对成员Swift 3的模糊引用

Question

我正在将我的项目从Swift 2.3迁移到Swift 3.并且遇到了预期的困难.

这是一个使用OAuthSwift用于OAuth的函数.我试过转换

class func OAuthSwiftAuthorization(inViewController viewController: UIViewController, withOAuthInfo info:FitnessTracker, successHandler:@escaping MyOAuthNewSuccessHandler, failure: @escaping ((_ error: NSError) -> Void)) {

    let oauthswift = OAuth2Swift(
        consumerKey:    info.consumerKey,
        consumerSecret: info.consumerSecret,
        authorizeUrl:   info.authorizeUrl,
        accessTokenUrl: info.accessTokenUrl,
        responseType:   info.responseType
    )

    oauthswift.authorizeURLHandler = SafariURLHandler(viewController: viewController, oauthSwift: oauthswift)
    oauthswift.accessTokenBasicAuthentification = true
    oauthswift.allowMissingStateCheck = true

    oauthswift.authorize(withCallbackURL: URL(string: info.callBackUrl)!, scope: info.scope, state: info.state, success: { (credential, response, parameters) in

             successHandler(credential, response, parameters)
    }) { (error) in

        failure(error: error)
        print(error.localizedDescription)
    }
}

但是我收到了错误

oauthswift.authorize(withCallbackURL: URL(string: info.callBackUrl)!, scope: info.scope, state: info.state, success: { (credential, response, parameters) in

错误状态

对成员'authorize的不明确引用(withCallbackURL:scope:state:parameters:headers:success:failure :)'

这是Swift 2的工作代码.

    oauthswift.authorizeWithCallbackURL(
        URL(string: info.callBackUrl)!,
        scope: info.scope, state:info.state,
        success: { credential, response, parameters in

            successHandler(credientials: credential, response: response, params: parameters)
        },
        failure: { error in

            failure(error: error)
            print(error.localizedDescription)
        }
    )

更新:

错误没有出现unitil我输入成功和faliure handelrs.这符合罚款:

        oauthswift.authorize(withCallbackURL: URL(string: info.callBackUrl)!, scope: info.scope, state: info.state, success: { (credential, response, parameters) in
        // successHandler(credential, response, parameters)
    }) { (erorr) in
        // failure(error: error
    }

所以请指导我谢谢.

Answer 1

我认为这个问题是由Swift的类型推断和闭包的一些缺点引起的.您可以尝试以下方法之一:

要么不使用尾随闭包,例如

oauthswift.authorize(withCallbackURL: URL(string: info.callBackUrl)!, scope: info.scope, state: info.state, success: { (credential, response, parameters) in

         successHandler(credential, response, parameters)
}, failure: { (error) in

    failure(error: error)
    print(error.localizedDescription)
})

或提供错误的显式类型,例如

 oauthswift.authorize(withCallbackURL: URL(string: info.callBackUrl)!, scope: info.scope, state: info.state, success: { (credential, response, parameters) in

         successHandler(credential, response, parameters)
 }) { (error: Error) in

     failure(error: error)
     print(error.localizedDescription)
 }