Re: Unarchiving issues
Re: Unarchiving issues
- Subject: Re: Unarchiving issues
- From: Michael Ash <email@hidden>
- Date: Sun, 1 Aug 2010 23:34:40 -0400
On Sun, Aug 1, 2010 at 3:30 PM, James Maxwell
<email@hidden> wrote:
> Hello All,
>
> I have a strange problem with NSKeyedArchiver/Unarchiver. I have a very complex object graph that I want to be persistent, independently of my document objects, so I'm archiving it into the user's application support folder. The root object for the archive is a class called Network, which basically stores very little, but does store the "Hierarchy" for the object graph, which is basically just a 2D NSMutableArray (though it's a pretty big one). When I unarchive my Network root object, and initWithCoder gets called in the Network class, the Hierarchy seems fine -- I can iterate over the objects, posting relevant data, and everything looks good. However, once the Network is loaded into the application, iterating over the loaded Network Hierarchy gives an exc_bad_access error. I'm using the same routine to post the data, so nothing's changed there.
> The data that's causing the problem is a float* array, saved using encodeBytes:length:forKey, and decoded using decodeBytesForKey:returnedLength:, which is how I've saved a number of similar float* arrays in the Hierarchy.
> What I don't understand is how the Hierarchy can be fine at the end of the Network's initWithCoder method, but then get banjaxed somehow after that.
Post your code. It's *much* easier to debug code than a loose
description of code.
Mike
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