ios - UITableView 删除/添加行导致 CoreData : Serious Application Error if another object has been selected in the MasterView of a SplitViewController

Question

更新 18/3 #2。我已经开始计算 beginUpdates 和 EndUpdates 以确保它们相等。就在出现异常之前，它们不同步。虽然不确定为什么。

18 月 3 日更新:我想我已经找到了问题，但我不确定我是否知道如何解决它。试验了几个小时后，我发现只有在 session 期间在 svc 的主 TableView 中选择了多个项目时，我才能使应用程序崩溃。当在主 TableView 中选择另一个项目时，详细 TableView 将获得一个新的对象集，并且 refreshtables 被调用，即使它在更新/移动/删除/插入循环的中途也是如此。因此问题;我认为它有更新旧故事对象的说明，即使在 detailviewcontroller 上设置了新故事对象。

在详细 View 中设置新故事之前，如何让动画/核心数据/表格 View 更新得到完整处理？当 setEditting == NO 时，我将更改保存到 managedObjectContext。我猜我需要创建一个自定义 setStory setter，它在接受新对象之前处理对 UITableView/CoreData 集的所有更新？

此代码在 didSelectRowAtIndexPath 中的 svc 的主 TableView Controller 上调用:

[detailViewController setStory:storySet]; //where storySet is the new story object
[detailViewController refreshTables];

我在尝试删除操作不会激活的行时出现间歇性错误，并且应用程序基本上挂起并出现以下错误(尽管该行已从 CoreData 集中删除)。如果我在一个 session 中从 svc 的主 TableView Controller 中选择了不止一行，就会发生这种情况。

谷歌搜索后，我认为这可能是 (void)controller:(NSFetchedResultsController *)controller didChangeObject:(id) 的问题，它在更新后调用以动画化用户所做的更改.

如何修复这些间歇性错误？

• 16/3我已尝试真正简化我的代码。我已经删除了对托管对象上下文的所有调用并将它们放在 setEditing 中，删除了多余的 [self.tableview reloadData] 和 [self.tableview setneedsdisplay] 并使“重新排序” bool 完全无效(它仍在代码中，但它总是设置为 NO，所以没有区别)。 UITableView 比以往任何时候都更稳定，但我仍然设法在删除时出现间歇性错误(偶尔在添加时)——它似乎需要一段时间才能崩溃，但它仍然会崩溃。**
• 15/3:我认为这与 CoreData/UITableView 不同步有关 - CoreData 认为它比 UITableView 少或多
• CoreData 集没有问题，只是动画/UI 方面的问题(已删除)
• 它是间歇性的，仅在某些删除时出现
• 在 railwayparade 的帮助下，我在 didChangeObject: 中实现了 NSFetchedResultsChangeMove，它修复了移动错误，但没有修复删除错误。

任何人都可以看到我遗漏的或我可以检查的任何内容吗？如果这有助于解决问题，我们很乐意提供更多信息。

对于此处发布的大量代码表示歉意。

错误:

CoreData: error: Serious application error. An exception was caught from the delegate of NSFetchedResultsController during a call to -controllerDidChangeContent:. attempt to insert row 3 into section 0, but there are only 3 rows in section 0 after the update with userInfo (null)

//
//  MakeSentenceTableViewController.h
//  StoryBot
//
//  Created by Glen Storey on 25/10/10.
//  Copyright 2010 Glen Storey. All rights reserved.
//

#import <UIKit/UIKit.h>
#import "AddStoryItem.h"
#import "Story.h"
#import "Sentence.h"


@interface MakeSentenceTableViewController : UITableViewController <NSFetchedResultsControllerDelegate, AddStoryItemDelegate, UINavigationControllerDelegate, UIImagePickerControllerDelegate, UITextFieldDelegate, UIPopoverControllerDelegate> {
    NSManagedObjectContext      *managedObjectContext;  
    NSFetchedResultsController  *fetchedResultsController;
    UIPopoverController         *popoverController;
    UIBarButtonItem             *playButtonItem;
    UIBarButtonItem             *addButtonItem;

    BOOL                        reordering;
    BOOL                        insert;
    BOOL                        delete;
    BOOL                        move;

    int                         beginUpdatesCount;
    int                         endUpdatesCount;

}
@property (nonatomic, retain)   Story *story;
@property (nonatomic, retain)   NSManagedObjectContext *managedObjectContext;
@property (nonatomic, retain)   UIBarButtonItem *playButtonItem;
@property (nonatomic, retain)   UIBarButtonItem *addButtonItem;
@property BOOL reordering,  insert,  delete,  move;

