It's How different
File: delete.swift ------------------------- // 保存データを全削除 let userDefault = NSUserDefaults.standardUserDefaults() var appDomain:String = NSBundle.mainBundle().bundleIdentifier! NSUserDefaults.standardUserDefaults().removePersistentDomainForName(appDomain) // キーidの値のみを削除 userDefault.removeObjectForKey("id")
File: ViewController.m ------------------------- NSString *appDomain = [[NSBundle mainBundle] bundleIdentifier]; [[NSUserDefaults standardUserDefaults] removePersistentDomainForName:appDomain];