NSManagedObjectContext attributes of object nil
pI am trying to work with core data and already am able to store records
of my class Event.m. An event has a timestamp an a note./p pBut as i try
to read all entries in my table view to display them, I see that every
timestamp and note is nil (debug). Strange thing is, that my array I get
has the right size (number of entries) and also the table rows are created
(only no note si visible)./p pHere some of my code:/p precode-
(void)fetchRecords { // Define our table/entity to use NSEntityDescription
*entity = [NSEntityDescription entityForName:@Event
inManagedObjectContext:self.managedObjectContext]; // Setup the fetch
request NSFetchRequest *request = [[NSFetchRequest alloc] init]; [request
setEntity:entity]; // Define how we will sort the records NSSortDescriptor
*sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@timeStamp
ascending:NO]; NSArray *sortDescriptors = [NSArray
arrayWithObject:sortDescriptor]; [request
setSortDescriptors:sortDescriptors]; // Fetch the records and handle an
error NSError *error; NSMutableArray *mutableFetchResults =
[[self.managedObjectContext executeFetchRequest:request error:amp;error]
mutableCopy]; if (!mutableFetchResults) { NSLog(@Error fetching data.); }
// Save our fetched data to an array [self setEventArray:
mutableFetchResults]; NSLog(@Records found: %i, [eventArray count]); }
/code/pre pAnd this is where I save my object:/p precode- (void)
saveEntry: (NSString *) note { Event *event = (Event
*)[NSEntityDescription insertNewObjectForEntityForName:@Event
inManagedObjectContext:managedObjectContext]; [event setTimeStamp: [NSDate
date]]; [event setNote:@test]; NSError *error; if (![managedObjectContext
save:amp;error]) { NSLog(@Could not save entry.); } NSLog(@Entry saved.);
[eventArray insertObject:event atIndex:0]; } /code/pre pNote that there
are two different views, from which I access Core Data./p pAnd this is
where I get my MOC in this views:/p precode- (void)viewDidLoad { [super
viewDidLoad]; AppDelegate *appDelegate = (AppDelegate *)[[UIApplication
sharedApplication] delegate]; managedObjectContext =
appDelegate.managedObjectContext; } /code/pre pa
href=http://stackoverflow.com/questions/7199143/core-data-attribute-changes-to-nil-arc-relatedHere
I was reading/a, that it could come frome the MOC itself. This is how I
hold my variable in SecondViewCont/p precode#import Event.h #import
lt;CoreData/CoreData.hgt; #import AppDelegate.h @interface
SecondViewController : UITableViewController { NSManagedObjectContext
*managedObjectContext; NSMutableArray *eventArray; } @property (nonatomic,
strong) NSManagedObjectContext *managedObjectContext; @property
(nonatomic, strong) NSMutableArray *eventArray; - (void) fetchRecords;
@end /code/pre pAnd in my .m file I have:/p precode@synthesize
managedObjectContext, eventArray; /code/pre pThen I call
codefetchRecords/code./p pAny ideas why I have this problem?/p
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