iPhone - Crash using addObject on a NSMutableArray

Question

I have a problem here. Or Maybe I\'m really tired...

I have a class :

@interface THECLASS : UIViewController  {
    NSMuta         


        

Answer 1

Answer is buried in the comments to the "accepted" answer. I came here from Google and it fixed my problem, so ... to make it clearer, based on @e.James's comment:

When you implement the "NSCopying" protocol, and implement "copyWithZone", you MUST NOT use "copy" on your internal mutable arrays - this DOES NOT copy the array (instead, it creates a non-mutable copy).

e.g. from my own code:

// Class: MyClass

@property(nonatomic, retain) NSMutableArray* mutArray;

-(id)copyWithZone:(NSZone *)zone
{
    MyClass* other = [[MyClass alloc] init];

//  other.mutArray = [self.mutArray copy]; // WRONG!
    other.mutArray = [self.mutArray mutableCopy]; // CORRECT!

    return other;
}