[iPhone] NSKeyedArchiver with NSValue Objects
[iPhone] NSKeyedArchiver with NSValue Objects
- Subject: [iPhone] NSKeyedArchiver with NSValue Objects
- From: "Henry McGilton (Boulevardier)" <email@hidden>
- Date: Thu, 24 Dec 2009 09:59:44 -0800
I bashed into a problem with NSKeyedArchiver trying to encode
NSValue objects.
I am using NSValue to wrap up CGPoint and CGSize structures, then
doing an encodeObject: forKey: to encode the NSValue.
I get this message:
[NSKeyedArchiver encodeValueOfObjCType:at:]: this archiver cannot encode structs'
I poked around in CocoaBuilder and Google for some definitive answers, but
the discussions appear to be mostly froth. This seems a little strange, as UIKit
provides a bunch of NSValue additions to encode those CG structs, but the
NSKeyedArchiver can't encode them. And the message is somewhat misleading:
I'm encoding the NSValue object, not the structure . . . I'm assuming (I know, one
should never assume) that the NSValue object is invoking that encodeValueOfObjCType:at:
message . . .
I'd like to get some clarification or definitive answers on what's going on . . .
The available discussions I was able to find were not very helpful . . .
In the meantime, for anybody else tripping over this, I worked around it by
encodeObject: NSStringFromCGPoint(point) forKey: locationKey
Cheers,
. . . . . . . . Henry
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