Question

I hope to check the type of an object, for NSString:

[theObject isKindOfClass:[NSString class]]

it works, but for NSInteger

[theObject isKindOfClass:[NSInteger class]]

will report error

Welcome any comment

Answer 1

Use the NSNumber class:

if ([obj isKindOfClass:[NSNumber class]]) { ... }

NSNumber Inherits from NSValue : NSObject

NSInteger
Used to describe an integer.

#if __LP64__ || TARGET_OS_EMBEDDED || TARGET_OS_IPHONE || TARGET_OS_WIN32 || NS_BUILD_32_LIKE_64
typedef long NSInteger;
#else
typedef int NSInteger;
#endif