There doesn't appear to be any way to cancel state restoration other than from 
the app delegate method application:shouldRestoreApplicationState:. So if it's 
trying to restore a view controller for a document that is no longer available 
on the device, I want to cancel the whole restoration. The only object that 
knows which document was previously open is the view controller that displays 
the document. But the only methods offered for decoding a VC's state is 
decodeRestorationStateWithCoder:, which doesn't return anything like a BOOL to 
say if it could be restored or not.

Any ideas?

--
Steve Mills
Drummer, Mac geek

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