Generate classes dynamically

Question

Is it possible to create classes dynamically in Objective-C?

I want to do something like this, but dynamically:

Mission *mission = [[Mission alloc]init];
        mission.Id = [modelObject Id];
        mission.EntityState = [modelObject EntityState];
        mission.Description = [modelObject Description];

So I tried this

id clonedobject = [[[modelObject class] alloc]init];
for (NSString *key in dic) 
    {
        [[clonedobject valueForKey:[dic objectForKey:key]] addObject:[modelObject valueForKey:[dic objectForKey:key]]];
    }

But with this code, I cannot reach for example the id with clonedobject.Id. It says "Property ID not found on object of type id.

Is there a way to do something like this?

[modelObject class] *clonedobject = [[[modelObject class] alloc]init]

See: http://stackoverflow.com/questions/1174093/create-objective-c-class-instance-by-name — Kai Huppmann, Jan 17 '12 at 09:24

score 6 · Accepted Answer · answered Jan 17 '12 at 09:25

6

please refer to the given link .. Creating class at runtime

answered Jan 17 '12 at 09:25

Ali3n

1,244
6
10

+1 for the link. But you should consider adding the essence of that article over here. (Just for a quick reference) – viral Apr 25 '13 at 12:11

score 0 · Answer 2 · answered Apr 25 '13 at 23:34

It is possible to register classes at runtime, but this is not what you're looking for.

Even if you could add classes at runtime, it would not help you with the compile-time type of the variable. i.e. You would still not know the type at compile-time, and thus you still cannot use properties using dot notation like clonedobject.id.

How do you know that this object has a property called id? It seems like you already know what type it is.

Generate classes dynamically

2 Answers2