A brute force method of getting UserDefault values.

LoadUserDefaultsManually.swift

func getUserDefaultsValueFromFile<T>(forKey key:String, type:T.Type) -> T? {
    guard let bundleIdentifier = Bundle.main.bundleIdentifier else {
        return nil
    }
    guard let libraryUrl = FileManager.default.urls(for: .libraryDirectory, in: .userDomainMask).first else {
        return nil
    }
    let userDefaultsUrl = libraryUrl.appendingPathComponent("Preferences").appendingPathComponent(bundleIdentifier).appendingPathExtension("plist")
    guard FileManager.default.fileExists(atPath: userDefaultsUrl.path) else {
        return nil
    }
    let url = URL(fileURLWithPath: userDefaultsUrl.path)
    guard let userDefaults = NSDictionary(contentsOf: url) as? Dictionary<String,AnyObject> else {
        return nil
    }
    return userDefaults[key] as? T
}