Show buttons randomly by pressing them

Question

I want to have six buttons in my project and want them to be always hidden except one. And when I press the button that is not hidden it should be hidden and another button should randomly appear and do the same. Would appreciate if someone could help me!!

Answer 1

Create six buttons in your Storyboard, add a tag to them and then create one Action outlet that you connect all buttons to and then do the following:

@IBAction func button_clicked(_ sender: AnyObject) {
    // generate a random number which is not the same as the tag that you 
    repeat{
        random = Int(arc4random_uniform(6) + 1)
    }
    while random == sender.tag

    // iterate through all subviews in your view to find all buttons
    for view in self.view.subviews{
        // make sure it´s a button
        if view.isKind(of: UIButton.self){
            // create a button from the view you're iterating to
            let button = view as! UIButton
            // if the button tag is equal to the random number you just created we want to show that button 
            if button.tag == random{
                button.isHidden = false
            }
            // else hide it
            else{
                button.isHidden = true
            }
        }
    }
}

Here is a sample project I created that does this that you can try. Make sure though to read the comments in the code above and understand what´s happening.