CODEWITHSUNDEEP
iosobjective-csubclassinstance-variables
rizzes
rizzes

Reputation: 1542

Objective-C: Grant Subclass Private Variable Access

I have a class A that has an instance variable NSMutableArray *_onlyVisibleToSubclassesArray. I would like to grant subclass B access to this variable but not any other class C which does not subclass A.

Upvotes: 1

Views: 690

Answers (2)

Chuck
Chuck

Reputation: 237030

This is what @protected is, which is the default. Just declare an instance variable in the interface and it will be visible to subclasses and not to sibling classes.

Upvotes: 2

rizzes
rizzes

Reputation: 1542

A.h

@interface A : NSObject {
    NSMutableArray *_onlyVisibleToSubclassesArray
}

B.h

#import "A.h"

@interface B : A

In B.m I have access to _onlyVisibleToSubclassesArray

Another class C that imports A.h, cannot access _onlyVisibleToSubclassesArray

Upvotes: 0

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