ios - 将 swift 1.2 代码转换为 swift 2 : Missing argument label in call

Question

尝试根据本教程 (https://www.raywenderlich.com/85528/user-accounts-ios-ruby-rails-swift#next_section) 为 API 身份验证项目设置授权 header 时，出现“调用中缺少参数标签‘rawValue:’”错误。

这是有问题的代码

let base64EncodedString = utf8str?.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(0))

完整代码:

switch authType {
  case .HTTPBasicAuth:
    // Set BASIC authentication header
    let basicAuthString = "\(HTTPHelper.API_AUTH_NAME):\(HTTPHelper.API_AUTH_PASSWORD)"
    let utf8str = basicAuthString.dataUsingEncoding(NSUTF8StringEncoding)
    let base64EncodedString = utf8str?.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(0))

    request.addValue("Basic \(base64EncodedString!)", forHTTPHeaderField: "Authorization")
  case .HTTPTokenAuth:
    // Retrieve Auth_Token from Keychain
    if let userToken = KeychainAccess.passwordForAccount("Auth_Token", service: "KeyChainService") as String? {
      // Set Authorization header
      request.addValue("Token token=\(userToken)", forHTTPHeaderField: "Authorization")
    }
  }

完整代码可以在此处 ( https://codeshare.io/uJPcX ) 第 50 行找到

Answer 1

改变:

let base64EncodedString = utf8str?.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(0))

到:

let base64EncodedString = utf8str?.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))