Scrolling through UITableView causes Exception and Crash only on iPhone 5C

Question

There is an exception being thrown when a user scrolls through my UITableView too fast or taps the status bar to jump to the top of the table. I am only seeing

Answer 1

The bug is not in the code you posted. The bug happens when a UITextView is reused while its links are still being generated, which is done asynchronously.

See these similar Stack Overflow questions:

• iOS 7 UITextView link detection crash in UITableView
• UITextViews in a UITableView link detection bug in iOS 7
• UITextView link detection in iOS 7

Many users have reported that setting the text view's text property to nil in the cell's prepareForReuse method resolves the issue. Alternatively you could use a library like TTTAttributedLabel instead of a text view.

The fact that it only appears on an iPhone 5C is probably a red herring. I bet this device is still running iOS 7, and the other devices have been updated to a newer version of iOS.

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On a side note, there may be edge cases that your regex doesn't cover. I would delete your twitter parsing method and replace it with the official twitter-text-objc library.