这个代码有什么问题？不从核心数据填充表！！iPad

请帮我解决这个问题（我快疯了！），我的项目正在将数据正确地保存到coredata中的sqlite db，正如在sqlite Graphical manager中检查的那样，但我似乎无法在表视图中显示它，我需要在我的viewController中显示我的表（小表而不是整个屏幕）

如果你觉得慷慨，请检查我的小样本项目

这里是*viewcontroller.h的代码

（请注意，由于tableView不是UIViewController中的实例，因此我在表视图中包含了一个IBoutlet！）这样做是否正确？， 另外，在调用“tableView”的tableView>Local声明隐藏实例变量时，我得到了7个警告

#import <UIKit/UIKit.h>


@interface CoreDataEnsaViewController : UIViewController 
<UITableViewDelegate, UITableViewDataSource, NSFetchedResultsControllerDelegate> //va     controller delegate??


{

UITextField *name;
UITextField *address;
UITextField *phone;
UILabel         *status;


//la table
//NSMutableArray *array;

//la tabla??
UITableView *tableView;
NSFetchedResultsController *_fetchedResultsController;
NSManagedObjectContext *_context;  
}

@property (nonatomic, retain) IBOutlet UITextField *name;
@property (nonatomic, retain) IBOutlet UITextField *address;
@property (nonatomic, retain) IBOutlet UITextField *phone;
@property (nonatomic, retain) IBOutlet UILabel *status;

@property (nonatomic, retain) IBOutlet UITableView *tableView;

@property (nonatomic, retain) NSFetchedResultsController *fetchedResultsController;
@property (nonatomic, retain) NSManagedObjectContext *context;

- (IBAction) saveData;
- (IBAction) findContact;
- (IBAction) showbtn:(id) sender;

@end

#导入
@接口CoreDataEnsaViewController:UIViewController
//va控制器代表？？
{
UITextField*名称；
UITextField*地址；
UITextField*电话；
UILabel*状态；
//餐桌
//NSMutableArray*数组；
//拉塔布拉？？
UITableView*表格视图；
NSFetchedResultsController*\u fetchedResultsController；
NSManagedObjectContext*\u上下文；
}
@属性（非原子，保留）IBOutlet UITextField*名称；
@属性（非原子，保留）IBOutlet UITextField*地址；
@属性（非原子，保留）IBOutlet UITextField*电话；
@属性（非原子，保留）IBUILabel*状态；
@属性（非原子，保留）IBUITableView*tableView；
@属性（非原子，保留）NSFetchedResultsController*fetchedResultsController；
@属性（非原子，保留）NSManagedObjectContext*上下文；
-（i）保存数据；
-（i）已发现的联系；
-（iAction）showbtn:（id）发送方；
@结束

这里是*viewController.m

#import "CoreDataEnsaViewController.h"
#import "CoreDataEnsaAppDelegate.h"
#import "ShowViewController.h"

#import "Contacts.h"

@implementation CoreDataEnsaViewController

ShowViewController *showView;

@synthesize name, address, phone, status, tableView;

@synthesize context = _context;
@synthesize fetchedResultsController = _fetchedResultsController;

-(IBAction) showbtn:(id) sender {

showView = [[ShowViewController alloc] initWithNibName:@"ShowViewController"  bundle:nil];

//anima
[UIView beginAnimations:@"flipping view" context:nil];
   [UIView setAnimationDuration:1];
   [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlDown 
                       forView:self.view cache:YES];

[self.view addSubview:showView.view];
[UIView commitAnimations];  

}

  - (void) saveData
 {
CoreDataEnsaAppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];

NSManagedObjectContext *context = [appDelegate managedObjectContext];

NSManagedObject *newContact;

newContact = [NSEntityDescription insertNewObjectForEntityForName:@"Contacts"  inManagedObjectContext:context];

[newContact setValue:name.text forKey:@"name"];
[newContact setValue:address.text forKey:@"address"];
[newContact setValue:phone.text forKey:@"phone"];

name.text = @"";
address.text = @"";
phone.text = @"";

NSError *error;
[context save:&error];
status.text = @"Contact saved";
    }

    - (void) findContact
   {
CoreDataEnsaAppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];

NSManagedObjectContext *context = [appDelegate managedObjectContext];

NSEntityDescription *entityDesc = [NSEntityDescription entityForName:@"Contacts" inManagedObjectContext:context];

NSFetchRequest *request = [[NSFetchRequest alloc] init];

[request setEntity:entityDesc];

NSPredicate *pred = [NSPredicate predicateWithFormat:@"(name = %@)", name.text];

