【发布时间】：2011-07-03 16:59:47
【问题描述】：
我正在创建一个 iPhone iOS 应用程序。我在标签栏控制器中有 3 个标签。当我在 iOS 模拟器中点击标签栏控制器上的第三个标签时，iOS 模拟器消失了，我看到 main.m 文件，上面有一个绿色突出显示：
int retVal = UIApplicationMain(argc, argv, nil, nil);
构建错误指出：线程 1：程序收到信号：SIGABRT
如果我查看屏幕底部的构建输出窗口，我会看到以下文本：
GNU gdb 6.3.50-20050815 (Apple version gdb-1518) (Sat Feb 12 02:52:12 UTC 2011)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin".Attaching to process 4283.
**2011-07-03 12:45:37.114 Cypher Bot[4283:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UIViewController 0x4e1b190> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key portraitView.'
*** Call stack at first throw:
(
0 CoreFoundation 0x00dce5a9 __exceptionPreprocess + 185
1 libobjc.A.dylib 0x00f22313 objc_exception_throw + 44
2 CoreFoundation 0x00dce4e1 -[NSException raise] + 17
3 Foundation 0x007a0677 _NSSetUsingKeyValueSetter + 135
4 Foundation 0x007a05e5 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 285
5 UIKit 0x0021c30c -[UIRuntimeOutletConnection connect] + 112
6 CoreFoundation 0x00d448cf -[NSArray makeObjectsPerformSelector:] + 239
7 UIKit 0x0021ad23 -[UINib instantiateWithOwner:options:] + 1041
8 UIKit 0x0021cab7 -[NSBundle(UINSBundleAdditions) loadNibNamed:owner:options:] + 168
9 UIKit 0x000d2628 -[UIViewController _loadViewFromNibNamed:bundle:] + 70
10 UIKit 0x000d0134 -[UIViewController loadView] + 120
11 UIKit 0x000d000e -[UIViewController view] + 56
12 UIKit 0x000e2f54 -[UITabBarController transitionFromViewController:toViewController:transition:shouldSetSelected:] + 120
13 UIKit 0x000e1aaa -[UITabBarController transitionFromViewController:toViewController:] + 64
14 UIKit 0x000e38a2 -[UITabBarController _setSelectedViewController:] + 263
15 UIKit 0x000e3711 -[UITabBarController _tabBarItemClicked:] + 352
16 UIKit 0x000204fd -[UIApplication sendAction:to:from:forEvent:] + 119
17 UIKit 0x00222ce6 -[UITabBar _sendAction:withEvent:] + 422
18 UIKit 0x000204fd -[UIApplication sendAction:to:from:forEvent:] + 119
19 UIKit 0x000b0799 -[UIControl sendAction:to:forEvent:] + 67
20 UIKit 0x000b2c2b -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527
21 UIKit 0x000b0750 -[UIControl sendActionsForControlEvents:] + 49
22 UIKit 0x000204fd -[UIApplication sendAction:to:from:forEvent:] + 119
23 UIKit 0x000b0799 -[UIControl sendAction:to:forEvent:] + 67
24 UIKit 0x000b2c2b -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527
25 UIKit 0x000b17d8 -[UIControl touchesEnded:withEvent:] + 458
26 UIKit 0x00044ded -[UIWindow _sendTouchesForEvent:] + 567
27 UIKit 0x00025c37 -[UIApplication sendEvent:] + 447
28 UIKit 0x0002af2e _UIApplicationHandleEvent + 7576
29 GraphicsServices 0x01007992 PurpleEventCallback + 1550
30 CoreFoundation 0x00daf944 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52
31 CoreFoundation 0x00d0fcf7 __CFRunLoopDoSource1 + 215
32 CoreFoundation 0x00d0cf83 __CFRunLoopRun + 979
33 CoreFoundation 0x00d0c840 CFRunLoopRunSpecific + 208
34 CoreFoundation 0x00d0c761 CFRunLoopRunInMode + 97
35 GraphicsServices 0x010061c4 GSEventRunModal + 217
36 GraphicsServices 0x01006289 GSEventRun + 115
37 UIKit 0x0002ec93 UIApplicationMain + 1160
38 Cypher Bot 0x00002889 main + 121
39 Cypher Bot 0x00002805 start + 53
40 ??? 0x00000001 0x0 + 1
)
terminate called after throwing an instance of 'NSException'
sharedlibrary apply-load-rules all
Current language: auto; currently objective-c
(gdb)**
>
在此之前我对第三个视图控制器所做的更改是：
- 添加横向支持
- 添加内存警告事件
- 添加允许您打开 SMS 应用程序的功能（我已将其删除，然后我运行了项目但没有任何反应）
编辑： 我已经包含了头文件：
#import <UIKit/UIKit.h>
@interface ThirdViewController : UIViewController {
IBOutlet UIView *landscapeView;
IBOutlet UIView *portraitView;
}
@property (nonatomic, retain) IBOutlet UIView *landscapeView;
@property (nonatomic, retain) IBOutlet UIView *portraitView;
@end
@properties 与@synthesize 一起使用，项目中没有错误或警告。
编辑 2：我已经删除了与 PortraitView 和 LandscapeView 相关的所有内容，现在当我运行它并点击更多时，我得到以下信息：
**Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Could not load NIB in bundle: 'NSBundle </Users/Spencer/Library/Application Support/iPhone Simulator/4.3.2/Applications/1E0A4C15-2143-442D-A8FC-4AE36CFC90E4/Cypher Bot.app> (loaded)' with name 'ThirdViewController.xib''**
我做错了什么？为什么我不能点击第三个标签？
感谢任何帮助！谢谢！
【问题讨论】：
-
'[ setValue:forUndefinedKey:]: This class is not key value coding-compliant for the key portraitView' 看起来像错误——你在任何地方都使用了一个名为 PortraitView 的变量吗？
-
是的，我正在使用 IBOutlet UIView *portraitView;我还将它与@property 和@synthesize 一起使用。
-
我已经检查了我的头文件，它们似乎没有任何问题，xib文件已经链接了它们的所有出口，我不知道我还能做什么。跨度>
-
再次检查您的 .xib 是否引用了“ThirdViewController”？
-
Xcode 是否可能不允许带有标签栏的横向模式？这就是我可能会收到此错误的原因吗？
标签： objective-c ios ios4 uitabbar build-error