类型'；CFStringRef'；不符合协议'；可散列'；在Xcode 6.1中

在我的应用程序中，我有一个密钥链访问类，该类在Xcode 6中工作，但现在在Xcode 6.1中我遇到一些错误这是第一个错误：“CFStringRef”类型不符合协议“Hashable”：

private class func updateData(value: NSData, forKey keyName: String) -> Bool {
    let keychainQueryDictionary: NSMutableDictionary = self.setupKeychainQueryDictionaryForKey(keyName)

    let updateDictionary = [kSecValueData:value] //HERE IS THE ERROR

    // Update
    let status: OSStatus = SecItemUpdate(keychainQueryDictionary, updateDictionary)

    if status == errSecSuccess {
        return true
    } else {
        return false
    }
}

我也得到了一个类似于第一个错误的错误，但它是：类型'CFStringRef'不符合协议'NSCopying'这里是我得到这个错误的部分：

private class func setupKeychainQueryDictionaryForKey(keyName: String) -> NSMutableDictionary {
    // Setup dictionary to access keychain and specify we are using a generic password (rather than a certificate, internet password, etc)

    var keychainQueryDictionary: NSMutableDictionary = [kSecClass:kSecClassGenericPassword] 

    // HERE IS THE ERROR ↑↑↑

    // Uniquely identify this keychain accessor
    keychainQueryDictionary[kSecAttrService as String] = KeychainWrapper.serviceName

    // Uniquely identify the account who will be accessing the keychain
    var encodedIdentifier: NSData? = keyName.dataUsingEncoding(NSUTF8StringEncoding)

    keychainQueryDictionary[kSecAttrGeneric as String] = encodedIdentifier
    keychainQueryDictionary[kSecAttrAccount as String] = encodedIdentifier

    return keychainQueryDictionary
}

---

有人能告诉我如何解决这些错误吗

CFStringRef

与

NSString

桥接，后者与

String

桥接。最简单的解决方案是将

kSecValueData

和

kSecClass

转换为

String

s或

NSString

s：

在这里：

在这里：

var keychainQueryDictionary: NSMutableDictionary = [kSecClass as NSString: kSecClassGenericPassword]

---

我认为它会更具可读性

let keychainQueryDictionary : [String: AnyObject] = [
  kSecClass       : kSecClassGenericPassword,
  kSecAttrService : serviceIdentifier,
  kSecAttrAccount : accountName
]    

let keychainQueryDictionary : [String: AnyObject] = [
  kSecClass       : kSecClassGenericPassword,
  kSecAttrService : serviceIdentifier,
  kSecAttrAccount : accountName
]