应用程序崩溃：iphone

Question

我有一个观点的基础iPhone应用程序
我添加了一个NSObject类AddNewContact，并采取了对象IB

AddNewContact.h

#import <Foundation/Foundation.h> 

@interface AddNewContact : NSObject { 
} 
-(IBAction)abc:(id)sender; 
@end 

AddNewContact.m

#import "AddNewContact.h" 

@implementation AddNewContact 

-(IBAction)abc:(id)sender{ 
    NSLog(@"this is test"); 
} 
@end 

我绑定一个UIButton的行动为abc：单击按钮时应用程序崩溃，甚至的NSLog还没有登录
但如果我绑定按钮操作的其他类函数，那么好的工作

崩溃日志

2011-06-08 15:40:30.368 myApp[5466:207] -[NSCFString abc:]: unrecognized selector sent to instance 0x6b7b1c0 
2011-06-08 15:40:30.416 myApp[5466:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSCFString abc:]: unrecognized selector sent to instance 0x6b7b1c0' 
*** Call stack at first throw: 
(
    0 CoreFoundation      0x02ad9b99 __exceptionPreprocess + 185 
    1 libobjc.A.dylib      0x02c2940e objc_exception_throw + 47 
    2 CoreFoundation      0x02adb6ab -[NSObject(NSObject) doesNotRecognizeSelector:] + 187 
    3 CoreFoundation      0x02a4b2b6 ___forwarding___ + 966 
    4 CoreFoundation      0x02a4ae72 _CF_forwarding_prep_0 + 50 
    5 UIKit        0x0039e7f8 -[UIApplication sendAction:to:from:forEvent:] + 119 
    6 UIKit        0x00429de0 -[UIControl sendAction:to:forEvent:] + 67 
    7 UIKit        0x0042c262 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527 
    8 UIKit        0x0042ae0f -[UIControl touchesEnded:withEvent:] + 458 
    9 UIKit        0x003c23d0 -[UIWindow _sendTouchesForEvent:] + 567 
    10 UIKit        0x003a3cb4 -[UIApplication sendEvent:] + 447 
    11 UIKit        0x003a89bf _UIApplicationHandleEvent + 7672 
    12 GraphicsServices     0x0306a822 PurpleEventCallback + 1550 
    13 CoreFoundation      0x02abaff4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52 
    14 CoreFoundation      0x02a1b807 __CFRunLoopDoSource1 + 215 
    15 CoreFoundation      0x02a18a93 __CFRunLoopRun + 979 
    16 CoreFoundation      0x02a18350 CFRunLoopRunSpecific + 208 
    17 CoreFoundation      0x02a18271 CFRunLoopRunInMode + 97 
    18 GraphicsServices     0x0306900c GSEventRunModal + 217 
    19 GraphicsServices     0x030690d1 GSEventRun + 115 
    20 UIKit        0x003acaf2 UIApplicationMain + 1160 
    21 myApp       0x00001fa4 main + 102 
    22 myApp       0x00001f35 start + 53 
) 
terminate called after throwing an instance of 'NSException' 

谁能告诉我在哪里，我错了

感谢
阿米特Battan

Answer 1

您将发布您的AddNewContact视图控制器，该视图仍处于超视图中，但viewController已发布，该按钮尝试在AddNewContact控制器上调用'abc'，该控制器不再存在...