Question

I’m new at OS X development, I’ve been having a problem getting a delegate callback and I somehow suspect that it might be a memory problem. I have an NSViewController. In it’s init method I am setting up a custom NSObject as so:

        MyObject *aManager = [[MyObject alloc] initManager];
    __theManager = aManager;
    self.theManager.delegate = self; 
    [aManager release];

the delegate I’ve setup as nonatomic, assign. Looking at the breakpoints I should be seeing the callback in my view controller but this never happens. Any ideas?

Answer 1

__theManager = aManager; should be self.theManager = aManager;, assuming theManager is a retained property. The problem you have is that alloc] init]; gives aManager a retain count of +1. __theManager = aManager; does not increase that count, as the iVar is set directly. When you release it, the retain count becomes 0, and so it is deallocated.