ios - KeychainWrapper as a substitute for NSUserDefaults for storing highScore -


hi created app , use store highscores in nsuserdefaults , load highscore everytime game launched using code:

var highscore = nsuserdefaults.standarduserdefaults().integerforkey("highscore")

then ive heard modified , thought use keychain. dont know keychain found swiftkeychainwrapper looked rather easy implement. using code 

var highscorestring: string = keychainwrapper.stringforkey("highscore")! var highscore = int(highscorestring)

however, everytime app launches found nil while unwrapping optional value suspect due first line of code force unwraps highscorestring.

i guess keychain not retain data after quits? tested without force unwrap instead did let if , highscore 0 because code not run. can 1 explain little why happens?


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