Array of enums - convert to NSArray

Question

Having

enum {MyA, MyB, Null};
typedef NSNumber myEnum;

Or

typedef enum {MyA, MyB, Null} myEnum;

1) How do

Answer 1

Basically, you need to wrap the value in a NSNumber object.

#define INT_OBJ(x) [NSNumber numberWithInt:x]

[array addObject:INT_OBJ(MyA)];

And there was nothing wrong with your other array, you just should have defined it like this:

typedef enum {MyA, MyB, Null} myEnum;

myEnum values[] = { MyA, MyB };

The problem was that you defined myEnum as a NSNumber, which is not equal to an enum value (int).

Answer 2

In Obj C:

enumArray = @[@(enum1),@(enum2)];

In Swift:

enumArray = NSArray(objects: enum1.rawValue, enum2.rawValue);

Answer 3

Try to do it this way :

typedef enum { MyA, MyB, Null } myEnum;

Then, to create an array, wrap the numbers into NSNumbers objects :

NSArray *a = [NSArray arrayWithObjects:[NSNumber numberWithInteger:MyA],
                                       [NSNumber numberWithInteger:MyB],
                                       nil];