在使用JSONModel解析我的模型时，我发现了此异常。
NSInvalidArgumentException -[__NSCFString unsignedLongLongValue]: unrecognized selector sent to instance 0x1782210c0
这个问题出现在
JSONModel.m内部，因为它取决于[NSObject setValue:forKey:]。我找到了一种轻松重现它的方法。
@property NSUInteger uintegerProperty;
[...]
[self setValue:@"1" forKey:@"uintegerProperty"];
这适用于32位，因为
setValue最终调用了longLongVaue中定义的NSString，但是在64位的情况下，它调用了unsignedLongLongValue中未定义的NSString。在我的特定情况下，问题是模型中使用了此
enum。typedef NS_ENUM(NSUInteger, kNotificationTypeEnum)
{
kNotificationTypeResponse = 1,
kNotificationTypeAlert = 2
};
处理这种情况的最佳方法是什么？
堆栈跟踪
2014-12-31 17:48:43.789 mobile-iOS[17851:613] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFConstantString unsignedLongLongValue]: unrecognized selector sent to instance 0x10f1feeb0'
*** First throw call stack:
(
0 CoreFoundation 0x0000000111b99495 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x00000001118f099e objc_exception_throw + 43
2 CoreFoundation 0x0000000111c2a65d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x0000000111b8ad8d ___forwarding___ + 973
4 CoreFoundation 0x0000000111b8a938 _CF_forwarding_prep_0 + 120
5 Foundation 0x000000010ff2449b _NSSetUnsignedLongLongValueForKeyWithMethod + 63
6 Foundation 0x000000010fed5530 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 259
7 mobile-iOS 0x000000010ee1834c -[AppDelegate application:didFinishLaunchingWithOptions:] + 140
8 UIKit 0x000000011051b3d9 -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 264
9 UIKit 0x000000011051bbe1 -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 1605
10 UIKit 0x000000011051fa0c -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 660
11 UIKit 0x0000000110530d4c -[UIApplication handleEvent:withNewEvent:] + 3189
12 UIKit 0x0000000110531216 -[UIApplication sendEvent:] + 79
13 mobile-iOS 0x000000010eedf48b -[MMApplication sendEvent:] + 331
14 UIKit 0x0000000110521086 _UIApplicationHandleEvent + 578
15 GraphicsServices 0x0000000112df671a _PurpleEventCallback + 762
16 GraphicsServices 0x0000000112df61e1 PurpleEventCallback + 35
17 CoreFoundation 0x0000000111b1b679 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 41
18 CoreFoundation 0x0000000111b1b44e __CFRunLoopDoSource1 + 478
19 CoreFoundation 0x0000000111b44903 __CFRunLoopRun + 1939
20 CoreFoundation 0x0000000111b43d83 CFRunLoopRunSpecific + 467
21 UIKit 0x000000011051f2e1 -[UIApplication _run] + 609
22 UIKit 0x0000000110520e33 UIApplicationMain + 1010
23 mobile-iOS 0x000000010ee2af23 main + 243
24 libdyld.dylib 0x000000011230b5c9 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
Signal: 6 (signal SIGABRT)
最佳答案
最简单的方法可能是对该属性使用较短的整数类型，例如uint32_t。第二个最简单的方法是在提供缺少方法的NSString上添加一个类别。
关于ios - NSInvalidArgumentException-[__ NSCFString unsignedLongLongValue] : unrecognized selector sent to instance，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/27725695/