incrementing points going back to 0 swift - swift

Question

I have added a button, that adds points to a label.
Everything works fine, and the label is then persisted into core data and appears in a tableViewCell.
When I get back to my detailsVC, I get my label with the persisted number, but when I click on the button again to increment the points, the label goes back to zero.
Here's a part of my code:
import UIKit
import CoreData
class GoalDetailsVC: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
// IBOutlets:
#IBOutlet weak var titleTF: UITextField!
#IBOutlet weak var detailsTextView: UITextView!
#IBOutlet weak var pointsLabel: UILabel!
#IBOutlet weak var dateOfEntry: UILabel!
#IBOutlet weak var thumbImage: UIImageView!
// properties
var currentScore = 0
var goalToEdit: Goal? // goalToEdit is now an optional, and it needs to be unwrapped when used.
var imagePicker: UIImagePickerController!
override func viewDidLoad() {
super.viewDidLoad()
if let topItem = self.navigationController?.navigationBar.topItem {
topItem.backBarButtonItem = UIBarButtonItem(title: "", style: UIBarButtonItemStyle.plain, target: nil, action: nil)
}
// now we need to say that if there is a goal to edit ( not equal to nil), then we load the Goal data with the loadGoalData() function.
if goalToEdit != nil {
loadGoalData()
}
imagePicker = UIImagePickerController()
imagePicker.delegate = self
}
// when button is pressed, I need to
// 1 : add a point to the pointsLabel
// 2 : put the current date to the dateLabel
// 3 : persist the new points and date labels.
#IBAction func plusOneBtnPressed(_ sender: UIButton) {
currentScore += 1
pointsLabel.text = "\(currentScore)"
}
#IBAction func minusOneBtnPressed(_ sender: Any) {
}
#IBAction func savePressed(_ sender: Any) {
var goal: Goal!
let picture = Image(context: context) // Image = Entity
picture.image = thumbImage.image // image = attribute
if goalToEdit == nil {
goal = Goal(context: context)
} else {
goal = goalToEdit
}
goal.toImage = picture
// this is unwrapping because the original goalToEdit is an optional.
if let title = titleTF.text {
goal.title = title
}
// we saveed, or persisted the TITLE
if let points = pointsLabel.text {
goal.plusOnes = (points as NSString).intValue
}
// we saveed, or persisted the POINTS
if let details = detailsTextView.text {
goal.details = details
}
// we saved, or persisted the DETAILS
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "EEEE MMM d yyyy"
if let date = dateFormatter.date(from: dateFormatter.dateFormat) {
goal.lastEntry = date as NSDate
}
// we saved, or persisted the DATE
ad.saveContext()
_ = navigationController?.popViewController(animated: true)
}
func loadGoalData() {
if let goal = goalToEdit {
titleTF.text = goal.title
pointsLabel.text = "\(goal.plusOnes)"
detailsTextView.text = goal.details
dateOfEntry.text = (String(describing: goal.lastEntry))
thumbImage.image = goal.toImage?.image as? UIImage
}
}

Answer 1

When you get the persisted number you should also set currentScore to that value (if greater than 0). I believe currently you only set it to 0 that's why the incrementation starts over.