Swift App first run detection

Question

in swift, how can i detect if this is the first time the app is ran ? i want to create a simple game that sets the high score to 0 if the app is new. if i typed this :

 override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    

    NSUserDefaults.standardUserDefaults().setObject(0, forKey: "firstrun")
    if ( NSUserDefaults.standardUserDefaults().objectForKey("firstrun")?.integerValue == 0 ){
        
        NSUserDefaults.standardUserDefaults().setObject(0, forKey: "HighScore")
        else {
      
            outputLabel.text = String(NSUserDefaults.standardUserDefaults().objectForKey("HighScore")
      }
}

This "firstrun" will be reseted to 0 after every launch, how can i solve this issue

http://stackoverflow.com/questions/9964371/how-to-detect-first-time-app-launch-on-an-iphone V. similar question but in obj C. Should be easy to convert — Alec., Dec 15 '14 at 17:17

score 3 · Answer 1 · answered Dec 15 '14 at 17:20

3

NSUserDefaults has a registerDefaults: method for this purpose. Use it (in application:didFinishLaunchingWithOptions:).

answered Dec 15 '14 at 17:20

matt

515,959
87
875
1,141

score 1 · Answer 2 · answered Dec 15 '14 at 18:13

As matt said, registerDefaults was created for this purpose.

However, if you don't want to use registerDefaults, then I'd suggest using integerForKey and setInteger instead of using objectForKey. integerForKey defaults to 0. So if you use it, the HighScore will default to 0 until it is set.

Swift App first run detection

2 Answers2

Linked

Related