0

I'm having an issue with my Master View controller not appearing as specified by my storyboard.

By searching on this (awesome) site, I learned to check into my numberOfSectionsInTableView and tableView:numberOfRowsInSection: methods. I believe my issue is that tableView:numberOfRowsInSection: is returning 'int 0'.

Any help would be much appreciated.

My MasterViewController.m:

#import "ParentMasterViewController.h"
#import "ParentDetailViewController.h"
#import "NewEventDataController.h"
#import "NewEvent.h"

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

@implementation ParentMasterViewController

- (void)awakeFromNib
{
    [super awakeFromNib];

    self.dataController = [[NewEventDataController alloc] init];
}

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

}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma mark - Table View

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

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{   
    return [self.dataController countOfList];

}

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

    static NSString *CellIdentifier = @"Cell";

    static NSDateFormatter *formatter = nil;

    if (formatter == nil)
    {
        formatter = [[NSDateFormatter alloc] init];

        [formatter setDateStyle:NSDateFormatterShortStyle];
    }

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; // forIndexPath:indexPath];

    // note: Add some code like this to create a new cell if there are none to reuse
    if (cell == nil)
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }

    NewEvent *eventAtIndex = [self.dataController objectInListAtIndex:indexPath.row];

    [[cell textLabel] setText:eventAtIndex.event];

    [[cell detailTextLabel] setText:[formatter stringFromDate:(NSDate *)eventAtIndex.date]];

    return cell;
}

In addition, my NewEventDataController.m:

#import "NewEventDataController.h"
#import "NewEvent.h"

@interface NewEventDataController ()

- (void)initializeDefaultDataList;

@end

@implementation NewEventDataController

- (void)initializeDefaultDataList
{
    NSMutableArray *eventList = [[NSMutableArray alloc] init];

    self.masterNewEventList = eventList;

    NewEvent *event;

    NSDate *today = [NSDate date];

    event = [[NewEvent alloc] initWithName:@"Event" date:today];

    [self addNewEventWithEvent:event];
}

- (void)setMasterNewEventList:(NSMutableArray *)newList
{
    if (_masterNewEventList != newList)
        _masterNewEventList = [newList mutableCopy];
}

- (id)init
{
    if (self = [super init])
    {
        [self initializeDefaultDataList];

        return self;
    }

    return nil;
}

- (NSUInteger)countOfList
{
    return [self.masterNewEventList count];
}

- (NewEvent *)objectInListAtIndex:(NSUInteger)theIndex
{
    return [self.masterNewEventList objectAtIndex:theIndex];
}

- (void)addNewEventWithEvent:(NewEvent *)event
{
    [self.masterNewEventList addObject:event];
}

@end

Thanks in advance for taking a look.

4

1 回答 1

1

参考：表视图编程指南

如果我没有解释错误，那么您从某处复制了此代码并忘记更改此方法的实现。将其更改为每一行都有一个部分或注释掉整个方法：

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return 1;
}
于 2013-08-06T09:28:17.413 回答