On Mar 27, 2012, at 14:16 , Conrad Shultz wrote: > As David already pointed out you should probably be using file URLs.
I made that change, and it behaves the same way. Even so, I don't see why that particular difference would allow it to work on the sim and not on the device. > There are a couple other issues: > > 1) You shouldn't handle errors by testing (err != nil). This might work > (since you initialized err to nil) assuming that removeItemAtURL: isn't > fiddling with err anyway, but it's not guaranteed. The preferred > approach is to test the return value of removeItemAtURL: (it returns > BOOL for a reason!) and examine err iff the method returns NO. Okay, I made that change, but it seems blatantly incorrect to create an error return if it is also going to return true. > 2) Less likely, but still reasonably plausible since you are working > with cache files (which I imagine have other clearance mechanisms), is > that you are encountering a race condition. It's possible that another > thread removed the file in the intervening time between your > fileExistsAtPath: and removeItemAtURL: calls. This is a major reason > why it's usually not useful to to ask "can I delete a file?" but rather > to try "delete the file!" and handle any errors appropriately. A race is possible, although I think unlikely (the call to the method that does the deletion is serialized on the main queue, although I suppose it's possible two operations are getting queued for the same file). In any case, I wasn't checking for it first, and then deleting it. I was checking for it only as a sanity check once I started seeing the problem. I was just deleting it and handling the error. -- Rick _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
