TableView单元格不显示信息

Question

我的设置： 我有一个插入了TableView的UIViewController。另外在viewController中我有一个文本框和一个滑块。我试图从我的文本字段持久化数据，存储它，然后获取请求使用textField中放置的任何信息填充单元格。但是，当我点击保存按钮时，没有填充tableCell。下面的.m文件是我的UIVeiwController。任何帮助将很好，为什么细胞不填充。谢谢！

#import "BottleViewController.h" 
    #import "LogEntry.h" 
    #import "CoreDataStack.h" 


    @interface BottleViewController() <NSFetchedResultsControllerDelegate> 

    @property (strong, nonatomic) IBOutlet UILabel *ouncesLabel; 
    @property (strong, nonatomic) UISlider *slider; 
    @property (strong, nonatomic) NSFetchedResultsController *fetchedResultsController; 
    @property (strong, nonatomic) IBOutlet UITableView *tableView; 
    @property (strong, nonatomic) IBOutlet UILabel *entryAmount; 
    @property (strong, nonatomic) IBOutlet UITextField *textField; 

    @end 

    @implementation BottleViewController 



    - (void)viewDidLoad 
    { 
     [super viewDidLoad]; 

     [self.fetchedResultsController performFetch:nil]; 
    } 

    -(void)dismissSelf{ 

     [self.presentingViewController dismissViewControllerAnimated:YES completion:nil]; 
    } 

    -(void)insertLogEntry { 
     CoreDataStack *coreDataStack = [CoreDataStack defaultStack]; 
     LogEntry *entry = [NSEntityDescription insertNewObjectForEntityForName:@"LogEntry" inManagedObjectContext:coreDataStack.managedObjectContext]; 
     entry.amount = self.slider.value; 
     entry.date = [[NSDate date] timeIntervalSince1970]; 
     entry.testString = self.textField.text; 

     [coreDataStack saveContext]; 

    } 

    - (IBAction)backWasPressed:(id)sender { 
     [self dismissSelf]; 
    } 






    - (IBAction)mySlider:(id)sender { 
     self.slider = (UISlider*)sender; 
     NSString *newText = [[NSString alloc] initWithFormat:@"%d", (int)self.slider.value]; 

     self.ouncesLabel.text = newText; 

    } 
    - (IBAction)saveWasPressed:(id)sender { 
     [self.view endEditing:YES]; 
     [self insertLogEntry]; 
    } 

    -(NSFetchRequest *)entryListFetchRequest{ 
     NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"LogEntry"]; 
     fetchRequest.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"date" ascending:NO]]; 


     return fetchRequest; 
    } 

    -(NSFetchedResultsController *)fetchedResultsController{ 
     if(_fetchedResultsController != nil){ 
      return _fetchedResultsController; 
     } 

     CoreDataStack *coreDataStack =[CoreDataStack defaultStack]; 
     NSFetchRequest *fetchRequest = [self entryListFetchRequest]; 

     _fetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:coreDataStack.managedObjectContext sectionNameKeyPath:nil cacheName:nil]; 
     _fetchedResultsController.delegate = self; 

     return _fetchedResultsController; 

    } 

    #pragma mark UITableViewDelegates 

    -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{ 

     return self.fetchedResultsController.sections.count; 

    } 

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

     id<NSFetchedResultsSectionInfo> sectionInfo = [self.fetchedResultsController sections][section]; 
     return [sectionInfo numberOfObjects]; 

    } 

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

     static NSString *CellIdentifier =@"Cell"; 
     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath]; 

     LogEntry *entry = [self.fetchedResultsController objectAtIndexPath:indexPath]; 


     cell.textLabel.text = entry.testString; 


     return cell; 
    } 

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


    @end 

Answer 1

没想到搞明白了。我忘了连接数据源和代表。