-(IBAction)createStoryModal:(id)sender;
-(void)refreshTables;
-(IBAction)pushShare:(id)sender;


@end


//
//  MakeSentenceTableViewController.m
//  
//
//  Created by Glen Storey on 25/10/10.
//  Copyright 2010 Glen Storey. All rights reserved.
//

#import "MakeSentenceTableViewController.h"
#import "ShareViewController.h"
#import "StoryBotAppDelegate.h"

@implementation MakeSentenceTableViewController
@synthesize story, managedObjectContext, addButtonItem, playButtonItem, reordering, insert, delete, move;

-(void)addStoryItemAction:(NSString*)text order:(NSNumber*)order image:(NSString*)image thumb:(NSString*)thumb{

    NSLog(@"Text: %@, Order: %@, Image: %@.", text, order, image);
    NSLog(@"beginUpdatesCount: %d vs. endUpdatescount: %d", beginUpdatesCount, endUpdatesCount);

    NSSet *sentences = [story sentences];
    NSNumber *maxOrder = [sentences valueForKeyPath:@"@max.order"];
    NSLog(@"maxOrder: %@", maxOrder);

    if(maxOrder == 0){

        maxOrder = [[NSNumber alloc] initWithInteger: 0];
    }

    //make a new sentence!
    Sentence *sentence = [NSEntityDescription insertNewObjectForEntityForName:@"Sentence" 
                                                       inManagedObjectContext:managedObjectContext];

    [sentence setText: text];
    [sentence setImage: image];
    [sentence setThumb: thumb];
    [sentence setBelongsTo: story];
    if([maxOrder intValue] >= 1 ){
            [sentence setOrder: [[NSNumber alloc] initWithInteger:[maxOrder intValue]+1]]; 
    }else{
            [sentence setOrder: [[NSNumber alloc] initWithInteger:1]];
    }
    NSMutableSet *mutableSet = [[NSMutableSet alloc] initWithSet:sentences];
    [mutableSet addObject:sentence];

    //NSLog(@"sentences before setWithSet %@", mutableSet);

    sentences = [[NSSet alloc] initWithSet: mutableSet];

    //NSLog(@"sentences after setWithSet %@", sentences); 

    [story setSentences:sentences];

    //NSError *error;  

    //BOOL isSaved = [managedObjectContext save:&error];
    //NSLog(@"isSaved? %@", (isSaved ? @"YES" :@"NO ") );

    //if (!isSaved) {
        //NSLog(@"%@:%s Error saving context: %@", [self class], _cmd, [error localizedDescription]);
        //Don't worry about this warning - just rem it out when finished (just a log)
      //  return;
    //} 

    [sentences release];
    [mutableSet release];

    //[self.tableView reloadData];
    //[self.tableView setNeedsDisplay];
    [self dismissModalViewControllerAnimated:YES];  



}

#pragma mark -
#pragma mark View lifecycle

-(id)initWithNibName:(NSString*)name bundle:(NSBundle*)bundle;
{
    self = [super initWithNibName:name bundle:bundle];

    if (self) {

        self.title = @"My Stories";

        addButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd 
                                                                                       target:self
                                                                                       action:@selector(createStoryModal:)];

        playButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemPlay 
                                                                                        target:self
                                                                                        action:@selector(pushShare:)];
        if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) { 
            [addButtonItem setEnabled:NO];
            [playButtonItem setEnabled:NO];
        }


        NSArray* toolbarItems = [NSArray arrayWithObjects:
                                 addButtonItem,
                                 [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace 
                                                                               target:nil
                                                                               action:nil],
                                 playButtonItem,
                                 nil];

        [toolbarItems makeObjectsPerformSelector:@selector(release)];
        self.toolbarItems = toolbarItems;  

        //NSLog(@"self: %@ self.toolbarItems: %@", self, self.toolbarItems);


        //Do I need to release UIBarButtonItems? 

        NSLog(@"initWithNibName:");
    }



    return self;
}

-(void)refreshTables{

    //use this to refresh for new table content. Also calls self.tableview reloadData so you don't need to call it afterward. 

