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Re: performBatchUpdates: + removeObjectAtIndex: = EXC_BAD_ACCESS
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Re: performBatchUpdates: + removeObjectAtIndex: = EXC_BAD_ACCESS

  • Subject: Re: performBatchUpdates: + removeObjectAtIndex: = EXC_BAD_ACCESS
  • From: Jens Alfke <email@hidden>
  • Date: Fri, 16 Jan 2015 21:50:20 -0800
I suspect your code is getting called on multiple threads, which would definitely cause crashes or heap corruption since you haven't added any synchronization around your objects. If you don't explicitly use multiple threads, maybe the UICollectionView is running your performBatchUpdates: block on a background thread? Set some breakpoints and look at what thread(s) they're hit on.

—Jens
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References: 
 >performBatchUpdates: + removeObjectAtIndex: = EXC_BAD_ACCESS (From: Josh Avant <email@hidden>)

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