constructor in objective c

Question

HI, I have create my iPhone apps but i have a problem. I have a classViewController where i have implemented my program. I must alloc 3 NSMutableArray but i don't want do it in a grapich methods. There isn't a constructor like java for my class? Thanks so much and sorry for my english XP

// I want put it in a method like constructor java

arrayPosizioni = [[NSMutableArray alloc]init];
nomePosizioneCorrente = [NSString stringWithFormat:@"noPosition"];

Answer 1

Yes, there is an initializer. It's called -init, and it goes a little something like this:

- (id) init {
  self = [super init];
  if (self != nil) {
    // initializations go here.
  }
  return self;
}

Edit: Don't forget -dealloc, tho'.

- (void)dealloc {
  // release owned objects here
  [super dealloc]; // pretty important.
}

As a side note, using native language in code is generally a bad move, you usually want to stick to English, particularly when asking for help online and the like.