unable to fetch saved data from core data

Question

When i search for saved data from core data, it is giving me old saved data while retrieving it. Need help to find my mistake

- (void)retrieveDataFromCoreData
{
    NSManagedObjectContext *context = [self managedObjectContext];

    NSEntityDescription *entityDesc = [NSEntityDescription entityForName:@"VitaminData" inManagedObjectContext:context];

    NSFetchRequest *request = [[NSFetchRequest alloc] init];
    [request setEntity:entityDesc];

     NSError *error = nil;
     NSArray *objects = [context executeFetchRequest:request
     error:&error];

    NSString *matchFound = nil;
    matches = [[NSMutableArray alloc]init];
     if ([objects count] == 0) {
     //matchFound = @"No matches";
     } else {
     matches = objects[0];
     matchFound = [matches valueForKey:@"userdetails"];
     }

NSLog("retrieved data : %@",matchFound);
}

Answer 1

Your fetch request has no predicate. That will cause it to fetch all of the VitaminData entities in your datastore.

Give it a predicate, and (probably) also some sort descriptors. Then iterate over the results. Note you should also check that objects is not nil after your -executeFetchRequest: . If objects is nil , there's an error in your fetch request, and you should look at the contents of error .