    NSLog(@"===================================refreshTables");
    NSLog(@"story object %@", story);

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



    NSFetchRequest *request = [[NSFetchRequest alloc] init];
    NSEntityDescription *entity = [NSEntityDescription entityForName:@"Sentence" inManagedObjectContext:managedObjectContext];
    [request setEntity:entity];

    //sorting stuff:
    NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"order" ascending: YES];
    NSArray *sortDescriptors = [[NSArray alloc] initWithObjects: sortDescriptor, nil];
    [request setSortDescriptors:sortDescriptors];
    [sortDescriptors release];
    [sortDescriptor release];

    NSPredicate *predicateTitle = [NSPredicate predicateWithFormat:@"belongsTo=%@",story];
    [request setPredicate :predicateTitle];

    NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
    [dateFormatter setDateFormat:@"EEE, d MMM yyyy HH:mm:ss"];
    NSString *dateString = [dateFormatter stringFromDate:[story creationDate]];

    NSLog(@"dateString: %@", dateString);

    fetchedResultsController = [[NSFetchedResultsController alloc] 
                                initWithFetchRequest:request managedObjectContext:managedObjectContext 
                                sectionNameKeyPath:nil cacheName:dateString];

    fetchedResultsController.delegate = self;

    [request release];

    NSError *error;
    [fetchedResultsController performFetch:&error];

    [self.tableView reloadData];

}

- (void)viewDidLoad {
    [super viewDidLoad];

    self.title = @"My Story";

    NSLog(@"Passed Story Object: %@", story);
    //NSLog(@"managedObjectContext: %@", managedObjectContext); 
    //Need a predicate for belongsTo here.

    self.tableView.rowHeight = 50;

    if(story != NULL){
        if (managedObjectContext == nil) 
        { 
            NSLog(@"managedObjectContext == nil");
            managedObjectContext = [(StoryBotAppDelegate *)[[UIApplication sharedApplication] delegate] managedObjectContext];
            NSLog(@"After managedObjectContext: %@",  managedObjectContext);
        }else{
            NSLog(@"managedObjectContext != nil");
        }



        NSFetchRequest *request = [[NSFetchRequest alloc] init];
        NSEntityDescription *entity = [NSEntityDescription entityForName:@"Sentence" inManagedObjectContext:managedObjectContext];
        [request setEntity:entity];

        //sorting stuff:
        NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"order" ascending: YES];
        NSArray *sortDescriptors = [[NSArray alloc] initWithObjects: sortDescriptor, nil];
        [request setSortDescriptors:sortDescriptors];
        [sortDescriptors release];
        [sortDescriptor release];

        NSPredicate *predicateTitle = [NSPredicate predicateWithFormat:@"belongsTo=%@",story];
        [request setPredicate :predicateTitle];



        fetchedResultsController = [[NSFetchedResultsController alloc] 
                                    initWithFetchRequest:request managedObjectContext:managedObjectContext 
                                    sectionNameKeyPath:nil cacheName:nil];

        fetchedResultsController.delegate = self;

        [request release];

        NSError *error;
        [fetchedResultsController performFetch:&error];




    }



#pragma mark -
#pragma mark Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    // Return the number of sections.
    return 1;
}


- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    //Return the number of rows in the section.
    NSArray *sections = [fetchedResultsController sections];
    NSInteger count = 0;

    if ([sections count]){
        id <NSFetchedResultsSectionInfo> sectionInfo = [sections objectAtIndex:section];
        count = [sectionInfo numberOfObjects];

    }
    NSLog(@"# of rows in section %d", count);
    return count;

}


// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }

    // Configure the cell...

    Sentence *sentenceAtCell = [fetchedResultsController objectAtIndexPath:indexPath];
    //NSLog(@"sentenceAtCell: %@", sentenceAtCell);

    cell.textLabel.text = [sentenceAtCell text];



    NSArray *paths       = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
    NSString *uniquePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:[sentenceAtCell thumb]];


    // This should crop it as you want - you've just got to create cropRect.

    UIImage *largeImage = [UIImage imageWithContentsOfFile: uniquePath];
    CGRect cropRect = CGRectMake(0, 0, 66, 50); 


    /*if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)]) {
        if ([[UIScreen mainScreen] scale] == 2) {
            // running an iPhone 4 or equiv. res device.
            cropRect = CGRectMake(15, 14, 100, 75); 
        }
    }*/


    CGImageRef imageRef = CGImageCreateWithImageInRect([largeImage CGImage], cropRect);
    cell.imageView.image = [UIImage imageWithCGImage: imageRef];
    CGImageRelease(imageRef);



    //NSLog(@"indexPath: %@", indexPath);

    return cell;
}

// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
    if (editingStyle == UITableViewCellEditingStyleDelete) {

