StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
primarykey
Id
20033473
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2013-11-17T16:57:25.463
FavoriteCount
0
LastActivityDate
2013-11-17T16:57:25.463
LastEditDate
LastEditorUserId
0
OwnerUserId
604004
ParentId
12439528
PostTypeId
2
Score
0
ViewCount
0
LastEditorDisplayName
text
Body
I was having the same problem. Are you trying to open the document inside viewDidLoad? Try moving the code to another method. It solved the problem for me. in ViewController.h <pre><code>@property (nonatomic,strong) NSManagedObjectContext *managedObjectContext; @property (nonatomic,strong) UIManagedDocument *document; </code></pre> in ViewController.m <pre><code>@synthesize managedObjectContext = _managedObjectContext; @synthesize document = _document; - (void)viewDidLoad { [super viewDidLoad]; // Do not try to open the document here // Call another method instead :D if (!_managedObjectContext) { [self createContext]; } } - (void)createContext { NSFileManager *fileManager = [NSFileManager defaultManager]; NSURL *url = [[fileManager URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject]; url = [url URLByAppendingPathComponent:@"Database"]; self.document = [[UIManagedDocument alloc] initWithFileURL:url]; // FILE DOES NOT EXIST - Let's create a new one if (![[NSFileManager defaultManager] fileExistsAtPath:[url path]]) { [self.document saveToURL:url forSaveOperation:UIDocumentSaveForCreating completionHandler:^(BOOL success) { if (success) { self.managedObjectContext = self.document.managedObjectContext; } else { NSLog(@"ERROR: Cannot create new document"); } }]; // FILE IS CLOSED - Let's open it } else if (self.document.documentState == UIDocumentStateClosed) { [self.document openWithCompletionHandler:^(BOOL success) { if (success) { self.managedObjectContext = self.document.managedObjectContext; } else { NSLog(@"File is closed and it wont open!"); } }]; // FILE EXISTS AND IS OPENED - Yay! } else { self.managedObjectContext = self.document.managedObjectContext; } } </code></pre>
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POUIManagedDocument OpenWithCompletionHandler never returns
 singulars
 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USGabrielOshiro
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.