ID：[...]のNSManagedObjectが無効にされました

Question

コアデータを使用してアプリケーションを構築しています。 appDelegateによってロードされるMy RootViewControllerは、主にテンプレートからのストックです。しかし、私はエンティティ名を "Clocks"に変更し、一連の行を追加しました。

私のRootViewControllerは、UINavigationControllerを持つMVCを表示します。データベースにデータを保存すると、UINavigationControllerクラスは[[UIApplication sharedApplication]delegate]を使用してデータを保存し、実際に保存アクションを実行するappDelegateにアクセスしました。 データの編集も同じですが、アプリケーションデリゲートでinsert関数を呼び出す代わりに、update関数を呼び出します。

今、これはすべて実際には完璧です。しかし、...私のアプリがクラッシュするビューで編集と保存を開くだけで数回後に。

#import "RootViewController.h" 
#import "RootViewControllerClockCell.h" 
#import "RootViewControllerClockCellFooter.h" 
#import "configuration.h" 
#import "AddClockViewController.h" 
#import "clockAppDelegate.h" 

#import "AddClockNavigationController.h" 

@interface RootViewController() 
- (void)configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath; 
@end 


@implementation RootViewController 

@synthesize fetchedResultsController=fetchedResultsController_, managedObjectContext=managedObjectContext_; 


#pragma mark - 
#pragma mark View lifecycle 

- (void)viewDidLoad { 
    [super viewDidLoad]; 

    [self setTitle:NSLocalizedString(@"Alarms", @"AddClockNavigationController")]; 

    // Set up the edit and add buttons. 
    self.navigationItem.leftBarButtonItem = self.editButtonItem; 

    UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(showAddAlarmView)]; 
    self.navigationItem.rightBarButtonItem = addButton; 
    [addButton release]; 

    [self.tableView setSeparatorStyle:UITableViewCellSeparatorStyleNone]; 
    [self.tableView setBackgroundColor:[UIColor clearColor]]; 
    [self.tableView setBackgroundView:[[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"clockTableBackground"]] autorelease]]; 
    [self.tableView setAllowsSelectionDuringEditing:YES]; 

    if (managedObjectContext_ == nil) 
    { 
     managedObjectContext_ = [(ClockAppDelegate *)[[UIApplication sharedApplication] delegate] managedObjectContext]; 
     NSLog(@"After managedObjectContext: %@", managedObjectContext_); 
    } 

    locationManager = [[CLLocationManager alloc] init]; 
    locationManager.delegate=self; 
    locationManager.desiredAccuracy=kCLLocationAccuracyBest; 

    [locationManager startUpdatingLocation]; 
} 

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { 

    location = newLocation.coordinate; 
    [locationManager stopUpdatingLocation]; 

    [self.tableView reloadData]; 
} 

- (void)viewWillDisappear:(BOOL)animated 
{ 
    [locationManager stopUpdatingLocation]; 

    [super viewWillDisappear:animated]; 
} 


// Implement viewWillAppear: to do additional setup before the view is presented. 
- (void)viewWillAppear:(BOOL)animated { 
    [locationManager startUpdatingLocation]; 

    [super viewWillAppear:animated]; 
} 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { 
    if ([Configuration isIpad]) 
    { 
     return YES; 
    } 
    else { 
     return (interfaceOrientation == UIInterfaceOrientationPortrait); 
    } 
} 

- (void)configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath { 

    // @TODO 
    // Remove unused function 
} 

- (void)showAddAlarmView 
{ 
    AddClockNavigationController *viewController = [[AddClockNavigationController alloc] initWithNibName:@"AddClockNavigationController" bundle:nil]; 

    [[self navigationController] presentModalViewController:viewController animated:YES]; 
    [viewController release]; 
} 

#pragma mark - 
#pragma mark Add a new object 

- (void)setEditing:(BOOL)editing animated:(BOOL)animated 
{ 
    [super setEditing:(BOOL)editing animated:(BOOL)animated]; 
    self.navigationItem.rightBarButtonItem.enabled = !editing; 
} 

