[CS3] .onLoad Problem

Hey everyone,

So I've been working on a Flash-based web portfolio for my sound design work, and I'm creating a gallery of images/sound clips which load dynamically (that way I don't need to recompress the swf file every time I add/remove a production). I'm having trouble with checking to see if files exist; for example, I want to check if a sound file exists, and if it does, set the alpha property of a symbol to 100%, and if it doesn't, set the alpha property of that symbol to 25%.

The code I'm using works fine when I test the file locally, but as soon as I upload the file and test it, the movie responds as if a file exists even when it doesn't, and I can't figure out why.

Here's the code in question:

fileExists = new LoadVars ();
fileExists._parent=this;
fileExists.onLoad = function (success) {
if(success) {
mySound.loadSound(this_sound,true);
mySound.stop();
mySound.setVolume(25);
_root.play_btn._alpha=100;
_root.stop_btn._alpha=100;
_root.volume_bar._alpha=100;
} else {
delete mySound;
mySound = new Sound();
_root.play_btn._alpha=25;
_root.stop_btn._alpha=25;
_root.volume_bar._alpha=25;
}
}
fileExists.load("somesound.mp3");

Why would this code behave correctly (i.e. change the alpha settings as expected) locally, but not online?

Thanks for your help.

Did you empty your browser cache when testing online ?

As far as i can see in the flash help LoadVars should not be used to download binary files like mp3s...

This is from the flash cs3 help :
Note: If a file being loaded contains non-ASCII characters (as found in many non-English languages), it is recommended that you save the file with UTF-8 or UTF-16 encoding as opposed to a non-Unicode format like ASCII.

I understand you are using the LoadVar to test if a file exists...but I doubt the response will be accurate when its not designed to do this...

Seems what you are doing is right after all :

http://www.flashguru.co.uk/checking-if-a-file-exists

did you try with the full url instead of 'somesound.mp3'
fileExists.load("somesound.mp3");

OK... i tried your code... i should have done that first...

Im using Flash CS3, exporting swf for flash player 9

your example works online and offline. I replaced your somesound.mp3 by the relative path of a jpeg i already had in a folder online and offline...

Everything works for me... maybe its more a security related bug...

my code :

Code:

---

fileExists = new LoadVars ();
fileExists._parent=this;
fileExists.onLoad = function (success) {
if(success) {
testbox.text='Sound loaded!';
} else {
testbox.text='Sound not loaded!';
}
}
fileExists.load("gallery/thumb_01.jpg");

---

I have to tell... in my previous post everything works: its not displayed 'Sound loaded' when the file does not exists, but instead, the code in onLoad is never called so I guess you can manage that by setting your opacity & volume to 25 before attempting to check if the file exists so when it does not its already in the right state (ie grayed and disabled)

graben,

Thanks for your messages; seems like you spent a lot of time on this today. It may be a security issue (it's not a browser caching issue, though it took me a little while before I tried that!), but I wouldn't even know how to check that.

I think, though, what you say in your last post has some possibilities of bearing fruit--I'll try starting with the 25% alpha settings as the "default" and only change them when .onLoad gets called.

Though I still have to wonder why the code executes as you'd expect locally. Weird.

Thanks for your help.

orph

Check the new thread I just created:
http://board.flashkit.com/board/showthread.php?t=787053

my code works well in IE 6 and 7. But on Firefox 3 only after you reload the page !

Flash is so weird sometimes...