flepstudio.org/swf/sito_tutorial/sezioni/sezione2.swf',
'http://www.flepstudio.org/swf/sito_tutorial/sezioni/sezione3.swf',
'http://www.flepstudio.org/swf/sito_tutorial/sezioni/sezione4.swf',
'http://www.flepstudio.org/swf/sito_tutorial/sezioni/sezione5.swf');

[Flep]

It is allowed cos i'm filling up an Array.