simple dice app - going in chronological order instead of random one (Xcode - Swift)

Question

what I need to change in this piece of code in Xcode(Swift) to make the dices go chronologically from 1 to 6 (every time I press the button +1)and over again instead of going randomly as it is now ?

Answer 1

Change what you have to the following:
** Keep line with let diceArray as is! **

class ViewController: UIViewController {
  @IBOutlet weak var diceImageView1: UIImageView!
  
  let diceArray = [1,2,3,4,5,6]; /* <- use what you have already
  
  @IBAction func rollButtonPressed(_ sender: UIButton) {
    if(typeof(diceImageView1.image)=="undefined") diceImageView1.image=null;
    switch(diceImageView1.image) {
      case diceArray[0]: diceImageView1.image = diceArray[1]; break;
      case diceArray[1]: diceImageView1.image = diceArray[2]; break;
      case diceArray[2]: diceImageView1.image = diceArray[3]; break;
      case diceArray[3]: diceImageView1.image = diceArray[4]; break;
      case diceArray[4]: diceImageView1.image = diceArray[5]; break;
      default: diceImageView1.image = diceArray[0];
    }
  }
}

We are checking if(typeof(diceImageView1.image)=="undefined") because I don't know how the code works, so, just to be sure, we set diceImageView1.image=null;.
At first run, diceImageView1.image shouldn't be equal to any dice side, so default will set it to [0] which is the dice face with 1 on it.
Consecutive runs will switch to the next one: [0](1) to [1](2) through [4](5) to [5](6).
Once it's at [5](6), there is no case for that, so default, as above, will set it to [0](1).