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我正在開發一個iPhone應用程序，它是一個tabViewController，其中包括一個tableView的選項卡之一。可以觸摸表格中的對象以轉到具有該特定對象信息的啓動畫面。UITableView ObjectAtIndex
下面是如何設置的陣列的tableView：
-(UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
//each table view cell has its own identifier.
static NSString *cellIdentifier = @"CellIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier] autorelease];
}
NSUInteger row = [indexPath row];
cell.textLabel.text = [sitesArray objectAtIndex:row];
cell.imageView.image = [imagesArray objectAtIndex:row];
cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
return cell;
}
- (void)viewDidLoad {
NSArray *pageHolder = [[NSArray alloc] initWithObjects:@"CSLP", @"NSLS", @"LSPA", @"SIOP", @"Transfer", nil];
self.pages = pageHolder;
[pageHolder release];
NSArray *sites = [[NSArray alloc] initWithObjects:@"CSLP", @"NSLS", @"LSPA", @"SIOP", @"Transfer Vision Program ", nil];
self.sitesArray = sites;
UIImage *cslp = [UIImage imageNamed:@"CSLP LOGO.png"];
UIImage *nsls = [UIImage imageNamed:@"NSLS LOGO.png"];
UIImage *lspa = [UIImage imageNamed:@"LSPA LOGO.png"];
UIImage *siop = [UIImage imageNamed:@"SIOP LOGO.png"];
UIImage *transfer = [UIImage imageNamed:@"TRANSFER LOGO.png"];
NSArray *images = [[NSArray alloc] initWithObjects: cslp, nsls, lspa, siop, transfer, nil];
[sites release];
self.imagesArray = images;
UIButton* modalViewButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[modalViewButton addTarget:self action:@selector(modalViewAction:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *modalBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:modalViewButton];
self.navigationItem.rightBarButtonItem = modalBarButtonItem;
[modalBarButtonItem release];
[self.table reloadData];
}
這是我的didSelectRowAtIndexPath方法方法
-(void) tableView:(UITableView *) tableView didSelectRowAtIndexPath: (NSIndexPath *) indexPath
{
NSInteger row = [indexPath row];
NSMutableDictionary *rowData = [table objectAtIndex:indexPath.row];
UIViewController *targetViewController = [rowData objectForKey:kViewControllerKey];
if (!targetViewController)
{
// The view controller has not been created yet, create it and set it to our menuList array
NSString *viewControllerName = [[pages objectAtIndex:indexPath.row] stringByAppendingString:@"ViewController"];
targetViewController = [[NSClassFromString(viewControllerName) alloc] initWithNibName:viewControllerName bundle:nil];
[rowData setValue:targetViewController forKey:kViewControllerKey];
[targetViewController release];
}
SSARC_App_2AppDelegate *delegate = [[UIApplication sharedApplication] delegate];
[delegate.orgsNavigationController pushNavigationItem:targetViewController animated:YES];
[delegate release];
}
在didSelectRowAtIndexPath方法方法第一次調用objectAtIndex應用程序崩潰。控制檯的狀態：
010-11-22 12：50：17.113 SSARC應用 2 [43470：207] - [UITableView的 objectAtIndex：]：發送到實例無法識別選擇 0x601e800 2010-11-22 12：50：17.116 SSARC應用2 [43470：207] *終止應用程序由於未捕獲的異常 'NSInvalidArgumentException' 的，原因是： ' - [UITableView的objectAtIndex：]： 無法識別的選擇發送到實例 0x601e800' *第一次投擲的籌碼堆：
現在，我有一個警告，說「UITableView可能無法響應ObjectAtIndex」。我認爲這是主要問題，但我不確定如何解決它。有趣的是，我在任何地方都搜索過這個問題，並且無法在任何地方找到它，所以我很想知道是否有人遇到了這個問題以及如何解決這個問題。任何建議都會很棒。如果您需要更多信息，請與我們聯繫。
我一直在做我自己的一些編碼，我已經得到它沒有任何錯誤或警告編譯，但它仍然崩潰。目前，這是我有：
NSMutableDictionary *rowData = [self.menuList objectAtIndex:indexPath.row];
UIViewController *targetViewController = [rowData objectForKey:kViewControllerKey];
if (!targetViewController)
{
// The view controller has not been created yet, create it and set it to our menuList array
NSString *viewControllerName = [[pages objectAtIndex:indexPath.row] stringByAppendingString:@"ViewController"];
targetViewController = [[NSClassFromString(viewControllerName) alloc] init];//WithNibName:viewControllerName bundle:nil];
NSLog(@"targetViewController: %@", targetViewController);
[rowData setValue:targetViewController forKey:kViewControllerKey];
[targetViewController release];
}
SSARC_App_2AppDelegate *delegate = (SSARC_App_2AppDelegate*)[[UIApplication sharedApplication] delegate];
[[delegate orgsNavigationController] pushViewController:targetViewController animated:YES];
[delegate release];
delegate = nil;
問題，調試器報告是「viewControllerName」是「超出範圍」。我不明白這是什麼意思，因爲當我使用NSLog時，viewControllerName被初始化。這是否意味着它找不到我指的類？請告訴我。
你可以顯示`sitesArray`屬性聲明嗎 – vikingosegundo 2010-11-22 22:19:54
你可以顯示`sitesArray`，`imagesArray`和`頁面的屬性聲明嗎？ – vikingosegundo 2010-11-22 22:25:58