AS3 Delay a for loop

[itbkris]

I'm writing an upload program to upload multiple files. It works great as long as I only upload one file but as soon as I add a second file it throws an error saying it can only perform one upload at a time. Is there a way I can have it not loop back through the for loop until the upload has completed?

Here is a chunk of my code


for(var q:int = 0; q < selectedFileArray.length; q++)
{
trace("Loop marker 1");
fr.addEventListener(Event.COMPLETE, completeHandler);
fr.addEventListener(IOErrorEvent.IO_ERROR, function(e:IOErrorEvent):void{ trace(e) });
fr = FileReference(selectedFileArray[q]);
fullfile = fr.name;
filesplit = fullfile.split(".");
fileext = filesplit[1];
var uprequest:URLRequest = new URLRequest("www.myaddy.com");
fr.upload(uprequest);
function completeHandler(event:Event):void{ trace("Upload complete"); }
}

[milkmit]

Maybe this is a bit of a hacked solution, but couldn't you simply define a variable prior to loading your first one whose value is selectedFileArray.length, and then in the Event.COMPLETE handler for the loaded file do a (numberOfFiles--), and then finally do another check to see if numberOfFiles > 0, and if so load the next one?

And for how to reference each file each time you go through this sorta hacked loop, you could simple use selectedFileArray[numberOfFiles-1], which should cycle through each one as to decrement the value of numberOfFiles each time.

Does that make sense? Maybe there's a more efficient way, but I think that's how I might try it....and in fact, I'm shortly going to be working on a similar file-loading queue and I wasn't quite sure how to approach it, but I think this helped me think it through "out loud". ;)

[creatify]

I didn't test, but something like the following. Avoid the loop all together, that's what the complete handlers are for in this case. Also, not sure how you've instantiated fr - but you only need to add the listeners once. Also, I'm not sure what this is, but the constructor doen't take arguments? fr = FileReference(selectedFileArray[num]);


// avoid the loop
var total:int = selectedFileArray.length;
var q:int = 0;
fr.addEventListener(Event.COMPLETE, completeHandler);
fr.addEventListener(IOErrorEvent.IO_ERROR, function(e:IOErrorEvent):void{ trace(e) });

function startLoad(num:int):void {
fr = FileReference(selectedFileArray[num]);
fullfile = fr.name;
filesplit = fullfile.split(".");
fileext = filesplit[1];
var uprequest:URLRequest = new URLRequest("www.myaddy.com");
fr.upload(uprequest);
}

function completeHandler(event:Event):void {
trace("Upload complete: "+q);
q++;
if(q<total) {
startLoad(q);
} else {
trace("all loaded");
}
}

[itbkris]

That function works but it seems liek my file array only adds the last file so i'm fixing that. I'll post the results when done. Thanks for the help.

[milkmit]

Yay, looks like I was on the right track myself but yes, mine would load backwards. Thanks, creatify!