iCloud UIDocumentPicker crashes intermittently and hangs

Question

Issue:

When choosing a document from iCloud the application randomly crashes, for most of the time the following code will work, but on rare occasions it will fail.

Answer 1

When calling the method, make sure you call it in background thread. It will fix the problem.

dispatch_async(dispatch_get_global_queuue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0),^{ // CALL YOUR METHOD });