Question

I have a NSString with numbers e.g.”1,3,6,7″
and a global NSMutableArray that is initialized elsewhere.

Now to get the numbers from the string to the Array I thought something like this would work:

[myMArray arrayByAddingObjectsFromArray:([myString componentsSeparatedByString:@","])];

but it doesn’t work. Can someone explain me why?

Answer 1

The method arrayByAddingObjectsFromArray returns a new, autoreleased, NSArray object. It looks like you’re assuming it adds objects to an existing NSMutableArray. You should use the addObjectsFromArray:(NSArray*) method instead.