NSRangeException을 일으키는 UITableView의 여러 섹션?

Question

나는 카테고리 트리를 탐색하는 간단한 테스트 앱을 만들고있다. 나는 여러 섹션으로 테이블 뷰를 분할하려고 할 때마다, 나는 전혀 도움이 호출 스택과 SIGABRT를 얻을이 :

응용 프로그램을 종료로 인해 캐치되지 않는 예외 'NSRangeException'이유로 '*** - [__ NSArrayI objectAtIndex :] : 경계 1을 넘어선 인덱스 1 '

나는 모든 곳에서 중단 점을 넣었습니다. numberOfSectionsInTableView이 1을 반환하면 모든 것이 올바르게 작동하지만 2을 반환하면 다른 중단 점에 도달하지 않습니다. objectAtIndex을 호출 할 때마다 중단 점을 설정 했으므로 문제가있는 곳을 알 수 없습니다.

// 
// MasterViewController.m 
// Vingo 
// 
// Created by ryan on 12-01-23. 
// Copyright (c) 2012 __MyCompanyName__. All rights reserved. 
// 

#import "MasterViewController.h" 
#import "LinkViewController.h" 

@implementation MasterViewController 

@synthesize detailViewController = _detailViewController; 

- (void)awakeFromNib 
{ 
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) { 
     self.clearsSelectionOnViewWillAppear = NO; 
     self.contentSizeForViewInPopover = CGSizeMake(320.0, 600.0); 
    } 
    [super awakeFromNib]; 
} 

- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
    // Release any cached data, images, etc that aren't in use. 
} 

#pragma mark - View lifecycle 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
    self.detailViewController = (DetailViewController *)[[self.splitViewController.viewControllers lastObject] topViewController]; 
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) { 
     [self.tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0] animated:NO scrollPosition:UITableViewScrollPositionMiddle]; 
    } 

    self.navigationController.navigationBar.tintColor = [UIColor orangeColor]; 

    categories = [NSArray arrayWithObjects:[[VingoCategory alloc] initWithId:0 andName:@"A category"], nil]; 
    links = [NSArray arrayWithObjects:[[VingoLink alloc] initWithId:0 andName:@"A link"], nil]; 
    //links = [NSArray array]; // works 
} 

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

- (void)viewWillAppear:(BOOL)animated 
{ 
    [super viewWillAppear:animated]; 
} 

- (void)viewDidAppear:(BOOL)animated 
{ 
    [super viewDidAppear:animated]; 
} 

- (void)viewWillDisappear:(BOOL)animated 
{ 
    [super viewWillDisappear:animated]; 
} 

- (void)viewDidDisappear:(BOOL)animated 
{ 
    [super viewDidDisappear:animated]; 
} 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
    // Return YES for supported orientations 
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) { 
     return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); 
    } else { 
     return YES; 
    } 
} 

#pragma mark - Table data source 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 
    return [categories count] && section == 0 ? 
      [categories count] 
     : [links count]; 
} 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 
    if([categories count]) { 
     if([links count]) { 
      return 2; 
     } 

     return 1; 
    } 

    if([links count]) { 
     return 1; 
    } 

    return 0; 
} 

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { 
    return [categories count] && section == 0 ? 
      @"Categories" 
     : @"Links"; 
} 

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 
    static NSString *cellIdentifier = @"Cell"; 

    // Try to get a reusable cell: 
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier]; 

    if(!cell) { 
     cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier]; 
    } 

    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; 

    if([categories count] && indexPath.section == 0) { 
     NSLog(@"Looking for item %d in categories", indexPath.row); 
     VingoCategory *category = [categories objectAtIndex:indexPath.row]; 
     cell.textLabel.text = category.name; 
     cell.textLabel.tag = category.id; 
    } else { 
     NSLog(@"Looking for item %d in links", indexPath.row); 
     VingoLink *link = [links objectAtIndex:indexPath.row]; 
     cell.textLabel.text = link.name; 
     cell.textLabel.tag = link.id; 
    } 

    return cell; 
} 

- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath { 
    if([categories count] && indexPath.section == 0) { 

    } else { 
     LinkViewController *linkController = [[LinkViewController alloc] init]; 
     VingoLink *link = [links objectAtIndex:indexPath.row]; 
     linkController.navigationItem.title = link.name; 
     [self.navigationController pushViewController:linkController animated:YES]; 
    } 

    return indexPath; 
} 

/* 
// Override to support conditional editing of the table view. 
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    // Return NO if you do not want the specified item to be editable. 
    return YES; 
} 
*/ 

/* 
// Override to support editing the table view. 
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    if (editingStyle == UITableViewCellEditingStyleDelete) { 
     // Delete the row from the data source. 
     [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; 
    } else if (editingStyle == UITableViewCellEditingStyleInsert) { 
     // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view. 
    } 
} 
*/ 

/* 
// Override to support rearranging the table view. 
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath 
{ 
} 
*/ 

/* 
// Override to support conditional rearranging of the table view. 
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    // Return NO if you do not want the item to be re-orderable. 
    return YES; 
} 
*/ 

@end 

사람이 문제를 찾을 수 :

여기 내 구현 코드입니까? 나는 그것이 진실이 아닌 심각한 문제가 아니라는 것을 분명히 밝혀주고 싶다.

두 개의 동일한 NSArray에 대한 내 초기화는 viewDidLoad입니다.

Answer 1

새로운 섹션과 행을 추가하지 않는 것이 가장 좋습니다.

참조 UITableView의 insertSections: 물론 insertRowsAtIndexPaths:

, 당신은 다른 곳에서이 작업을 수행 할 수 있으며, 나는 그것을 모르고 ...