        NSLog(@"Delete row");
        NSFileManager *fileManager = [NSFileManager defaultManager];
        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
        NSString *documentsDirectoryPath = [paths objectAtIndex:0];


        //  1. Look at the sentence we're about to delete.
        Sentence *sentenceRetire =      [fetchedResultsController objectAtIndexPath:indexPath];
        //  2. Does it have an order of 0? 
        NSLog(@"=================== sentenceRetire: %@", sentenceRetire);


        if([[sentenceRetire order] intValue] == 0){
                //      YES: Is there another sentence in this story?
                Story *storyRetire                      = [sentenceRetire belongsTo];
                NSSet *sentencesInRetiredSentenceSet    = [storyRetire sentences];


                if ([sentencesInRetiredSentenceSet count] > 1){
                    //          YES:    Set the sentence with the smallest order to an order of 0   
                    //                  then delete the sentence + files

                    NSPredicate *predicateTitle             = [NSPredicate predicateWithFormat:@"order>0"];
                    NSSet *sentencesWithPotentialToBeTitle  = [sentencesInRetiredSentenceSet filteredSetUsingPredicate:predicateTitle];
                    NSNumber *minOrder                      = [sentencesWithPotentialToBeTitle valueForKeyPath:@"@min.order"];  

                    NSPredicate *predicateOrder             = [NSPredicate predicateWithFormat:@"order=%d",[minOrder intValue]];
                    NSSet *sentenceWithPotentialToBeTitle   = [sentencesWithPotentialToBeTitle filteredSetUsingPredicate:predicateOrder];   

                    //note the sentence (singular) not sentences. This is the sentence who's order needs to be updated.     
                    NSLog(@"setenceWithPotentialToBeTitle (check order isn't null on crash): %@", sentenceWithPotentialToBeTitle);  
                    Sentence *sentenceToPromote = [sentenceWithPotentialToBeTitle anyObject];

                    //now we know which sentence to promote we can delete the sentence & Files.     
                    [managedObjectContext deleteObject:[fetchedResultsController objectAtIndexPath:indexPath]];

                    NSString *imageTrash = [documentsDirectoryPath stringByAppendingPathComponent:(NSString*)[sentenceRetire image]];
                    NSString *thumbTrash = [documentsDirectoryPath stringByAppendingPathComponent:[sentenceRetire thumb]];

                    NSLog(@"About to delete these files: %@, %@", imageTrash, thumbTrash);

                    [fileManager removeItemAtPath:imageTrash error:NULL];
                    [fileManager removeItemAtPath:thumbTrash error:NULL];

                    //and promote the new title.    
                    [sentenceToPromote setOrder:[[NSNumber alloc] initWithInteger:0]];



                }else{
                    //          NO:     We're deleting this story
                    //                  Delete the files! 
                    [managedObjectContext deleteObject:storyRetire]; 
                    NSString *imageTrash = [documentsDirectoryPath stringByAppendingPathComponent:(NSString*)[sentenceRetire image]];
                    NSString *thumbTrash = [documentsDirectoryPath stringByAppendingPathComponent:[sentenceRetire thumb]];

                    //NSLog(@"About to delete these files: %@, %@", imageTrash, thumbTrash);

                    [fileManager removeItemAtPath:imageTrash error:NULL];
                    [fileManager removeItemAtPath:thumbTrash error:NULL];

                //Pop back. 
                    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {      
                        NSLog(@"last sentence in story - delete that story and point, somewhere!");
                        //probably delete the sentece to clear the table, then delete the story using storyRetire

                    } else{
                        [self.navigationController popViewControllerAnimated:YES];
                    }
            }

        }else{
        //  NO: Delete the Sentence Object. 
            [managedObjectContext deleteObject:[fetchedResultsController objectAtIndexPath:indexPath]];

            NSString *imageTrash = [documentsDirectoryPath stringByAppendingPathComponent:(NSString*)[sentenceRetire image]];
            NSString *thumbTrash = [documentsDirectoryPath stringByAppendingPathComponent:[sentenceRetire thumb]];

            //NSLog(@"About to delete these files: %@, %@", imageTrash, thumbTrash);

            [fileManager removeItemAtPath:imageTrash error:NULL];
            [fileManager removeItemAtPath:thumbTrash error:NULL];

        }


        // Save the context.
        //NSError *error;
        //if (![managedObjectContext 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();
        //}

    }

}


- (void)setEditing:(BOOL)editing animated:(BOOL)animated
{
    [super setEditing:editing animated:animated];
    if (!editing) {
        //save here
        NSError *error;
        BOOL isSaved = [managedObjectContext save:&error];
        NSLog(@"isSaved? %@ ======================================", (isSaved ? @"YES" :@"NO ") );
    }
}


// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
    //this implementation is from here: http://www.cimgf.com/2010/06/05/re-ordering-nsfetchedresultscontroller/

    NSMutableArray *things = [[fetchedResultsController fetchedObjects] mutableCopy];

    // Grab the item we're moving.
    NSManagedObject *thing = [fetchedResultsController objectAtIndexPath:fromIndexPath];

    // Remove the object we're moving from the array.
    [things removeObject:thing];
    // Now re-insert it at the destination.
    [things insertObject:thing atIndex:[toIndexPath row]];

    // All of the objects are now in their correct order. Update each
    // object's displayOrder field by iterating through the array.


    int i = 0;
    for (NSManagedObject *mo in things)
    {
        [mo setValue:[NSNumber numberWithInt:i++] forKey:@"order"];
    }


    NSLog(@"things: %@", things);
    [things release], things = nil; 

    //reordering = YES;
    //NSLog(@"moveRowAtIndexPath: IS reordering");
    //NSError *error;  
    //[managedObjectContext save:&error];   




}



#pragma mark -
#pragma mark Table view delegate
/**
 Delegate methods of NSFetchedResultsController to respond to additions, removals and so on.
 */

- (void)controllerWillChangeContent:(NSFetchedResultsController *)controller {

    // The fetch controller is about to start sending change notifications, so prepare the table view for updates.
    NSLog(@"controllerWillChangeContent: BeginUpdates");

    [self.tableView beginUpdates];

    beginUpdatesCount++;
    NSLog(@"====================beginUpdates was just incremented");
    NSLog(@"beginUpdatesCount %d", beginUpdatesCount);
    NSLog(@"endUpdatesCount   %d", endUpdatesCount);

}


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

    NSLog(@"didChangeObject: %@", anObject);

    UITableView *tableView;
    tableView = self.tableView;

    switch(type) {
        case NSFetchedResultsChangeInsert:
            NSLog(@"ResultsChangeInsert:");
            insert = YES;
            [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath] withRowAnimation:UITableViewRowAnimationFade];

            break;

        case NSFetchedResultsChangeDelete:
            NSLog(@"ResultsChangeDelete:");
            delete = YES;
            [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];

            break;

        case NSFetchedResultsChangeMove:
            NSLog(@"ResultsChangeMove:");
            move = YES;
            [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationNone];
            [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath] withRowAnimation:UITableViewRowAnimationNone];
            break;

        default:
            NSLog(@"switch problem - default");
    }

}

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

    NSLog(@"didChangeSection:");
    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)controllerDidChangeContent:(NSFetchedResultsController *)controller {

    NSLog(@"didChangeContent");
    // The fetch controller has sent all current change notifications, so tell the table view to process all updates.
    NSLog(@"almost endUpdates==============================================");
    if(delete){
        NSLog(@"endUpdates delete");
        delete = NO;
    }
    if(move){
        NSLog(@"endUpdates move");
        move = NO;
    }
    if(insert){
        NSLog(@"endUpdates insert");
        insert = NO;
    }

    [self.tableView endUpdates];
    endUpdatesCount++;

    NSLog(@"====================endUpdates was just incremented");
    NSLog(@"endUpdatesCount   %d", endUpdatesCount);
    NSLog(@"beginUpdatesCount %d", beginUpdatesCount);

    NSLog(@"endUpdates finished");

}


#pragma mark -
#pragma mark Memory management

- (void)dealloc {
    NSLog(@"Dealloc Sentence");
    //[fliteEngine stopTalking];
    //[fliteEngine release];
    addButtonItem   = nil;
    playButtonItem  = nil;

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) { 
        //It doesn't seem to get allocated because it's not set on the iPhone. 
        [addButtonItem  release];
        [playButtonItem release];
    }

    [story release];
    [fetchedResultsController release];

    [super dealloc];
}


@end

Answer 1

更新 18/3 #3 我读了 this question关于一个 fetchedResultsController 在创建一个新的之前需要将其委托(delegate)设置为 nil。我把

detailViewController.fetchedResultsController = nil;
detailViewController.fetchedResultsController.delegate = nil;

在 didselectrowatindexpath 上的 SVC 主视图中，问题已停止。每次在主视图中选择一行时，RefreshTables 都会创建一个新的 fetchedResultsController，我认为即使选择了一个新的故事对象，它们仍然会产生干扰。