On 21 Jun 2010, at 21:35, Michael Babin wrote: > On Jun 20, 2010, at 8:11 AM, Bernard Knaepen wrote: > >> The trouble I have is to access the attributed string within my code to >> later draw in a custom view. I am trying something like this: >> >> NSManagedObjectContext *context = [self managedObjectContext]; >> NSManagedObjectModel *model = [self managedObjectModel]; >> NSDictionary *entities = [model entitiesByName]; >> NSEntityDescription *entity = [entities valueForKey:@"signatures"]; >> >> NSFetchRequest * fetch = [[NSFetchRequest alloc] init]; >> [fetch setEntity: entity]; >> >> NSArray *results = [context executeFetchRequest:fetch error:nil]; >> >> myData = [[results objectAtIndex:0] valueForKey:@"sigText"]; >> >> NSAttributedString *signatureView = (NSAttributedString *)[NSUnarchiver >> unarchiveObjectWithData:myData]; >> >> [mypreview lockFocus]; >> [signatureView drawAtPoint:myPoint]; >> [mypreview unlockFocus]; >> >> >> Obviously something is wrong since the text is not drawn and the console >> outputs: >> >> -[NSConcreteMutableData drawAtPoint:]: unrecognized selector sent to >> instance 0x114a3afb0 > > From the error message, it would appear signatureView is not an > NSAttributedString (NSMutableData, instead). So work backwards. You're making > assumptions in your code: valueForKey:@"sigText" returns an NSData object, > using NSUnarchiver on it yields an NSAttributedString. Test them (step > through in debugger, NSLog(), etc) and see if your assumptions are valid. If > they aren't valid, then move back up the chain to where the value is stored > and see if you're storing the correct data. If your assumptions are valid, > then I would suspect there might be some intervening code and you may be > running into object ownership issues (retain/release, zombies). > >
Problem solved. In the .xib file, I had binded the NSTextView 'Data' to sigText. I now use the 'attributed string' value for the binding and everything is fine (shame on me for not having seen this option before). Mike, thanks your tip ;-) Bernard. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
