在SWIFT中，我成功地调用了一个回调URL，该URL在用户注销后以及在我调用此URL以启用重新登录后立即撤销令牌

func runOauth(){
    self.loadingLabel.isHidden=true
    let appDelegate = UIApplication.shared.delegate as! AppDelegate

    appDelegate.oauth2!.logger = OAuth2DebugLogger(.debug)

    //code executed when OAuth have finished
    appDelegate.oauth2!.afterAuthorizeOrFail = self.callBackOAuth

    var url:URL?
    do{
        //the url for authorizing the user, kronos://oauth/callback" is called after the OAuth finish
        url = try appDelegate.oauth2!.authorizeURL(withRedirect:"kronos://oauth/callback", scope: "auth",params: ["tg":"addon/kronos/main","idx":"login.OAuth","formId":"iOS"])
        do{
            let authorizer = appDelegate.oauth2!.authorizer as! OAuth2Authorizer
            //launch OAuth in embeded view "SafariVC"
            print("Safari embeded")
            safariVC = try authorizer.authorizeSafariEmbedded(from: self,at: url!)

        }catch let error {
            DispatchQueue.main.async {
                print("ERROR authorizing(error)")
                //self.runOauth()
            }
        }
    }catch let error {
        DispatchQueue.main.async {
            print("ERROR creating OAuth URL (error)")
            //self.runOauth()
        }
    }
}

但它会在加载日志页面时自动重新登录用户，我尝试过这样做：

let appDelegate = UIApplication.shared.delegate as! AppDelegate

 let authorizer = appDelegate.oauth2!.authorizer as! OAuth2Authorizer
 authorizer.oauth2.forgetTokens()

有没有人有解决办法？

编辑：事实上，第一次注销工作正常，但如果我重新登录，我就不能再注销了，当失败时，我会在控制台中看到这一行

[Debug] OAuth2: Did exchange code for access [true] and refresh [true] tokens

EDIT2：我试过了

let appDelegate = UIApplication.shared.delegate as! AppDelegate
 appDelegate.oauth2?.forgetClient()
 appDelegate.oauth2 = OAuth2CodeGrant(settings: OAuthParams  )
 appDelegate.oauth2!.authConfig.authorizeContext = KronosWebsite?.window//KronosWebsite the WKWebview
 runOauth()

我在控制台里放了这个

[Debug] OAuth2: Forgetting client credentials and removing them from keychain
[Warn!] OAuth2: Failed to delete credentials from keychain: Error Domain=swift.keychain.error Code=-25300 "(null)"

EDIT3：我试过清空钥匙链

let secItemClasses = [kSecClassGenericPassword,
                kSecClassInternetPassword,
                kSecClassCertificate,
                kSecClassKey,
                kSecClassIdentity]
for secItemClass in secItemClasses {
      let dictionary = [kSecClass as String:secItemClass]
       SecItemDelete(dictionary as CFDictionary)
}

但是，我可能需要使用属性keychainAccountForClientCredentials和keychainAccountForTokens，那么是否可以访问存储在这些密钥链中的数据呢？