Objective-C: Creating Instance from Class Reference

Question

You can create a class reference with the following code:

Class M = [NSMutableString class]; // NSMutableString (for example).

You can then call methods on that saved class with code like this:

[M string];

But can you create instances, from that class name (I know the following doesn't work)?

M *newInstance;

Joe · Accepted Answer · 2011-08-16 19:17:12Z

20

You can allocate a new instance of the class like this

id instance = [[M alloc] init];

+alloc is a class method just like string is in your example so the rules are the same.

answered Aug 16, 2011 at 19:17

Joe

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3 Comments

Alex Gray Over a year ago

This creates a generic, id object.. How can you instantiate a "fully qualified", dot-addressable instance of the class. That is the question..

Joe Over a year ago

First, that was not the question, the question was can you create instances of the class which this answers. Once you start using reflection you can not do what you are asking unless you cast it to its fully qualified type.

user25 Over a year ago

and how to call methods of this instance?

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