[英]NSInvalidArgumentException -[__NSCFString unsignedLongLongValue]: unrecognized selector sent to instance
While using JSONModel
to parse my models I found this Exception. 在使用
JSONModel
解析我的模型时,我发现了这个异常。
NSInvalidArgumentException -[__NSCFString unsignedLongLongValue]: unrecognized selector sent to instance 0x1782210c0
The problem got place inside JSONModel.m
because it depends on [NSObject setValue:forKey:]
. 问题出现在
JSONModel.m
因为它依赖于[NSObject setValue:forKey:]
。
I found a way to easily reproducing it. 我找到了一种轻松复制它的方法。
@property NSUInteger uintegerProperty;
[...]
[self setValue:@"1" forKey:@"uintegerProperty"];
This works on 32 bits because setValue
ends up calling longLongVaue
defined in NSString
, but in the case of 64 bits it's calling unsignedLongLongValue
which is undefined in NSString
. 这适用于32位,因为
setValue
最终调用在NSString
定义的longLongVaue
,但在64位的情况下,它调用unsignedLongLongValue
,这在NSString
中是未定义的。
In my particular case, the problem is this enum
used in a model. 在我的特定情况下,问题是模型中使用的这个
enum
。
typedef NS_ENUM(NSUInteger, kNotificationTypeEnum)
{
kNotificationTypeResponse = 1,
kNotificationTypeAlert = 2
};
What is the best way to handle this situation? 处理这种情况的最佳方法是什么?
Stack trace 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)
The finish solution to solve this problem: 解决此问题的完成解决方案:
@implementation NSString (UnsignedLongLongValue)
- (unsigned long long)unsignedLongLongValue {
return self.longLongValue;
}
@end
Thanks! 谢谢!
The easiest way is probably to just use a shorter integer type for the property, like uint32_t. 最简单的方法可能是为属性使用较短的整数类型,如uint32_t。 The second easiest would be to add a category on NSString that provides the missing method.
第二个最简单的方法是在NSString上添加一个提供缺失方法的类别。
We had a similar error with iPhone 5
except that instead of unsignedLongLongValue
we got longValue
error. 我们在
iPhone 5
遇到了类似的错误,除了我们得到longValue
错误而不是unsignedLongLongValue
。 So we have used same category approach with following code: 所以我们使用了相同的类别方法和以下代码:
@implementation NSString (LongValue)
- (long)longValue {
return (long) self.longLongValue;
}
@end
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