Advice for app development iOS. ApplicationDidEnterBackground

Question

I´m having some fun with swift and I´m trying to make a simple game. I got a few variables that changes during the game. What´s the best practice for saving those variables if <

Answer 1

If its just a few variables you want to store and manage you could use NSUserDefaults.

    // Create defaults
    let defaults = NSUserDefaults.standardUserDefaults()

    // Set an int for highScoreKey in our defaults
    defaults.setInteger(10, forKey: "highScoreKey")

    // Sync/Save the defaults we've changed
    defaults.synchronize()

    // Then to retrieve our highScoreKey default we've saved
    // We create an int to store the value that is in our default
    var highScoreInt = defaults.integerForKey("highScoreKey")

    println(highScoreInt)
    // Prints 10

I'd set and save these values as soon as I have the values I need rather than in applicationDidEnterBackground though.

NSUserDefaults Class Reference