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使用uialertview时出现奇怪的sigabrt(无法识别的选择器发送到实例)

sigabrt uialertview iphone

esqew · 技术社区 · 14 年前

~~在过去的半个小时里,我一直在用这个工具猛击我的头,所以我想我应该从StackOverflow向我的朋友们寻求一些智慧。~~

我有一个选项卡应用程序,在根目录下有一个视图控制器,并将视图传递给其他人。 xib S.I创建了一个自定义XIB并添加了它的视图控制器类( MoreViewController )作为 External Object 在接口生成器中。当我链接我的方法时,我得到一个 SIGABRT 使用调用方法时出错 UIButton :

方法

- (IBAction)showAbout {
    alert = [[[UIAlertView alloc] initWithTitle:@"About" message:@"yadda yadda yadda some message" delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:nil] autorelease];
    [alert show];
}

栈

2010-09-17 18:01:40.714 <appname>[7963:207] -[__NSCFType showAbout]: unrecognized selector sent to instance 0x5f6ef10
2010-09-17 18:01:40.716 <appname>[7963:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFType showAbout]: unrecognized selector sent to instance 0x5f6ef10'
*** Call stack at first throw:
(
    0   CoreFoundation                      0x0247eb99 __exceptionPreprocess + 185
    1   libobjc.A.dylib                     0x025ce40e objc_exception_throw + 47
    2   CoreFoundation                      0x024806ab -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
    3   CoreFoundation                      0x023f02b6 ___forwarding___ + 966
    4   CoreFoundation                      0x023efe72 _CF_forwarding_prep_0 + 50
    5   UIKit                               0x002b07f8 -[UIApplication sendAction:to:from:forEvent:] + 119
    6   UIKit                               0x0033bde0 -[UIControl sendAction:to:forEvent:] + 67
    7   UIKit                               0x0033e262 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527
    8   UIKit                               0x0033ce0f -[UIControl touchesEnded:withEvent:] + 458
    9   UIKit                               0x002d43d0 -[UIWindow _sendTouchesForEvent:] + 567
    10  UIKit                               0x002b5cb4 -[UIApplication sendEvent:] + 447
    11  UIKit                               0x002ba9bf _UIApplicationHandleEvent + 7672
    12  GraphicsServices                    0x02d5e822 PurpleEventCallback + 1550
    13  CoreFoundation                      0x0245fff4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52
    14  CoreFoundation                      0x023c0807 __CFRunLoopDoSource1 + 215
    15  CoreFoundation                      0x023bda93 __CFRunLoopRun + 979
    16  CoreFoundation                      0x023bd350 CFRunLoopRunSpecific + 208
    17  CoreFoundation                      0x023bd271 CFRunLoopRunInMode + 97
    18  GraphicsServices                    0x02d5d00c GSEventRunModal + 217
    19  GraphicsServices                    0x02d5d0d1 GSEventRun + 115
    20  UIKit                               0x002beaf2 UIApplicationMain + 1160
    21  <appname>                           0x00001b30 main + 102
    22  <appname>                           0x00001ac1 start + 53
)
terminate called after throwing an instance of 'NSException'
Program received signal:  âSIGABRTâ.
[Switching to process 7963]
(gdb)

有人能解释一下吗?

事先谢谢!

编辑好吧,我已经启用了nszombie…我得到一个不那么神秘的错误!哇哦!

2010-09-17 18:48:56.576 <appname>[8088:207] *** -[MoreViewController performSelector:withObject:withObject:]: message sent to deallocated instance 0x5fa98e0

编辑2 使用Instruments的僵尸模式,我成功地发现了内存地址的内容,如下所示:

