应用程序崩溃UIButton点击:iphone

Question

我有一个View base iphone应用程序
我添加了一个NSObject类AddNewContact并在IB中获取它的对象

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

我将UIButton操作绑定到abc:单击按钮应用程序崩溃,甚至NSLog也没有记录,
但如果我将按钮操作绑定到其他类函数,那么它工作正常

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'

谁能告诉我哪里错了

谢谢
Amit Battan

Answer 1

你将发布你的AddNewContact视图控制器,视图仍然在superview中但viewController被释放,该按钮试图在AddNewContact控制器上调用'abc',它不再存在...