Objective-C: How to cast a boolean as an object for use with NSKeyedArchiver

Question

I need to cast a boolean as an object, or NSKeyedArchiver throws a memory access error. What's the best way to do this?

Answer 1

相反，encodeBool：forKey：呢？

Answer 2

Further to NSD's answer, in a general sense: Cocoa often requires actual objects for various methods. When the type you have is an ordinal type, such as int , BOOL , or float , you can wrap it in an NSNumber . For other types, you may need to wrap it in an NSValue or NSData (which is essentially an arbitrary binary buffer of a given length).