How do I access an BOOL type property?

Question

I have an class, and in the header I define this:

@interface MyViewController : UIViewController {
    BOOL blackBackground;
}
@property(nonatomic, assign) BOOL blackBackground;

In the implementation I have the @synthesize for blackBackground.

Then, I instantiate this object and do:

[myViewController setBlackBackground:YES];

now that boolean should have the value YES (or true ;) ). But then, I check:

if ([myViewController blackBackground]) {
NSLog(@"yep, it's true");
}

however, it doesn't seem to respond or return anything, either the value doesn't get set or I can't call/check it. Any idea what's wrong there?

Answer 1

I think it is isBlackBackground or of course you can use self.blackBackground

Answer 2

Are you sure you are actually using the above code? It has syntax errors and will not compile, so it is entirely possible you are not seeing that code executed because you are running old copies of the code.

The issue that you cannot declare a scalar property to have a any sort of retain,assign,copy semantic, it will result in a compile error. You should change:

@property(nonatomic, assign) BOOL blackBackground;

to

@property(nonatomic) BOOL blackBackground;