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POEXC_BAD_ACCESS and i do not know how to find the problem
 

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  1. POEXC_BAD_ACCESS and i do not know how to find the problem
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    <p>I have a program that i am working on and this is what happen:</p> <p>I have a view controller (NewGameViewController) that calls an object. That object reads a .txt file into an array and then do a while loop to populate a Core Data database. I have had problems to populate the database but finally was able to sort that out. However i now get EXC_BAD_ACCESS after return to NewGameViewController.</p> <p>I have been trying to track down the problem but have not been successful (i am new to this). However i do believe the problem is somewhere in the while loop. I just cannot figure out how to identify the error, or even exactly where it crash.</p> <p>BTW, it seems like the actual loading of the database works well and just for the record the last .txt record consists of "99999".</p> <pre><code>- (void)populateTheDatabase { NSLog(@"\n \n &gt;&gt;&gt;&gt;&gt; START populateTheDatabase &lt;&lt;&lt;&lt;&lt; \n \n"); NSLog(@"&gt;&gt;populateTheDatabase&lt;&lt;"); // // Init parameters NSError *error = nil; int xx = 0; // Loop number int eOF; // Keep track of EOF in array int keyNumber = 0; NSString *qNr = [[NSString alloc] init]; int myInt; // //=========PREPARE CORE DATA DB===========// if (managedObjectContext == nil) { managedObjectContext = [(FamQuiz_v2AppDelegate *) [[UIApplication sharedApplication] delegate] managedObjectContext]; } // Define qContext NSManagedObjectContext *qContext = [self managedObjectContext]; //===============DELETE ALL RECORDS================// NSLog(@"\n \n Delete all records"); NSFetchRequest * allQzs = [[NSFetchRequest alloc] init]; [allQzs setEntity:[NSEntityDescription entityForName:@"questions" inManagedObjectContext:qContext]]; [allQzs setIncludesPropertyValues:NO]; //only fetch the managedObjectID // error = nil; NSArray * qZs = [qContext executeFetchRequest:allQzs error:&amp;error]; [allQzs release]; //error handling goes here for (NSManagedObject * rZ in qZs) { [qContext deleteObject:rZ]; } // //=========COUNT ENTITIES IN DB BEFORE INSERT DATA=========== NSFetchRequest *request = [[NSFetchRequest alloc] init]; [request setEntity: [NSEntityDescription entityForName: @"questions" inManagedObjectContext: qContext]]; // error = nil; NSUInteger countE = [qContext countForFetchRequest: request error: &amp;error]; NSLog(@"#entities in DB before insert: %i", countE); [request release]; // // // Fill myString with questions from the .txt file and then read .txt file NSString *filePath = @"/Users/PeterK/Documents/FamilyQuiz/FamQuiz_v2_02/loadq101023v2.txt"; NSString *myString = [[NSString alloc] initWithContentsOfFile:filePath]; // // Load array NSArray* myArray = [myString componentsSeparatedByString:@"\r"]; //NSLog (@"\n \n Number of elements in myArrayX = %i", [myArrayX count]); NSLog (@"\n \n Number of elements in myArray = %i", [myArray count]); // //NSLog(@"myArray: %@", myArray); // while (eOF != 99999) { NSLog(@"xx: %i", xx); qNr = [myArray objectAtIndex:xx]; eOF = [qNr intValue]; // if (eOF != 99999) { NSManagedObject *famQuizInfo = [NSEntityDescription insertNewObjectForEntityForName:@"questions" inManagedObjectContext:qContext]; // index = 0 : 'record number' [famQuizInfo setValue:[NSNumber numberWithInt:keyNumber] forKey:@"idQ"]; keyNumber = keyNumber++; NSLog(@"nr: %i - myArray 0: %@", xx, [myArray objectAtIndex:xx]); xx = xx++; // index = 1 : 'difficulties level' NSString *myObject1 = [[NSString alloc] init]; myObject1 = [myArray objectAtIndex:xx]; myInt = [myObject1 intValue]; [famQuizInfo setValue:[NSNumber numberWithInt:myInt] forKey:@"qDiff"]; NSLog(@"nr: %i - myArray 1: %@", xx, [myArray objectAtIndex:xx]); xx = xx++; [myObject1 release]; // index = 2 : 'category' not existing in the DB anymore, but exist in the .txt NSLog(@"nr: %i - myArray 2: %@", xx, [myArray objectAtIndex:xx]); xx = xx++; // index = 3 : 'question' [famQuizInfo setValue:[myArray objectAtIndex:xx] forKey:@"question"]; NSLog(@"nr: %i - myArray 3: %@", xx, [myArray objectAtIndex:xx]); xx = xx++; // index = 4 : 'right answer' [famQuizInfo setValue:[myArray objectAtIndex:xx] forKey:@"qRightAnswer"]; NSLog(@"nr: %i - myArray 4: %@", xx, [myArray objectAtIndex:xx]); xx = xx++; // index = 5 : 'wrong answer #1' [famQuizInfo setValue:[myArray objectAtIndex:xx] forKey:@"qWrongAnswer1"]; NSLog(@"nr: %i - myArray 5: %@", xx, [myArray objectAtIndex:xx]); xx = xx++; // index = 6 : 'wrong answer #2' [famQuizInfo setValue:[myArray objectAtIndex:xx] forKey:@"qWrongAnswer2"]; NSLog(@"nr: %i - myArray 6: %@", xx, [myArray objectAtIndex:xx]); xx = xx++; // placeholder for number of times the question is asked [famQuizInfo setValue:[NSNumber numberWithInt:0] forKey:@"qNrAccess"]; // date when the question was registred [famQuizInfo setValue:[NSDate date] forKey:@"qRegDate"]; // NSLog (@"\n ============== \n"); // // if (![qContext save:&amp;error]) { NSLog(@"Whoops, couldn't save: %@", [error localizedDescription]); error = nil; if (![qContext save:&amp;error]) { NSLog(@"Whoops, couldn't save: %@", [error localizedDescription]); // if(![[famQuizInfo managedObjectContext] save:&amp;error]) { NSLog(@"Failed to save to data store: %@", [error localizedDescription]); NSArray* detailedErrors = [[error userInfo] objectForKey:NSDetailedErrorsKey]; if(detailedErrors != nil &amp;&amp; [detailedErrors count] &gt; 0) { for(NSError* detailedError in detailedErrors) { NSLog(@" DetailedError: %@", [detailedError userInfo]); } } else { NSLog(@" %@", [error userInfo]); } } } } } } // // //=========COUNT ENTITIES IN DB AFTER INSERT DATA=========== NSFetchRequest *request2 = [[NSFetchRequest alloc] init]; [request2 setEntity: [NSEntityDescription entityForName: @"questions" inManagedObjectContext: qContext]]; error = nil; NSUInteger count2 = [qContext countForFetchRequest: request2 error: &amp;error]; NSLog(@"#entities in DB after insert: %i", count2); [request2 release]; // // [qNr release]; </code></pre> <p>}</p>
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