Question

我创建了一个基于导航的应用程序。在第一个视图中显示饮料列表，在第二个视图中它显示了饮料的详细信息。一切似乎还可以，但是当我在（void）tableView：（UITableView *）tableView didSelectRowAtIndexPath：（NSIndexPath *）indexPath方法导航视图时，它会显示错误，如

在抛出'NSException'实例后终止调用

在第

行

 [self.navigationController pushViewController:drinkDetailViewController animated:YES];

请帮助我，为什么会这样？

我的方法代码如下：

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

    DrinkDetailViewController *drinkDetailViewController = [[DrinkDetailViewController alloc] initWithNibName:@"DrinkDetailViewController" bundle:nil];
    //UINavigationController *navCon = [[UINavigationController alloc] initWithRootViewController:drinkDetailViewController];

    //[self presentModalViewController:drinkDetailViewController animated:YES];

    //[self dismissModalViewControllerAnimated:YES];

    // ...
    // Pass the selected object to the new view controller.
    [self.navigationController pushViewController:drinkDetailViewController animated:YES];

    [drinkDetailViewController release];

}

当我点击行时，它会显示异常消息。这是项目日志：

2011-08-10 10:18:10.559 DrinkMixer_Shreyash[694:207] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[UIViewController _loadViewFromNibNamed:bundle:] loaded the "DrinkDetailViewController" nib but the view outlet was not set.'
*** Call stack at first throw:
(
    0   CoreFoundation                      0x00dc25a9 __exceptionPreprocess + 185
    1   libobjc.A.dylib                     0x00f16313 objc_exception_throw + 44
    2   CoreFoundation                      0x00d7aef8 +[NSException raise:format:arguments:] + 136
    3   CoreFoundation                      0x00d7ae6a +[NSException raise:format:] + 58
    4   UIKit                               0x000c6709 -[UIViewController _loadViewFromNibNamed:bundle:] + 295
    5   UIKit                               0x000c4134 -[UIViewController loadView] + 120
    6   UIKit                               0x000c400e -[UIViewController view] + 56
    7   UIKit                               0x000c2482 -[UIViewController contentScrollView] + 42
    8   UIKit                               0x000d2f25 -[UINavigationController _computeAndApplyScrollContentInsetDeltaForViewController:] + 48
    9   UIKit                               0x000d1555 -[UINavigationController _layoutViewController:] + 43
    10  UIKit                               0x000d27aa -[UINavigationController _startTransition:fromViewController:toViewController:] + 326
    11  UIKit                               0x000cd32a -[UINavigationController _startDeferredTransitionIfNeeded] + 266
    12  UIKit                               0x000d4562 -[UINavigationController pushViewController:transition:forceImmediate:] + 932
    13  UIKit                               0x000cd1c4 -[UINavigationController pushViewController:animated:] + 62
    14  DrinkMixer_Shreyash                 0x000029bf -[RootViewController tableView:didSelectRowAtIndexPath:] + 191
    15  UIKit                               0x0008bb68 -[UITableView _selectRowAtIndexPath:animated:scrollPosition:notifyDelegate:] + 1140
    16  UIKit                               0x00081b05 -[UITableView _userSelectRowAtPendingSelectionIndexPath:] + 219
    17  Foundation                          0x0079b79e __NSFireDelayedPerform + 441
    18  CoreFoundation                      0x00da38c3 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 19
    19  CoreFoundation                      0x00da4e74 __CFRunLoopDoTimer + 1220
    20  CoreFoundation                      0x00d012c9 __CFRunLoopRun + 1817
    21  CoreFoundation                      0x00d00840 CFRunLoopRunSpecific + 208
    22  CoreFoundation                      0x00d00761 CFRunLoopRunInMode + 97
    23  GraphicsServices                    0x00ffa1c4 GSEventRunModal + 217
    24  GraphicsServices                    0x00ffa289 GSEventRun + 115
    25  UIKit                               0x00022c93 UIApplicationMain + 1160
    26  DrinkMixer_Shreyash                 0x00002089 main + 121
    27  DrinkMixer_Shreyash                 0x00002005 start + 53
    28  ???                                 0x00000001 0x0 + 1
)
terminate called after throwing an instance of 'NSException'
sharedlibrary apply-load-rules all
Current language:  auto; currently objective-c
(gdb)

请帮我解决一下。。。

Answer 1

iDroid Explorer，在您的饮料DetailViewController类中，您必须将视图变量连接到Xib文件的view元素。它必须通过界面构建器完成。

Answer 2

这是关于您在DrinkDetailViewController中的IBOutlet for View未在XIB文件中设置的崩溃。请在XIB中设置您的视图，然后尝试运行该应用程序。这是使用Interface builder ..

完成的

快乐编码......

导航点期间出错

2 个答案: