There's some good information on this in TechNote 2009
<http://developer.apple.com/library/ios/#technotes/tn2009/tn2109.html> Also, here is some sample code you might find very helpful: <http://developer.apple.com/library/mac/#samplecode/LinkedImageFetcher/> as it does almost what you're describing. HTH, -Steve At 5:28 PM +0800 12/28/10, ico wrote:
Hi Stephen, Thanks for your reply, so there is no any perfect solution for this kind of problem? And can you give me a specific example to demonstrate why why it is not safe to release these async objects inside a callback method and why not safe to autorelease it? Thanks.
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