#pragma mark - 
#pragma mark Table view data source 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 
    return [[self.fetchedResultsController sections] count]; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 
    id <NSFetchedResultsSectionInfo> sectionInfo = [[self.fetchedResultsController sections] objectAtIndex:section]; 

    int retValue = [sectionInfo numberOfObjects]; 

    retValue++; 

    return retValue; 
} 

// Customize the appearance of table view cells. 
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    id <NSFetchedResultsSectionInfo> sectionInfo = [[self.fetchedResultsController sections] objectAtIndex:indexPath.section]; 

    if (indexPath.row < [sectionInfo numberOfObjects]) 
    { 
     static NSString *CellIdentifier = @"RootViewControllerClockCell"; 
     RootViewControllerClockCell *cell = (RootViewControllerClockCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 

     if (cell == nil){ 
      NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"RootViewControllerClockCell" owner:nil options:nil]; 

      for(id currentObject in topLevelObjects) 
      { 
       if([currentObject isKindOfClass:[RootViewControllerClockCell class]]) 
       { 
        cell = (RootViewControllerClockCell *)currentObject; 
        break; 
       } 
      } 
     } 

     // Configure the cell. 
     NSManagedObject *managedObject = [[self.fetchedResultsController objectAtIndexPath:indexPath] retain]; 

     [[cell titleText] setText:[[managedObject valueForKey:@"title"] description]]; 

     UISwitch *mySwitch = [[[UISwitch alloc] initWithFrame:CGRectZero] autorelease]; 
     [cell addSubview:mySwitch]; 
     cell.accessoryView = mySwitch; 
     [cell setSelectionStyle:UITableViewCellSelectionStyleNone]; 

     [mySwitch setTag:indexPath.row]; 

     BOOL isOn = [(NSNumber*)[managedObject valueForKey:@"active"] boolValue]; 

     [(UISwitch *)cell.accessoryView setOn:isOn]; 
     [(UISwitch *)cell.accessoryView addTarget:self action:@selector(setClockEnabled:) forControlEvents:UIControlEventValueChanged]; 

     [cell setEditingAccessoryType:UITableViewCellAccessoryDisclosureIndicator]; 

     [currentLocation release]; 
     [cellLocation release]; 
     [managedObject release]; 

     return cell; 
    } 
    else { 
     static NSString *CellIdentifier = @"RootViewControllerClockCellFooter"; 
     RootViewControllerClockCellFooter *cell = (RootViewControllerClockCellFooter*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 

     if (cell == nil){ 
      NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"RootViewControllerClockCellFooter" owner:nil options:nil]; 

      for(id currentObject in topLevelObjects) 
      { 
       if([currentObject isKindOfClass:[RootViewControllerClockCellFooter class]]) 
       { 
        cell = (RootViewControllerClockCellFooter *)currentObject; 
        break; 
       } 
      } 
     } 

     return cell; 
    } 
} 

- (NSString*)distanceToString:(double)distance 
{ 
    NSString *returnString = @""; 

    if (distance < 1000) 
    { 
     returnString = [NSString stringWithFormat:@"%gm", round(distance)]; 
    } 
    else { 
     returnString = [NSString stringWithFormat:@"%gkm", round(distance/1000)]; 
    } 

    return returnString; 
} 

- (void)setClockEnabled:(UISwitch*)sender 
{ 
    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:sender.tag inSection:0]; 

    NSManagedObject *managedObject = [self.fetchedResultsController objectAtIndexPath:indexPath]; 
    [managedObject setValue:[NSNumber numberWithBool:sender.on] forKey:@"active"]; 

    NSError *error = nil; 
    if (![fetchedResultsController_ performFetch:&error]) { 
     /* 
     Replace this implementation with code to handle the error appropriately. 

     abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. If it is not possible to recover from the error, display an alert panel that instructs the user to quit the application by pressing the Home button. 
     */ 
     NSLog(@"Unresolved error %@, %@", error, [error userInfo]); 
     abort(); 
    } 
} 

// Override to support conditional editing of the table view. 
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    id <NSFetchedResultsSectionInfo> sectionInfo = [[self.fetchedResultsController sections] objectAtIndex:indexPath.section]; 

    if ((indexPath.row > [sectionInfo numberOfObjects]-1) || [self.tableView numberOfRowsInSection:indexPath.section] == 1) 
     return NO; 
    else 
     return YES; 
} 

// Override to support editing the table view. 
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    if (editingStyle == UITableViewCellEditingStyleDelete) { 
     // Delete the managed object for the given index path 
     NSManagedObjectContext *context = [self.fetchedResultsController managedObjectContext]; 
     [context deleteObject:[self.fetchedResultsController objectAtIndexPath:indexPath]]; 

