Enums 如何将typedef枚举转换为NSNumber？

typedef enum

的每个值是否都被视为

int

例如，给定以下

typedef enum

：

// UIView.h

typedef enum {
    UIViewAnimationCurveEaseInOut,
    UIViewAnimationCurveEaseIn,
    UIViewAnimationCurveEaseOut,
    UIViewAnimationCurveLinear
} UIViewAnimationCurve;

如何知道使用哪种方法创建

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);

我认为

+[NSNumber numberwhithint::

是正确的方法，因为使用它。例如：

[NSNumber numberWithInt:UIViewAnimationCurveLinear]

但是，如果

+[NSNumber numberwhithint:

是正确的，那么为什么呢

对于按位

枚举

，例如：

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

---

[NSNumber numberWithInt:your_enum_int_变量]

现在可以使用现代语法：

---

@（UIViewAnimationCurveLinear）

你真是棒极了！谢谢你。

[NSNumber numberWithUnsignedInteger:UIViewAutoresizingNone]