对成员Swift 3的含糊不清的引用

本文介绍了对成员Swift 3的含糊不清的引用的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

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

I am migrating my project from Swift 2.3 to Swift 3. And having difficulty as expected.

此处是使用 OAuthSwift 的OAuth函数.我试图转换

Here is a function which is being used for OAuth, using OAuthSwift. I have tried to convert

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) } }

但是我在

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(withCallbackURL:scope:state:parameters:headers:success:failure :)'的引用不明确

Ambiguous reference to member 'authorize(withCallbackURL:scope:state:parameters:headers:success:failure:)'

这是Swift 2的工作代码.

Here is the working code from Swift 2.

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:

我键入成功和失败后，错误不会出现.这很好:

Error does not appear unitil I type success and faliure handelrs. This complies fine:

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.

推荐答案

我认为此问题是由于Swift的类型推断与闭包相结合而引起的. 您可以尝试以下操作之一:

I think the problem is caused by some shortcomings of Swift's type inference in combination with closures. You could try one of the following:

例如，不要使用结尾的闭包

Either don't use trailing closures, e.g.

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) })

或提供明确的错误类型，例如

or provide an explicit type for error, e.g.

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) }