#   Category    Event Type  RefCt   Timestamp   Address Size    Responsible Library Responsible Caller
0   MoreViewController  Malloc  1   2968170752  0x5fa5ee0   144 UIKit   -[UIClassSwapper initWithCoder:]
1   MoreViewController  Retain  2   2968226816  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
2   MoreViewController  Retain  3   2968229888  0x5fa5ee0   0   Foundation  -[NSKeyedUnarchiver _replaceObject:withObject:]
3   MoreViewController  Release 2   2968232704  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
4   MoreViewController  Retain  3   2968236800  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
5   MoreViewController  Autorelease     2968259840  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
6   MoreViewController  Retain  4   2968262912  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
7   MoreViewController  Retain  5   2968322816  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
8   MoreViewController  Autorelease     2968324864  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
9   MoreViewController  Retain  6   2968331776  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
10  MoreViewController  Retain  7   2986161920  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
11  MoreViewController  Autorelease     2986163712  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
12  MoreViewController  Retain  8   2986166784  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
13  MoreViewController  Retain  9   2986367744  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
14  MoreViewController  Autorelease     2986369792  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
15  MoreViewController  Retain  10  2986371840  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection initWithCoder:]
16  MoreViewController  Release 9   2986498816  0x5fa5ee0   0   UIKit   -[UINib instantiateWithOwner:options:]
17  MoreViewController  Release 8   2986510848  0x5fa5ee0   0   UIKit   -[UINib instantiateWithOwner:options:]
18  MoreViewController  Release 7   2986524928  0x5fa5ee0   0   UIKit   -[UINib instantiateWithOwner:options:]
19  MoreViewController  Release 6   2986529792  0x5fa5ee0   0   UIKit   -[UINib instantiateWithOwner:options:]
20  MoreViewController  Retain  7   2986635008  0x5fa5ee0   0   Foundation  -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:]
21  MoreViewController  Retain  8   2986648832  0x5fa5ee0   0   Foundation  -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:]
22  MoreViewController  Release 7   2986650880  0x5fa5ee0   0   Foundation  -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:]
23  MoreViewController  Retain  8   2986679040  0x5fa5ee0   0   Foundation  -[NSArray(NSArray) initWithCoder:]
24  MoreViewController  Release 7   2986705920  0x5fa5ee0   0   UIKit   -[UINib instantiateWithOwner:options:]
25  MoreViewController  Retain  8   2986823936  0x5fa5ee0   0   Foundation  -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:]
26  MoreViewController  Retain  9   2986860800  0x5fa5ee0   0   Foundation  -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:]
27  MoreViewController  Release 8   2986900736  0x5fa5ee0   0   Foundation  -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:]
28  MoreViewController  Retain  9   2986923776  0x5fa5ee0   0   Foundation  -[NSArray(NSArray) initWithCoder:]
29  MoreViewController  Release 8   2986969856  0x5fa5ee0   0   UIKit   -[UINib instantiateWithOwner:options:]
30  MoreViewController  Retain  9   2987261952  0x5fa5ee0   0   UIKit   -[UINib instantiateWithOwner:options:]
31  MoreViewController  Release 8   2987425792  0x5fa5ee0   0   Foundation  -[NSKeyedUnarchiver dealloc]
32  MoreViewController  Release 7   2987520000  0x5fa5ee0   0   Foundation  -[NSKeyedUnarchiver dealloc]
33  MoreViewController  Release 6   2987686656  0x5fa5ee0   0   Foundation  -[NSKeyedUnarchiver dealloc]
34  MoreViewController  Release 5   2987698944  0x5fa5ee0   0   Foundation  -[NSKeyedUnarchiver dealloc]
35  MoreViewController  Release 4   2987756032  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection dealloc]
36  MoreViewController  Release 3   2987793920  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection dealloc]
37  MoreViewController  Release 2   2987811840  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection dealloc]
38  MoreViewController  Release 1   2987849984  0x5fa5ee0   0   UIKit   -[UIRuntimeConnection dealloc]
39  MoreViewController  Release 0   2994390016  0x5fa5ee0   0   Foundation  -[NSAutoreleasePool release]
40  MoreViewController  Zombie  -1  6312182784  0x5fa5ee0   0   UIKit   -[UIApplication sendAction:to:from:forEvent:]

我确实注意到了 -[NSAutoreleasePool release] 以前调用过 -[UIApplication sendAction:to:from:forEvent:] …那是我的问题吗?我如何解决这个问题?