     // Save the context. 
     NSError *error = nil; 
     if (![context save:&error]) { 
      /* 
      Replace this implementation with code to handle the error appropriately. 

      abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. If it is not possible to recover from the error, display an alert panel that instructs the user to quit the application by pressing the Home button. 
      */ 
      NSLog(@"Unresolved error %@, %@", error, [error userInfo]); 
      abort(); 
     } 

     if ([self.tableView numberOfRowsInSection:0] == 1) 
     { 
      [self.tableView reloadData]; 
     } 
    } 
} 

- (void)updateAlarm:(NSManagedObject*)originalAlarm withAlarm:(NSManagedObject*)newAlarm 
{ 
    NSLog(@"Update!"); 

    NSManagedObjectContext *context = [self.fetchedResultsController managedObjectContext]; 
    [context deleteObject:originalAlarm]; 
    [context insertObject:newAlarm]; 

    // Save the context. 
    NSError *error = nil; 
    if (![context save:&error]) { 
     /* 
     Replace this implementation with code to handle the error appropriately. 

     abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. If it is not possible to recover from the error, display an alert panel that instructs the user to quit the application by pressing the Home button. 
     */ 
     NSLog(@"Unresolved error %@, %@", error, [error userInfo]); 
     abort(); 
    } 
} 

- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath { 
    // The table view should not be re-orderable. 
    return NO; 
} 


#pragma mark - 
#pragma mark Table view delegate 

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { 
    NSLog(@"Did select row"); 

    if ([self.tableView isEditing]) 
    { 
     // Show editing mode 
     NSManagedObject *managedObject = [self.fetchedResultsController objectAtIndexPath:indexPath]; 

     AddClockNavigationController *viewController = [[AddClockNavigationController alloc] initWithNibName:@"AddClockNavigationController" bundle:nil editManagedObject:managedObject];  
     [[self navigationController] presentModalViewController:viewController animated:YES]; 
     [viewController release]; 
    } 
} 

- (void)cancelAddAlarmView 
{ 
    [self.modalViewController dismissModalViewControllerAnimated:YES]; 
} 

#pragma mark - 
#pragma mark Fetched results controller 

- (NSFetchedResultsController *)fetchedResultsController { 

    if (fetchedResultsController_ != nil) { 
     return fetchedResultsController_; 
    } 

    /* 
    Set up the fetched results controller. 
    */ 
    // Create the fetch request for the entity. 
    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; 
    // Edit the entity name as appropriate. 
    NSEntityDescription *entity = [NSEntityDescription entityForName:@"Clocks" inManagedObjectContext:self.managedObjectContext]; 
    [fetchRequest setEntity:entity]; 

    // Set the batch size to a suitable number. 
    [fetchRequest setFetchBatchSize:20]; 

    // Edit the sort key as appropriate. 
    NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"addDate" ascending:NO]; 
    NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; 

    [fetchRequest setSortDescriptors:sortDescriptors]; 

    // Edit the section name key path and cache name if appropriate. 
    // nil for section name key path means "no sections". 
    NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:self.managedObjectContext sectionNameKeyPath:nil cacheName:@"Root"]; 
    aFetchedResultsController.delegate = self; 
    self.fetchedResultsController = aFetchedResultsController; 

    [aFetchedResultsController release]; 
    [fetchRequest release]; 
    [sortDescriptor release]; 
    [sortDescriptors release]; 

    NSError *error = nil; 
    if (![fetchedResultsController_ performFetch:&error]) { 
     /* 
     Replace this implementation with code to handle the error appropriately. 

     abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development. If it is not possible to recover from the error, display an alert panel that instructs the user to quit the application by pressing the Home button. 
     */ 
     NSLog(@"Unresolved error %@, %@", error, [error userInfo]); 
     abort(); 
    } 

    return fetchedResultsController_; 
}  


#pragma mark - 
#pragma mark Fetched results controller delegate 


- (void)controllerWillChangeContent:(NSFetchedResultsController *)controller { 
    [self.tableView beginUpdates]; 
} 


- (void)controller:(NSFetchedResultsController *)controller didChangeSection:(id <NSFetchedResultsSectionInfo>)sectionInfo 
      atIndex:(NSUInteger)sectionIndex forChangeType:(NSFetchedResultsChangeType)type { 

    switch(type) { 
     case NSFetchedResultsChangeInsert: 
      [self.tableView insertSections:[NSIndexSet indexSetWithIndex:sectionIndex] withRowAnimation:UITableViewRowAnimationFade]; 
      break; 

     case NSFetchedResultsChangeDelete: 
      [self.tableView deleteSections:[NSIndexSet indexSetWithIndex:sectionIndex] withRowAnimation:UITableViewRowAnimationFade]; 
      break; 
    } 
} 


