Cómo convertir typedef enum a NSNumber?

Question

1. ¿Cada valor de typedef enum se trata como int?

   por ejemplo, dada la siguiente typedef enum:

   // UIView.h 
   
   typedef enum { 
       UIViewAnimationCurveEaseInOut, 
       UIViewAnimationCurveEaseIn, 
       UIViewAnimationCurveEaseOut, 
       UIViewAnimationCurveLinear 
   } UIViewAnimationCurve; 
   

   ¿Cómo sé qué método utilizar para crear un NSNumber?

   + (NSNumber *)numberWithShort:(short)value; 
   + (NSNumber *)numberWithUnsignedShort:(unsigned short)value; 
   + (NSNumber *)numberWithInt:(int)value; 
   + (NSNumber *)numberWithUnsignedInt:(unsigned int)value; 
   + (NSNumber *)numberWithLong:(long)value; 
   + (NSNumber *)numberWithUnsignedLong:(unsigned long)value; 
   + (NSNumber *)numberWithLongLong:(long long)value; 
   + (NSNumber *)numberWithUnsignedLongLong:(unsigned long long)value; 
   + (NSNumber *)numberWithInteger:(NSInteger)value NS_AVAILABLE(10_5, 2_0); 
   + (NSNumber *)numberWithUnsignedInteger:(NSUInteger)value NS_AVAILABLE(10_5, 2_0); 
   

   creo +[NSNumber numberWithInt:] es el método correcto de usar debido a la accepted answer to Best way to implement Enums with Core Data la usa. Ej .:

   [NSNumber numberWithInt:UIViewAnimationCurveLinear] 
   

   Pero, si +[NSNumber numberWithInt:] es correcto, entonces ¿por qué?

2. Para un bit a bit enum, por ejemplo .:

   enum { 
       UIViewAutoresizingNone     = 0, 
       UIViewAutoresizingFlexibleLeftMargin = 1 << 0, 
       UIViewAutoresizingFlexibleWidth  = 1 << 1, 
       UIViewAutoresizingFlexibleRightMargin = 1 << 2, 
       UIViewAutoresizingFlexibleTopMargin = 1 << 3, 
       UIViewAutoresizingFlexibleHeight  = 1 << 4, 
       UIViewAutoresizingFlexibleBottomMargin = 1 << 5 
   }; 
   typedef NSUInteger UIViewAutoresizing; 
   

   supongo que +[NSNumber numberWithUnsignedInteger:] es el método correcto de usar porque no es una explícita NSUInteger después typedef. ¿Correcto? Ej .:

   [NSNumber numberWithUnsignedInteger:UIViewAutoresizingNone] 
   

Answer 1

sintaxis moderna Hoy en día se puede utilizar:

@(UIViewAnimationCurveLinear)

Answer 2

[NSNumber numberWithInt: your_enum_int_variable];