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POStoring int32 in Core Data model and Cocoa Error 1660
 

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    <p>Edit: I was able to fix the presentation thing by changing the NSLog to present the actual int rather than the pointer. </p> <blockquote> <p>NSLog(@"id: %i", [[info valueForKey:@"idQ"] intValue]);</p> </blockquote> <p>Still have the Cocoa error 1660 to solve??</p> <p>I am doing my first tests with Core Data and is using this (http://www.raywenderlich.com/934/core-data-tutorial-getting-started) tutorial.</p> <p>I have then tried my own tests and is somewhat successful. However, the int32 (only 32 because of the tutorial) is resulting in a strange number. I do suspect it has something to do with NSNumber. The Cocoa error 1660 i believe has something todo with to long number in the output (input = 1 and output = 95518976). I guess this is a question of being a pointer and needs to present correctly, but what about the error.</p> <p>Could someone nice give me a hint how to fix this?</p> <pre><code>- (void)testingDBmodel { NSLog(@"&gt;&gt;testingDBmodel&lt;&lt;"); //=================DATABASE===================// // id // qDiff // question // qRightAnswer // qWrongAnswer1 // qWrongAnswer2 // qNr // qRegDate if (managedObjectContext == nil) { managedObjectContext = [(FamQuiz_v2AppDelegate *) [[UIApplication sharedApplication] delegate] managedObjectContext]; } NSManagedObjectContext *context = [self managedObjectContext]; NSManagedObject *famQuizInfo = [NSEntityDescription insertNewObjectForEntityForName:@"questions" inManagedObjectContext:context]; [famQuizInfo setValue:[NSNumber numberWithInt:1] forKey:@"idQ"]; [famQuizInfo setValue:@"qDiff1" forKey:@"qDiff"]; [famQuizInfo setValue:@"question1" forKey:@"question"]; [famQuizInfo setValue:@"qRightAnswer1" forKey:@"qRightAnswer"]; [famQuizInfo setValue:@"qWrongAnswer1_1" forKey:@"qWrongAnswer1"]; [famQuizInfo setValue:@"qWrongAnswer2_2" forKey:@"qWrongAnswer2"]; [famQuizInfo setValue:@"999" forKey:@"qNr"]; [famQuizInfo setValue:[NSDate date] forKey:@"qRegDate"]; NSError *error; if (![context save:&amp;error]) { NSLog(@"Whoops, couldn't save: %@", [error localizedDescription]); } //==========READ DATABASE==============// NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"questions" inManagedObjectContext:context]; [fetchRequest setEntity:entity]; NSArray *fetchedObjects = [context executeFetchRequest:fetchRequest error:&amp;error]; for (NSManagedObject *info in fetchedObjects) { NSLog(@"id: %i", [info valueForKey:@"idQ"]); NSLog(@"qDiff: %@", [info valueForKey:@"qDiff"]); NSLog(@"question: %@", [info valueForKey:@"question"]); NSLog(@"qRightAnswer: %@", [info valueForKey:@"qRightAnswer"]); NSLog(@"qWrongAnswer1: %@", [info valueForKey:@"qWrongAnswer1"]); NSLog(@"qWrongAnswer2: %@", [info valueForKey:@"qWrongAnswer2"]); NSLog(@"qNr: %@", [info valueForKey:@"qNr"]); NSLog(@"qRegDate: %@", [info valueForKey:@"qRegDate"]); } [fetchRequest release]; </code></pre> <p>}</p> <p>The output:</p> <blockquote> <p>2010-12-03 01:11:54.097 Test_v2[11177:207] >>testingDBmodel&lt;&lt;<br> 2010-12-03 01:11:54.104 Test_v2[11177:207] Whoops, couldn't save: The operation couldn’t be completed. (Cocoa error 1660.)<br> 2010-12-03 01:11:54.112 Test_v2[11177:207] id:1<br> 2010-12-03 01:11:54.112 Test_v2[11177:207] qDiff: qDiff1<br> 2010-12-03 01:11:54.113 Test_v2[11177:207] question: question1<br> 2010-12-03 01:11:54.113 Test_v2[11177:207] qRightAnswer: qRightAnswer1<br> 2010-12-03 01:11:54.114 Test_v2[11177:207] qWrongAnswer1: qWrongAnswer1_1<br> 2010-12-03 01:11:54.114 Test_v2[11177:207] qWrongAnswer2: qWrongAnswer2_2<br> 2010-12-03 01:11:54.114 Test_v2[11177:207] qNr: 999<br> 2010-12-03 01:11:54.116 Test_v2[11177:207] qRegDate: 2010-12-03 01:11:54 +0100 </p> </blockquote>
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    1. COProblem fixed. Found this: http://stackoverflow.com/questions/1283960/iphone-core-data-unresolved-error-while-saving which helped me.
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