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由于未捕获的异常“ NSInvalidArgumentException”而终止应用程序，原因：“-[NSDecimalNumber objectAtIndex：]

[英]Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSDecimalNumber objectAtIndex:]

原文 2014-09-22 07:34:14 8 1 iphone

Hi I am getting this exception during execution of application. 嗨，我在执行应用程序时遇到此异常。

I have one service through that I want to insert device information to the sever. 我有一项服务，希望将设备信息插入服务器。 For this I have taken NSDictionary and I keep the value with following datatype like NSString, and one Long value. 为此，我采用了NSDictionary，并使用以下数据类型（如NSString）和一个Long值来保留该值。 once I try to insert the data it give the following error msg. 一旦我尝试插入数据，它将给出以下错误消息。

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSDecimalNumber objectAtIndex:] 由于未捕获的异常“ NSInvalidArgumentException”而终止应用程序，原因：“-[NSDecimalNumber objectAtIndex：]

Please help me on that thanks in Advance. 请提前帮助我。

1 个解决方案

I think you are trying to insert a C type in the dictionary. 我认为您正在尝试在字典中插入C类型。 NSDictionaries can only contain objects ( https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSDictionary_Class/Reference/Reference.html ): NSDictionaries只能包含对象（ https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSDictionary_Class/Reference/Reference.html ）：

(void)setValue:(id)value forKey:(NSString *)key <-- the value must be an object （void）setValue：（id）value forKey：（NSString *）key <-该值必须是一个对象

To insert the long value as an object, you can make a NSNumber *n = [NSNumber numberWithLong:longValue]; 要将long值插入为对象，可以创建一个NSNumber * n = [NSNumber numberWithLong：longValue]; When you need to read it back, you can have [n longValue]. 当您需要将其读回时，可以具有[n longValue]。