How to create property for BOOL Objective-C

Question

Code:

@property (nonatomic, retain) BOOL val;

Error:

Property with ‘retain(or Strong)’ attribute must be of object type

I want to use this bool object in another class. I am creating it in .h file

Tanguy G. · Accepted Answer · 2016-04-06T14:35:42.270

3

BOOL is a primitive type (thus not a pointer, so no memory management).

You declare the property this way :

@property (nonatomic) BOOL val;

(you can also explicitly write assign instead of strong/retain)

edited Apr 06 '16 at 14:35

answered Apr 06 '16 at 12:15

Tanguy G.

1

Note that this is true for all primitive types: properties for integers, floats, structs and many more need to be declared in this way. – Aaganrmu Apr 06 '16 at 12:18
Thanks it solved.. – Smit Saraiya Apr 06 '16 at 12:19
Your last sentence in the answer makes no sense. It *has* to be `assign`. In fact, `assign` is the default for non-object properties. – rmaddy Apr 06 '16 at 14:15
You are right, my sentence was not clear, I updated my answer. – Tanguy G. Apr 06 '16 at 14:36

score 2 · Answer 2 · answered Apr 06 '16 at 12:14

2

Use the assign attribute, which is the default for BOOL anyway:

@property (nonatomic, assign) BOOL val;

answered Apr 06 '16 at 12:14

trojanfoe

2 Answers2