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POI am trying to read and then update a value using Core Data, but when I run it, I get “EXC_BAD_ACCESS”, but when I debug it, it works
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  1. POI am trying to read and then update a value using Core Data, but when I run it, I get “EXC_BAD_ACCESS”, but when I debug it, it works
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    copied!<p>I am trying to get the hang of Core Data, and I am running into a strange issue. I have an app that uses a local notification to alert the user, whereupon the user enters my app and this method is called:</p> <pre><code>- (void)application:(UIApplication *)app didReceiveLocalNotification:(UILocalNotification *)notif { </code></pre> <p>When the app loads, I prompt another alert view to get some information from the user:</p> <pre><code>UIAlertView *alert = [[UIAlertView alloc] initWithTitle:[NSString stringWithFormat:@" Did you %@?", notif.alertBody] message:@"" delegate:self cancelButtonTitle:@"No..." otherButtonTitles:@"Yes!", nil]; [alert show]; </code></pre> <p>And then every time this alert is shown, I want to increment a counter value in my Core Data DB, and I do that by calling this method right after I show the alert:</p> <pre><code>[self incrementVal]; </code></pre> <p>Inside of this method, I read a value, turn it into an int, then pass the new number off to another method that will then save the new value in my db. </p> <pre><code>-(void) incrementVal{ //for reading from the db NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"score" inManagedObjectContext:managedObjectContext_]; [fetchRequest setEntity:entity]; NSError *error; NSPredicate * pred = [NSPredicate predicateWithFormat:@"id == 2"]; [fetchRequest setPredicate:pred]; NSArray * strengthVal = [managedObjectContext_ executeFetchRequest:fetchRequest error:&amp;error]; armorScore * armo = [strengthVal objectAtIndex:0]; int aScor = [armo.score intValue]; aScor++; //For updating the db [self updateDBVal:aScor]; [fetchRequest release]; } -(void) updateDBVal:(int)value{ NSFetchRequest *fetchRequest2 = [[NSFetchRequest alloc] init]; NSEntityDescription *entity2 = [NSEntityDescription entityForName:@"score" inManagedObjectContext:managedObjectContext_]; [fetchRequest2 setEntity:entity2]; NSError *error2; NSPredicate * pred2 = [NSPredicate predicateWithFormat:@"id == 2"]; [fetchRequest2 setPredicate:pred2]; NSArray * banna = [managedObjectContext_ executeFetchRequest:fetchRequest2 error:&amp;error2]; armorScore * bann2 = [banna objectAtIndex:0]; bann2.score = [NSString stringWithFormat:@"%d", value]; [managedObjectContext_ save:&amp;error2]; [error2 release]; [fetchRequest2 release]; } </code></pre> <p>So I don't know if this approach is ideal, but it is the one that I came up with. It runs fine when I debug it and go through each line, but when I just run it, it crashes saying Exc_Bad_Access...</p> <p>What am I doing wrong? I really want to get this figured out.</p> <p>Thanks!!</p>
 

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