Re: Failure on unarchiving a NSBezierPath
Re: Failure on unarchiving a NSBezierPath
- Subject: Re: Failure on unarchiving a NSBezierPath
- From: Jens Alfke <email@hidden>
- Date: Thu, 24 Apr 2008 12:20:19 -0700
On 23 Apr '08, at 8:42 AM, an0 wrote:
Nothing appeared when I opened a saved file, and log said:
2008-04-23 23:33:44.127 EasyDraw[631:10b] *** -[NSDocumentController
localizedFailureReason]: unrecognized selector sent to instance
0x11b210
Something sent -localizedFailureReason: to an instance of
NSDocumentController, apparently thinking it was an NSError*.
Given this method:
- (NSData *)dataOfType:(NSString *)typeName error:(NSError **)outError
{
return [NSKeyedArchiver archivedDataWithRootObject:view.drawing];
}
I suspect what happened is that NSKeyedArchiver returned nil for some
reason, and the caller of that method then looked at *outError to find
the reason for the error; but you didn't store anything in there, so
it got whatever happened to be in that variable, which in this case
may have been a pointer to the NSDocumentController.
So try adding a test for nil to your save method. It looks like that's
where the problem is.
—Jens
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