What's the correct way to store `Class` object into `NSMutableArray`?

Question

The type Class is not look Objective-C type. So storing it into NSMutableArray looks need special care. What's the correct way to do this?

Answer 1

Class objects are just like other objects. You can definitely store them in a NSMutableArray or do things with them as you would normally do with objects (e.g. call the methods of the root class NSObject, like description and performSelector..., etc.) Note that the type Class is a generic type for pointers to class objects, similar to how the type id is a generic type for pointers to objects. So a value of type Class can also be passed as an id.

NSMutableArray *array = [[NSMutableArray alloc] init];
[array addObject:[yourObject class]];
[array addObject:[anotherObject class]];

//Later in your code.

Class yourObject = [array objectAtIndex:0UL];

Answer 2

I dont know the "correct way" but can't you store it as a string?

NSMutableArray *array = [[NSMutableArray alloc] init];
[array addObject:NSStringFromClass([yourObject class])];
[array addObject:NSStringFromClass([anotherObject class])];

//Later in your code.

id yourObject = NSClassFromString([array objectAtIndex:0UL]);

Hope it might help.