如何在仅显示某些记录时编辑nsfetchresults记录？

我想从另一个viewcontroller编辑nsfetchresults记录，如果我所有的数据库条目都显示，它工作正常。但是，当我按日期过滤表，并尝试对其进行编辑，我得到这个错误如何在仅显示某些记录时编辑nsfetchresults记录？

2013年3月22日23：09：02.895 easyDB [1079：907] *断言失败 - [UITableView的_endCellAnimationsWithContext：]，/SourceCache/UIKit/UIKit-2380.17/UITableView.m:1070 2013-03-22 23：09：18.865 easyDB [1079：907]抓到异常！

NSInternalInconsistencyException

无效更新：在部分0的行的无效数（6）的包含在现有部分中的更新后的行数必须等于之前包含在该部分的行数更新（2），加上或减去从插入或删除的行数（0插入，0删除）以及加或减行数移入或移出该部分的行数（移入0，0搬出）。

我通过

NSIndexPath *indexpath = (NSIndexPath*)sender; 
      GlucoseDetailViewController *glucoseDetailsVC = (GlucoseDetailViewController*)segue.destinationViewController; 
      GlucoseRecords *rec = [self.fetchedResultsController objectAtIndexPath:indexpath]; 
[glucoseDetailsVC setSentRecord:rec];

而且在编辑视图

[self.sentRecord setGlucose:[NSNumber numberWithInt:[[txtGlucoseReading text] intValue]]]; 

    [self.sentRecord setDate:self.dateToAdd]; 
    [self.sentRecord setMealType:[NSString stringWithString:self.strMealOption]]; 
    [self.sentRecord setQuickNote:[NSString stringWithString:self.strQuickNote]]; 
    [self.sentRecord setDeleted:[NSNumber numberWithBool:NO]]; 
    [self.sentRecord setWhoRecorded:[self.settings currentUser]]; 

    NSError *error; 
    if (![[self.settings managedObjectContext] save:&error]) 
     NSLog(@"Failed to add default user with error: %@", [error domain]);

FetchedResults控制器发送

- (NSFetchedResultsController *)fetchedResultsController { 

    if (_fetchedResultsController != nil && [self.strCurrentEntetyName isEqualToString:self.strEntetyName] &&(self.filteChanged==[NSNumber numberWithBool:NO])) { 
     return _fetchedResultsController; 
    } 


    self.filteChanged = [NSNumber numberWithBool:NO]; 
    self.strCurrentEntetyName = [NSString stringWithString:self.strEntetyName]; 

    NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:[self strEntetyName]]; 
    //NSEntityDescription *entity = [NSEntityDescription 
    //        entityForName:@"Records" inManagedObjectContext:[self.settings managedObjectContext]]; 

    if (self.isDateFilterSet==[NSNumber numberWithBool:NO]) 
    { 

    fetchRequest.predicate = [NSPredicate predicateWithFormat:@" whoRecorded.username = %@ AND deleted=0", [self.settings.currentUser username]]; 
    } 
    else 
    { 
     fetchRequest.predicate = [NSPredicate predicateWithFormat:@" (whoRecorded.username = %@) AND (deleted = 0) AND (date =>%@) AND (date<=%@)", [self.settings.currentUser username],self.dateMinSetFilter ,self.dateMaxSetFilter]; 


    } 

    NSLog(@"User:%@",[self.settings.currentUser username]); 

    // [fetchRequest setEntity:entity]; 

    NSSortDescriptor *sort = [[NSSortDescriptor alloc] 
           initWithKey:@"date" ascending:NO]; 
    [fetchRequest setSortDescriptors:[NSArray arrayWithObject:sort]]; 

    [fetchRequest setFetchBatchSize:100]; 

    NSFetchedResultsController *theFetchedResultsController = 
    [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest 
             managedObjectContext:[self.settings managedObjectContext] sectionNameKeyPath:nil 
                cacheName:nil]; 
    self.fetchedResultsController = theFetchedResultsController; 




    _fetchedResultsController.delegate = self; 




    return _fetchedResultsController; 

}

我的理解是什么问题，但我不能看到解决它的任何好方法。我可以重置表格以在编辑前显示所有条目，但我不认为这是一个好的解决方案。有没有更好的方法来解决这个问题？

谢谢

来源

2013-03-23 user2067051

请发表您的fetchedResultsController代码。 – 2013-03-23 05:52:52

已发布，谢谢！ – user2067051 2013-03-23 06:32:36

找到答案！

[self.tableView updateConstraintsIfNeeded];

所需此行添加到

- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller

来源

2013-03-23 20:36:29 user2067051

你是怎么'只显示一些记录'？使用NSPredicate来过滤结果或其他内容？

我认为你需要找到问题，是否因为你从另一个视图控制器操作一个tableview？

来源

2013-03-23 05:29:46 Kenny

是的，我按日期过滤它。对不起，不清楚。我已经将该代码添加到问题 – user2067051 2013-03-23 05:31:53

试试这个代码：

调用解析方法，请写之前：self.fetchedResultsController = nil;

- (NSFetchedResultsController *)fetchedResultsController // attaches an NSFetchRequest to this UITableViewController 
{ 
    if (_fetchedResultsController != nil) 
    { 
     return _fetchedResultsController; 
    } 

    NSLog(@"Length:: %d",[[_fetchedResultsController mutableCopy] length]); 

    NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"YourEntityName"]; 
    [fetchRequest setIncludesSubentities:YES]; 

    // Sort by Application name 
    NSSortDescriptor* sortDescriptor1 = [[NSSortDescriptor alloc] initWithKey:@"date" ascending:YES selector:@selector(localizedCaseInsensitiveCompare:)]; 
    //Sort by CommandNameloca 
    NSArray* sortDescriptors = [[NSArray alloc] initWithObjects: sortDescriptor1, nil]; 
    [fetchRequest setSortDescriptors:sortDescriptors]; 

    [fetchRequest setFetchBatchSize:100]; 

    tempArr=[[NSMutableArray alloc]initWithArray:sortDescriptors]; 

    NSLog(@"****----- tempArr Count == %d",[tempArr count]); 

    NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:self.managedObjectContext sectionNameKeyPath:@"date" cacheName:@"Master"]; 
    aFetchedResultsController.delegate = self; 
    self.fetchedResultsController = aFetchedResultsController; 

    NSError *error = nil; 

    if (![self.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. 
     NSLog(@"Unresolved error %@, %@", error, [error userInfo]); 
     abort(); 
    } 
    return _fetchedResultsController; 
}

请看看日志数组数英寸它会显示您获得的总记录。请分享你的结果。好运.. ！！

来源

2013-03-23 06:47:35

结果是什么？ – 2013-03-23 07:25:59

- [NSFetchedResultsController mutableCopyWithZone：]：无法识别的选择器发送到实例。我得到这个错误。从我修改你的代码。看起来，我在表格中获得了正确数量的条目。 – user2067051 2013-03-23 08:24:46

如何在仅显示某些记录时编辑nsfetchresults记录？

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