Crash in [ARTiledImageView downloadAndRedrawTilesWithURLs:] (ARTiledImageView.m:154) about artiledimageview HOT 3 CLOSED

@orta any ideas what this could be?

from artiledimageview.

this is weird,

my initial thoughts were that the ARTiledImageView could be nil'd during this, but the crash seems to be entirely related to local scope, so it's very unlikely. Perhaps this is a case of a secondary thread making changes to the urls dictionary? ( again, I think this won't be the case as urls isn't a instance var )

One potential fix, could be to switch to using - (void)enumerateKeysAndObjectsUsingBlock:(void (^)(id key, id obj, BOOL *stop))block but you really should be safe to use the key when you're iterating

from artiledimageview.

The only explanation that I can come up with is that the object is being destroyed on one thread, and still being access on another. We do [self.downloadOperations objectForKey:tileCacheKey], as self.downloadOperations is being cleared because dealloc calls cancelConcurrentDownloads, which calls [self.downloadOperations removeAllObjects];, on different threads.

I added a synchronized block, see cd3cd38.

from artiledimageview.