Question

I have an NSMutableArray called george. It has NSInteger values inside: 12, 23, 54, 34, 45.
Now I have a string called unitID its made of a letter and a number eg. t00, e01, t02, e03, t04

what I’m doing is:

-(int)getSpawnAmount:(NSString *)unitID
{
typeString = [unitID substringWithRange:NSMakeRange(0,1)];
numberString = [unitID substringWithRange:NSMakeRange(1,2)];


    return [[george objectAtIndex:[numberString integerValue]] integerValue];
} 

I know that objectAtIndex returns an “id” and im not sure whether im doing it the right way to get the integer values.

Anyway my question is how do I get NSInteger values from my NSMutableArray using objectAtIndex?

Thanks in advance.

My array was in another class and instead of referencing it I was creating a new NSMutableArray, which was blank. My code works fine now. Thanks for your answers.

Answer 1

The safe way could be to use reflection on type id; so you will be able to put some errorhandling inside.
Otherwise you could cast type id to a NSNumber and so to “any” other type, e.g. int.