Best practice with Notifications on iphone [closed]

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I'm implementing a system to view the progress of a download in Objective-C, using NSUrlConnetion. Each time that I receive a part of a file I will send a notification by NSNotificationCenter, but with a file of 500-600 KB, how many message will I have? One for each byte or less? Is this a good way or is it too heavy?

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The size of the packets that NSURLConnection receives in the connection:didReceiveData method vary based on the speed of your connection. I've used NSURLConnection for downloading files up to 1.5GB and have always had good results updating a progress bar whenever connection:didReceiveData: is called.

The NSData* that you'll receive ranges from 2kb to 40kb. For small files you're likely to only get one or two connection:didReceiveData: calls before connectionDidFinishLoading: is called.

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You will definately have fewer. I'd say that it sounds like a solution that would work.