- (void)controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject 
     atIndexPath:(NSIndexPath *)indexPath forChangeType:(NSFetchedResultsChangeType)type 
     newIndexPath:(NSIndexPath *)newIndexPath { 

    UITableView *tableView = self.tableView; 

    switch(type) { 

     case NSFetchedResultsChangeInsert: 
      [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath] withRowAnimation:UITableViewRowAnimationFade]; 
      break; 

     case NSFetchedResultsChangeDelete: 
      [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; 
      break; 

     case NSFetchedResultsChangeUpdate: 
      [self configureCell:[tableView cellForRowAtIndexPath:indexPath] atIndexPath:indexPath]; 
      break; 

     case NSFetchedResultsChangeMove: 
      [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; 
      [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath]withRowAnimation:UITableViewRowAnimationFade]; 
      break; 
    } 
} 


- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller { 
    [self.tableView endUpdates]; 
} 

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    id <NSFetchedResultsSectionInfo> sectionInfo = [[self.fetchedResultsController sections] objectAtIndex:indexPath.section]; 

    if (indexPath.row < [sectionInfo numberOfObjects]) 
    { 
     return 92; 
    } 
    else { 
     return 40; 
    } 
} 


/* 
// Implementing the above methods to update the table view in response to individual changes may have performance implications if a large number of changes are made simultaneously. If this proves to be an issue, you can instead just implement controllerDidChangeContent: which notifies the delegate that all section and object changes have been processed. 

- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller { 
// In the simplest, most efficient, case, reload the table view. 
[self.tableView reloadData]; 
} 
*/ 


#pragma mark - 
#pragma mark Memory management 

- (void)didReceiveMemoryWarning { 
    // Releases the view if it doesn't have a superview. 
    [super didReceiveMemoryWarning]; 

    // Relinquish ownership any cached data, images, etc that aren't in use. 
} 


- (void)viewDidUnload { 
    // Relinquish ownership of anything that can be recreated in viewDidLoad or on demand. 
    // For example: self.myOutlet = nil; 
} 

- (void)dealloc { 
    [fetchedResultsController_ release]; 
    [managedObjectContext_ release]; 

    [locationManager stopUpdatingLocation]; 
    [locationManager release]; 

    [super dealloc]; 
} 


@end 

EDIT：これは私のRootViewController.mのコードがhttp://dl.dropbox.com/u/3077127/has_been_invalidated.mov

である：それはシミュレータで、私のiPhone 4の両方でこれを行います。この私が何を意味するかの一例（動画）であります
これは、保存ボタンのコードで、AddClockNavigationController.m：

- (IBAction)saveAlarm 
{ 
    [self saveTheAlarm]; 
} 

- (void)saveTheAlarm 
{ 
    AddClockViewController *viewController = [navigationController.viewControllers objectAtIndex:0]; 

    UITableView *alarmTable = viewController.theTable; 

    NSIndexPath *textFieldIndexPath = [NSIndexPath indexPathForRow:0 inSection:0]; 
    UITextField *textField = (UITextField*)[[alarmTable cellForRowAtIndexPath:textFieldIndexPath] accessoryView]; 

    ClockAppDelegate *appDelegate = (ClockAppDelegate*)[[UIApplication sharedApplication] delegate]; 

    RootViewController *parentView = [[RootViewController alloc] init]; 
    [appDelegate addNewAlarmWithTitle:textField.text sound:@"" recurring:[viewController hasRecurring] recurringDays:viewController.recurringDictionary]; 

    [parentView.tableView reloadData]; 
    [self.parentViewController dismissModalViewControllerAnimated:YES]; 

    [parentView release]; 
} 

ClockAppDelegate.mそれは私が間違っているのは何

- (void)addNewAlarmWithTitle:(NSString*)alarmTitle sound:(NSString*)sound recurring:(BOOL)isRecurring recurringDays:(NSDictionary*)days 
{ 
    NSManagedObjectContext *context = managedObjectContext_; 
    NSManagedObject *newManagedObject = [NSEntityDescription insertNewObjectForEntityForName:@"Clocks" inManagedObjectContext:context]; 

