Question

i get the signal error EXC_BAD_ACCESS when trying to retrieve the return output from the randomBallPick method, i probably do it wrong.

NSString *temp = [self randomBallPick];
upBall1.image = [UIImage imageNamed:temp];

Answer 1

Array (containers) retain/release items that are added/removed.

The object will receive release when it’s removed from container with removeObjectAtIndex: so you need to retain it before it is removed and possibly autorelease since you are returning it from your method.

NSString * chosenFilename =
          [[[imageArray objectAtIndex:chosen] retain] autorelease];
[imageArray removeObjectAtIndex:chosen];
return chosenFilename;