[request setPredicate:pred];

NSManagedObject *matches = nil;
NSError *error;

NSArray *objects = [context executeFetchRequest:request error:&error];

if ([objects count] == 0) {
    status.text = @"No matches";
} else {
    matches = [objects objectAtIndex:0];
    address.text = [matches valueForKey:@"address"];
    phone.text = [matches valueForKey:@"phone"];
    status.text = [NSString stringWithFormat:@"%d matches found", [objects  count]];
}
[request release];
    }

- (NSFetchedResultsController *)fetchedResultsController {

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

NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
NSEntityDescription *entity = [NSEntityDescription entityForName:@"Contacts" inManagedObjectContext:_context];
[fetchRequest setEntity:entity];

//NSSortDescriptor *sort = [[NSSortDescriptor alloc] initWithKey:@"details.closeDate"  ascending:NO];
//[fetchRequest setSortDescriptors:[NSArray arrayWithObject:sort]];

[fetchRequest setFetchBatchSize:20];

NSFetchedResultsController *theFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:_context sectionNameKeyPath:nil cacheName:@"Root"];
self.fetchedResultsController = theFetchedResultsController;
_fetchedResultsController.delegate = self;

[fetchRequest release];
[theFetchedResultsController release];

return _fetchedResultsController;    


}




// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];


}



- (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation {
// Overriden to allow any orientation.
return YES;
}


- (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 {
self.name = nil;
self.address = nil;
self.phone = nil;
self.status = nil;
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}



//tabla

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}

- (NSInteger)tableView:(UITableView *)tableView

numberOfRowsInSection:(NSInteger)section {

 id <NSFetchedResultsSectionInfo> sectionInfo = [[_fetchedResultsController  sections] objectAtIndex:section];
 return [sectionInfo numberOfObjects];

//return [array count];
//return [[fetchedResultsController sections] count];
  }


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

    Contacts *info = [_fetchedResultsController objectAtIndexPath:indexPath];
    cell.textLabel.text = info.name;
    cell.detailTextLabel.text = [NSString stringWithFormat:@"%@, %@", info.address, info.phone];

}


  //---insert individual row into the table view---

 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:  (NSIndexPath *)indexPath {

static NSString *CellIdentifier = @"Cell";
//---try to get a reusable cell---

UITableViewCell *cell = [tableView  dequeueReusableCellWithIdentifier:CellIdentifier];



//---create new cell if no reusable cell is available---

if (cell == nil) {

    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];


}


// Set up the cell...
[self configureCell:cell atIndexPath:indexPath];



return cell;

 } 



  - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

[tableView deselectRowAtIndexPath:indexPath animated:YES];



}

 //tabla end



 - (void)dealloc {
[name release];
[address release];
[phone release];
[status release];

self.fetchedResultsController = nil;
self.context = nil;

[super dealloc];
}


 #pragma mark NSFetchedResultsControllerDelegate methods

- (void)controllerWillChangeContent:(NSFetchedResultsController *)controller {
    // The fetch controller is about to start sending change notifications,  so    prepare the table view for updates.
    [self.tableView beginUpdates];
}


- (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];
            // Reloading the section inserts a new row and ensures that titles are updated appropriately.
            [tableView reloadSections:[NSIndexSet indexSetWithIndex:newIndexPath.section] withRowAnimation:UITableViewRowAnimationFade];
            break;
    }
}


- (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)controllerDidChangeContent:(NSFetchedResultsController *)controller {
    // The fetch controller has sent all current change notifications, so tell the table view to process all updates.
    [self.tableView endUpdates];}



