Databases
StackOverflow2013
Postsdbo
POCore Data Saving Error
Body
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POCore Data Saving Error
    text
    copied!<p>I'm trying to save some data to core data from a different view and I keep getting a error when I press the button to save the data. The that I get is:</p> <pre><code>Unresolved error (null), (null) </code></pre> <p>Here's all my code:</p> <p>SomeViewController.h</p> <pre><code>#import &lt;UIKit/UIKit.h&gt; @class NameData; @interface SomeViewController : UIViewController &lt;NSFetchedResultsControllerDelegate&gt; { NSFetchedResultsController *fetchedResultsController; NSManagedObjectContext* managedObjectContext; NameData *nameData; } @property (nonatomic,retain) NSFetchedResultsController *fetchedResultsController; @property (nonatomic,retain) NSManagedObjectContext* managedObjectContext; @property (nonatomic,retain) NameData *nameData; - (IBAction)saveData; @end </code></pre> <p>SomeViewController.m</p> <pre><code>#import "SomeViewController.h" #import "NameData" @implementation SomeViewController @synthesize addTeam; - (void)viewDidLoad { [super viewDidLoad]; self.title = @"Add Name; } - (IBAction)saveData{ NSString *string = @"demo"; nameData.nameContent = string; nameData.name2Content = string; nameData.name3Content = string; NSError *error = nil; if (![nameData.managedObjectContext save:&amp;error]) { // Handle error NSLog(@"Unresolved error %@, %@", error, [error userInfo]); abort(); // Fail } } - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)dealloc { [nameData release]; } @end </code></pre> <p>NameData.h</p> <pre><code>#import &lt;CoreData/CoreData.h&gt; @interface NameData : NSManagedObject { } @property (nonatomic, retain) NSString * nameContent; @property (nonatomic, retain) NSString * name2Content; @property (nonatomic, retain) NSString * name3Content; @end </code></pre> <p>NameData.m</p> <pre><code>#import "NameData" @implementation NameData @dynamic nameContent; @dynamic name2Content; @dynamic name3Content; @end </code></pre>
 

Querying!

 
Guidance
An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload