Assuming you are using Storyboard for your layout, I have written a possible solution below. Basically, you keep a running total of aScore and cScore and pass the running totals to the next view controller's aScore and cScore variables using prepareForSegue. I have created a function called proceedToNextLevel which is called whenever you want to proceed to the next level.
You level 1 View Controller would look something like this:
class Level1ViewController: UIViewController {
var cScore = 0
var aScore = 0
//call this function when you want to proceed to level 2, connect a segue between your level 1 view controller and level 2 view controller give the segue an identifier "ProceedToLevel2Segue"
func proceedToNextLevel() {
performSegue(withIdentifier: "ProceedToLevel2Segue", sender: nil)
}
//pass the accumulated aScore and cScore for level 1 to level 2's aScore and cScore
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let destinationVC = segue.destination as! Level2ViewController
destinationVC.cScore = self.cScore
destinationVC.aScore = self.aScore
}
@IBAction func buttonCorrect(_ sender: UIButton)
{
cScore +=1
aScore +=1
correctScore.text = NSString(format: "%i", cScore) as String
attemptScore.text = NSString(format: "%i", aScore) as String
}
@IBAction func buttonIncorrect(_ sender: UIButton)
{
cScore +=0
aScore +=1
correctScore.text = NSString(format: "%i", cScore) as String
attemptScore.text = NSString(format: "%i", aScore) as String
}
}
Your level 2 view controller's aScore and cScore will be initialized by the prepareForSegue method in the Level1ViewController to the totals you had in Level 1. If they are not initialized they default to the values of zero given in Level 2 View Controller. I have kept the logic that increments aScore and cScore the same in the level 2 view controller.
class Level2ViewController: UIViewController {
//these will be initialized to the running total of aScore and cScore from level 1
var cScore: Int!
var aScore: Int!
//proceed to level 3
func proceedToNextLevel() {
performSegue(withIdentifier: "ProceedToLevel3Segue", sender: nil)
}
//the running total for aScore and cScore is passed to level 3
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let destinationVC = segue.destination as! Level3ViewController
destinationVC.cScore = self.cScore
destinationVC.aScore = self.aScore
}
//your scoring logic
@IBAction func buttonCorrect(_ sender: UIButton)
{
cScore +=1
aScore +=1
correctScore.text = NSString(format: "%i", cScore) as String
attemptScore.text = NSString(format: "%i", aScore) as String
}
@IBAction func buttonIncorrect(_ sender: UIButton)
{
cScore +=0
aScore +=1
correctScore.text = NSString(format: "%i", cScore) as String
attemptScore.text = NSString(format: "%i", aScore) as String
}
}
You could then pass the final aScore and cScore variables to the final view controller using the same segue technique and display your chart.
NOTE: If you wish to persist the data, you could use a local database like Realm or Core Data to save the aScore and cScore. You could then pass a primary id of the saved object as an Int between the view controllers in the prepareForSegue method instead of aScore or cScore and retrieve the scores in the next view controller using the primary id.