    [newManagedObject setValue:alarmTitle forKey:@"title"]; 
    [newManagedObject setValue:sound forKey:@"alarm"]; 
    [newManagedObject setValue:[NSNumber numberWithBool:TRUE] forKey:@"active"]; 
    [newManagedObject setValue:[[NSDate alloc] init] forKey:@"addDate"]; 

    [newManagedObject setPrimitiveValue:[NSNumber numberWithBool:isRecurring] forKey:@"recurring"]; 

    NSArray *myKeys = [days allKeys]; 
    NSArray *sortedKeys = [myKeys sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)]; 

    for (id key in sortedKeys) { 
     if ([(NSString*)[days objectForKey:key] isEqualToString:@"1"]) 
     { 
      if ([key isEqualToString:@"0"]) 
      { 
       [newManagedObject setPrimitiveValue:[NSNumber numberWithBool:TRUE] forKey:@"mon"]; 
      } 
      else if ([key isEqualToString:@"1"]) 
      { 
       [newManagedObject setPrimitiveValue:[NSNumber numberWithBool:TRUE] forKey:@"tue"]; 
      } 
      else if ([key isEqualToString:@"2"]) 
      { 
       [newManagedObject setPrimitiveValue:[NSNumber numberWithBool:TRUE] forKey:@"wed"]; 
      } 
      else if ([key isEqualToString:@"3"]) 
      { 
       [newManagedObject setPrimitiveValue:[NSNumber numberWithBool:TRUE] forKey:@"thu"]; 
      } 
      else if ([key isEqualToString:@"4"]) 
      { 
       [newManagedObject setPrimitiveValue:[NSNumber numberWithBool:TRUE] forKey:@"fri"]; 
      } 
      else if ([key isEqualToString:@"5"]) 
      { 
       [newManagedObject setPrimitiveValue:[NSNumber numberWithBool:TRUE] forKey:@"sat"]; 
      } 
      else if ([key isEqualToString:@"6"]) 
      { 
       [newManagedObject setPrimitiveValue:[NSNumber numberWithBool:TRUE] forKey:@"sun"]; 
      } 
     } 
    } 

    // Save the context. 
    NSError *error = nil; 
    if (![context save:&error]) { 
     NSLog(@"Unresolved error %@, %@", error, [error userInfo]); 
     abort(); 
    } 
} 

？

敬具、
ポールPeelen

Managed object invalidated Problem: You see an exception that looks similar to this example:

[_assignObject:toPersistentStore:]: The NSManagedObject with ID:#### has been invalidated. Cause: Either you have removed the store for the fault you are attempting to fire, or the managed object's context has been sent a reset message.

Remedy: You should discard this object. If you add the store again, you can try to fetch the object again

Answer 1

From Core Data Docsだから、基本的に、あなたはその店または文脈から切り離さとなっている管理対象オブジェクトへの参照を持っています。

私はこれを実現するためのobviousl場所が表示されていないが、あなたはここにtableView:cellForRowAtIndexPath:で管理オブジェクトにメッセージを保持送っている：あなたは後でそれを離しても危険である...

NSManagedObject *managedObject = [[self.fetchedResultsController objectAtIndexPath:indexPath] retain]; 

を。管理対象オブジェクトを保持しないでください。代わりに、コンテキストを使用して保持します。それ以外の場合、コンテキストは管理対象オブジェクトを解放し、別のオブジェクトがそのオブジェクトを存続させている間は無効としてマークします。

あなたのコードをすべて調べて、管理対象オブジェクトに保持を送信し、不要な保持/解放コードを削除するすべての場所を見つけることをお勧めします。それはおそらく問題を解決するでしょう。

永続ストアが永続ストアコーディネータに正しく割り当てられていることを確認する必要がない場合は、それを確認する必要があります。

私はこの問題に直面していると私はリンゴのドキュメントから、この問題のための説明の下に管理オブジェクトコンテキストにコメントRESETによるソロいる

Answer 2

：

あなたがコンテキストに関連付けられているすべての管理対象オブジェクトを削除するにはNSManagedObjectContextのリセット方法を使用することができますあたかもそれを作成したかのように「やり直す」。そのコンテキストに関連付けられている管理対象オブジェクトはが無効化されたになるため、まだ関心のあるコンテキストに関連付けられたオブジェクトへの参照をすべて破棄して再フェッチする必要があります。