CODEWITHSUNDEEP
swiftuserdefaults
user7299543
user7299543

Reputation: 121

Issues with Setting UserDefaults in Swift 3

Apologize if this is a beginner question, but I am having trouble finding a solution online. Most of the help I could find did not solve my problem and were for a previous version of Swift.

I would like to keep a cumulate score of a player in a game. It would be zero the first time they logged in, but everytime they played it would increase depending on how many rounds they played.

I've tried a few arrangements, but right now in my AppDelegate file I have:

UserDefaults.standard.set(Int(100),forKey:"TotalPoints")

Then, in other parts of the GameScene when the player advances I have:

let defaults=UserDefaults.standard
var CurrentExtras=defaults.integer(forKey: "TotalPoints")
CurrentExtras = CurrentExtras+100
UserDefaults.standard.set(Int(CurrentExtras),forKey:"TotalPoints")

This works for in game updating, but once I close the app and reboot it, then it goes back to the initial value. How do I check the initial Defaults to make sure it is not overwriting one? Am I doing this correct to begin with?

Upvotes: 0

Views: 344

Answers (1)

Micah Wilson
Micah Wilson

Reputation: 1482

If you are setting the default value in the AppDelegate you are setting that value back to 100 every time the app launches.

Try replacing: 

UserDefaults.standard.set(Int(100),forKey:"TotalPoints")

to:

if UserDefaults.standard.value(forKey: "TotalPoints") == nil {
    UserDefaults.standard.set(100, forKey: "TotalPoints")
}

or:

UserDefaults.standard.register(defaults: ["TotalPoints" : 100])

That way it will only set the key TotalPoints to 100 the very first time the app launches.

Upvotes: 3

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