how should I go about downloading files
how should I go about downloading files
- Subject: how should I go about downloading files
- From: "Laimonas Simutis" <email@hidden>
- Date: Thu, 10 Apr 2008 20:04:46 -0500
Hey,
This is my first cocoa projects so I am kind of finding my way around
the framework. The question I have is maybe more related to the design
practices with cocoa.
I make a HTTP call to a server which gives me back a list of urls
pointing to mp3 files. For each url handling I created FileDownloader
class that inside uses NSURLDownload class to download the mp3 file.
All works fine but I have a problem with finding a solution for
"queuing" the downloads. I want to control how many files will be
downloaded concurrently (usually it will be one or two). However right
now what I have is basically this:
NSArray *arr = ... get this puppy from parsing the server response
int i;
for(i=0; i<[arr count]; i++)
{
NSString *url = [arr objectAtIndex:i];
// now fetch the file
FileDownloader *downloader = [[FileDownloader alloc] init];
[downloader setDelegate:self];
[downloader downloadItem:url];
}
The problem with the above is that I spawn as many downloaders as the
urls returned by the server since downloadItem does't block. What
would be the best way to go about queueing these guys up? That way I
can have a predetermined set of progress indicators and stuff like
that.
Let me know if the question is too broad and i will try to narrow it down.
I find this delegate stuff in cocoa all over the places and it is
rather foreign concept to me, although I am getting used to it.
L
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