IPhone: Copy/Clone

Question

I want to copy or clone a object of my own written class. But if I call the copy function only the pointer were copied. So if I change the copied object the original object is changed, too.

Is there a way/function to really clone an object?

best regards Melanie

Answer 1

An object can be copied if its class adopts the NSCopying protocol and implements its single method, copyWithZone:.

See Object copying

---

- (id)copyWithZone:(NSZone *)zone{
    MyClass *copy = [[[self class] allocWithZone: zone] init];
    [copy setProperty1:[self property1]];
    return copy;
}