List,

OK to make my request a little more detailed.  In my tableview "cell for row at 
index path" method I make several URL requests that fill in a cell within a 
section.  E.G

section 1 - row 1  (1st url request)
section 1 - row 2 (2nd URL request),  etc...

section 2 - row 1 (URL request Same as url request in section 1 but different 
data supplied)
section 2 - row 2 (URL request Same as url request in section 1 but different 
data supplied)

Obviously I want each URL request as it ends to update the correct index path 
table cell. I would like to send index path as one of the parameters so that 
when I perform the selector in background. I can modify that specific cell with 
that result.  The method below only allows me one object, I'm not sure if the 
withObject:withObject: method will sole the problem if i create a compound 
selector with the @selector.

[self performSelectorInBackground:@selector(MakeURLRequest:) 
withObject:URLRequest];

All that said I would like to use URLconnection instead (as jens points out) 
they are asynch but again I have the problem of allocating the responses back 
to the correct index path object.



Jens,

Thanks..




On Nov 18, 2009, at 2:35 PM, Jens Alfke wrote:

> 
> On Nov 18, 2009, at 11:21 AM, Mark Bateman wrote:
> 
>> I am developing an App with a table that will hold URL content.  I want to 
>> download that in the background and then have it update the table as it 
>> arrives.
> 
> Don't do this using threads. Cocoa's networking APIs are asynchronous, so you 
> can start a download using NSURLConnection and it will run in the background 
> and notify your delegate when it's complete.
> 
> You almost never need to start threads in Cocoa programming. This can be hard 
> to adjust to if you come from other frameworks, esp. Java.
> 
> —Jens
> 

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