再次感谢你的回答,每个人都会帮助你。

编辑4

输出来自 info malloc 命令 :

2010-09-17 19:41:57.305 <appname>[8440:207] *** -[MoreViewController performSelector:withObject:withObject:]: message sent to deallocated instance 0x63ae170
[Switching to process 8440]
(gdb) info malloc 0x63ae170
Alloc: Block address: 0x063ae170 length: 132
Stack - pthread: 0xa0541500 number of frames: 49
    0: 0x947170c3 in malloc_zone_calloc
    1: 0x9471701a in calloc
    2: 0x25cdb5b in _internal_class_createInstanceFromZone
    3: 0x25d07a6 in class_createInstance
    4: 0x23a3108 in +[NSObject(NSObject) allocWithZone:]
    5: 0x23a2f0a in +[NSObject(NSObject) alloc]
    6: 0x4a6039 in -[UIClassSwapper initWithCoder:]
    7: 0x1669c in _decodeObjectBinary
    8: 0x15809 in _decodeObject
    9: 0x4a5d77 in -[UIRuntimeConnection initWithCoder:]
   10: 0x4a62e5 in -[UIRuntimeEventConnection initWithCoder:]
   11: 0x1669c in _decodeObjectBinary
   12: 0x1746d in -[NSKeyedUnarchiver _decodeArrayOfObjectsForKey:]
   13: 0x17a9c in -[NSArray(NSArray) initWithCoder:]
   14: 0x1669c in _decodeObjectBinary
   15: 0x15809 in _decodeObject
   16: 0x4a5034 in -[UINib instantiateWithOwner:options:]
   17: 0x4a6eb5 in -[NSBundle(UINSBundleAdditions) loadNibNamed:owner:options:]
   18: 0x35c95f in -[UIViewController _loadViewFromNibNamed:bundle:]
   19: 0x35a675 in -[UIViewController loadView]
   20: 0x35a54f in -[UIViewController view]
   21: 0x36c73e in -[UITabBarController transitionFromViewController:toViewController:transition:shouldSetSelected:]
   22: 0x36b2b2 in -[UITabBarController transitionFromViewController:toViewController:]
   23: 0x36d08c in -[UITabBarController _setSelectedViewController:]
   24: 0x36cefb in -[UITabBarController _tabBarItemClicked:]
   25: 0x2b07f8 in -[UIApplication sendAction:to:from:forEvent:]
   26: 0x4ad2d0 in -[UITabBar _sendAction:withEvent:]
   27: 0x2b07f8 in -[UIApplication sendAction:to:from:forEvent:]
   28: 0x33bde0 in -[UIControl sendAction:to:forEvent:]
   29: 0x33e262 in -[UIControl(Internal) _sendActionsForEvents:withEvent:]
   30: 0x33bd97 in -[UIControl sendActionsForControlEvents:]
   31: 0x2b07f8 in -[UIApplication sendAction:to:from:forEvent:]
   32: 0x33bde0 in -[UIControl sendAction:to:forEvent:]
   33: 0x33e262 in -[UIControl(Internal) _sendActionsForEvents:withEvent:]
   34: 0x33ce0f in -[UIControl touchesEnded:withEvent:]
   35: 0x2d43d0 in -[UIWindow _sendTouchesForEvent:]
   36: 0x2b5cb4 in -[UIApplication sendEvent:]
   37: 0x2ba9bf in _UIApplicationHandleEvent
   38: 0x2d5e822 in PurpleEventCallback
   39: 0x245fff4 in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__
   40: 0x23c0807 in __CFRunLoopDoSource1
   41: 0x23bda93 in __CFRunLoopRun
   42: 0x23bd350 in CFRunLoopRunSpecific
   43: 0x23bd271 in CFRunLoopRunInMode
   44: 0x2d5d00c in GSEventRunModal
   45: 0x2d5d0d1 in GSEventRun
   46: 0x2beaf2 in UIApplicationMain
   47: 0x1a78 in main at /Users/Sean/Desktop/<appname>/main.m:13
   48: 0x1a09 in start

编辑5

我还没弄明白…有人能帮忙吗?

2 回复 | 直到 14 年前

Jerry Jones 14 年前

您之所以收到此消息,是因为要发送的对象showAbout:to不响应该选择器。要么你指向了错误的目标,要么你的目标的指针被更改了。

很难说没有看到更多的代码。如果您是在ib中创建按钮,可能没有正确连接插座。

编辑:根据新代码,您的moveViewController对象似乎没有正确保留。要获取有关您指定的实例的信息,可以像打开nszombieEnabled一样打开mallocstackloggingnocompact。当你得到错误时,你可以使用

malloc_历史实例\u地址

或

信息malloc实例地址

这是一篇非常适合这种调试的文章

http://www.friday.com/bbum/2010/01/10/using-malloc-to-debug-memory-misuse-in-cocoa/

esqew 14 年前

我没有找出原因,但是通过将视图移动到一个视图中解决了错误。 XIB .

无论如何,谢谢。