@end

#导入“CoreDataEnsaViewController.h”
#导入“CoreDataEnsaAppDelegate.h”
#导入“ShowViewController.h”
#导入“Contacts.h”
@CoreDataEnsaViewController的实现
showView控制器*showView；
@综合姓名、地址、电话、状态、表格视图；
@综合上下文=_上下文；
@综合fetchedResultsController=\u fetchedResultsController；
-（iAction）showbtn:（id）发送方{
showView=[[ShowViewController alloc]initWithNibName:@“ShowViewController”捆绑包：nil]；
//阿尼玛
[UIView beginAnimations:@“翻转视图”上下文：nil]；
[UIView setAnimationDuration:1]；
[UIView设置动画曲线：UIViewAnimationCurveEaseInOut]；
[UIView setAnimationTransition:UIViewAnimationTransitionUrlDown
forView:self.view缓存：YES]；
[self.view addSubview:showView.view]；
[UIView委员会]；
}
-（void）保存数据
{
CoreDataEnsaAppDelegate*appDelegate=[[UIApplication sharedApplication]委托]；
NSManagedObjectContext*上下文=[appDelegate managedObjectContext]；
NSManagedObject*新联系人；
newContact=[NSEntityDescription insertNewObjectForEntityForName:@“Contacts”在ManagedObjectContext:context中]；
[newContact setValue:name.text forKey:@“name”]；
[newContact setValue:address.text forKey:@“address”]；
[newContact setValue:phone.text forKey:@“phone”]；
name.text=@；
address.text=@；
phone.text=@；
n错误*错误；
[上下文保存：&错误]；
status.text=@“已保存联系人”；
}
-（无效）已查找的联系人
{
CoreDataEnsaAppDelegate*appDelegate=[[UIApplication sharedApplication]委托]；
NSManagedObjectContext*上下文=[appDelegate managedObjectContext]；
NSEntityDescription*EntityDescription=[NSEntityDescription entityForName:@“Contacts”在ManagedObjectContext:context中]；
NSFetchRequest*request=[[NSFetchRequest alloc]init]；
[请求集合实体：entityDesc]；
NSPredicate*pred=[NSPredicate谓词格式：@“（name=%@）”，name.text]；
[请求集谓词：pred]；
NSManagedObject*匹配项=nil；
n错误*错误；
NSArray*对象=[context executeFetchRequest:请求错误：&错误]；
如果（[对象计数]==0）{
status.text=@“无匹配项”；
}否则{
matches=[objects objectAtIndex:0]；
address.text=[匹配valueForKey:@“地址”]；
phone.text=[匹配valueForKey:@“phone”]；
status.text=[NSString stringWithFormat:@“%d个已找到的匹配项”，[objects count]]；
}
[请求释放]；
}
-（NSFetchedResultsController*）fetchedResultsController{
如果（_fetchedResultsController！=nil）{
返回_fetchedResultsController；
}
NSFetchRequest*fetchRequest=[[NSFetchRequest alloc]init]；
NSEntityDescription*实体=[NSEntityDescription entityForName:@“Contacts”在托管对象上下文中：_context]；
[FetchRequestSetEntity:entity]；
//NSSortDescriptor*排序=[[NSSortDescriptor alloc]initWithKey:@“details.closeDate”升序：否]；
//[FetchRequestSetSortDescriptors:[NSArray arrayWithObject:sort]]；
[fetchRequest setFetchBatchSize:20]；
NSFetchedResultsController*OfftchedResultsController=[[NSFetchedResultsController alloc]initWithFetchRequest:fetchRequest managedObjectContext:_ContextSectionNameKeyPath:nil cacheName:@“Root”]；
self.fetchedResultsController=offettedResultsController；
_fetchedResultsController.delegate=self；
[请求释放]；
[故障诊断结果控制器释放]；
返回_fetchedResultsController；
}
//实现viewDidLoad以在加载视图（通常从nib）后执行附加设置。
-（无效）viewDidLoad{
[超级视图下载]；
}
-（布尔）应自动旋转指针面定向：（UIInterfaceOrientation）interfaceOrientation{
//覆盖以允许任何方向。
返回YES；
}
-（无效）未收到记忆警告{
//如果视图没有superview，则释放该视图。
[超级记忆警告]；
//释放所有未使用的缓存数据、图像等。
}
-（无效）视图卸载{
self.name=nil；
self.address=nil；
self.phone=nil；
self.status=nil；
[超级视频下载]；
//释放主视图的所有保留子视图。
//例如，self.myOutlet=nil；
}
//塔布拉
-（NSInteger）表格视图中的节数：（UITableView*）表格视图{
返回1；
}
-（NSInteger）表视图：（UITableView*）表视图
节中的行数：（NSInteger）节{
id sectionInfo=[[u fetchedResultsController sections]objectAtIndex:section]；
返回[sectionInfo numberOfObjects]；
//返回[c]数组
NSError *error = nil;
if (![[self fetchedResultsController] performFetch:&error]) {
    NSLog(@"Unsolved error: %@, %@", error, [error userInfo]);
    abort();
}
-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions...
{
  UINavigationController *navController = self.window.rootViewController
  MyViewController *controller = navController.viewControllers[0];
  controller.managedObjectContext = self.managedObjectContext;

  return YES;
}

-(void)prepareForSegue...
{
  MyOtherController *otherController = [segue destinationViewController];
  controller.managedObjectContext = self.managedObjectContext;
}