Swift AWS Mobile Hub表示用户在自定义UI用户池登录/身份验证后未登录

我目前正在将AWS Mobile Hub用于一个利用Cognito和云逻辑的iOS应用程序

我决定替换默认的AuthUIViewController，因为我不喜欢它的外观。我使用此示例项目帮助我通过用户池实现注册：

以下是我的实现：

从AppDelegate开始，我将要登录的UserPool设置为一个常用的可访问常量变量。我想知道为什么AWSMobileClient认为我的用户没有登录，因为它定义了自己的服务配置/池，但我不确定：

func application(_ application: UIApplication, didFinishLaunchingWithOptions     launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    AWSDDLog.add(AWSDDTTYLogger.sharedInstance)
    AWSDDLog.sharedInstance.logLevel = .verbose

    // setup service configuration
    let serviceConfiguration = AWSServiceConfiguration(region: Constants.AWS.CognitoIdentityUserPoolRegion, credentialsProvider: nil)

    // create pool configuration
    let poolConfiguration = AWSCognitoIdentityUserPoolConfiguration(clientId: Constants.AWS.CognitoIdentityUserPoolAppClientId,
                                                                    clientSecret: Constants.AWS.CognitoIdentityUserPoolAppClientSecret,
                                                                    poolId: Constants.AWS.CognitoIdentityUserPoolId)

    // initialize user pool client
    AWSCognitoIdentityUserPool.register(with: serviceConfiguration, userPoolConfiguration: poolConfiguration, forKey: AWSCognitoUserPoolsSignInProviderKey)

    // fetch the user pool client we initialized in above step
    Constants.AWS.pool = AWSCognitoIdentityUserPool(forKey: AWSCognitoUserPoolsSignInProviderKey)

    return AWSMobileClient.sharedInstance().interceptApplication(
        application, didFinishLaunchingWithOptions:
        launchOptions)
} 

AppDelegate完成后，应用程序转到其名为InitialViewController的根视图控制器。在这里，我允许用户单击facebook登录或常规（用户池）登录

class InitialViewController:UIViewController {

@objc func regLogin() {
 //Set a shared constants variable "user" to the current user   
 if (Constants.AWS.user == nil) {
        Constants.AWS.user = Constants.AWS.pool?.currentUser()
    }
    Constants.AWS.pool?.delegate = self

    //This function calls the delegate function startPasswordAuthentication() in the extension below to initiate login
        Constants.AWS.user?.getDetails().continueOnSuccessWith { (task) -> AnyObject? in
            DispatchQueue.main.async(execute: {
    //called after details for user are successfully retrieved after login                
                print(AWSSignInManager.sharedInstance().isLoggedIn)// false
                print(AWSSignInManager.init().isLoggedIn)// false
                print(AWSCognitoUserPoolsSignInProvider.init().isLoggedIn())// false
                print(Constants.AWS.user?.isSignedIn) // true
                AppDelegate.del().signIn()
            })
            return nil
        }
      }
    }

extension InitialViewController: AWSCognitoIdentityInteractiveAuthenticationDelegate {

func startPasswordAuthentication() -> AWSCognitoIdentityPasswordAuthentication {
    self.present(loginVC, animated: true, completion: nil)
    return self.loginVC
}
}

如您所见，这些函数完成了它们的工作，用户根据（Constants.AWS.user？.isSignedIn）以及我能够成功检索用户详细信息这一事实成功登录。但是，当我询问AWSSignInManager或UserPoolsSignInProvider我的用户是否已登录时，它返回false。这是一个问题，因为如果AWSMobileHub没有看到我的用户登录，我就无法访问我的云逻辑功能等

有人能帮我解释一下如何通知MobileHub和登录经理我的用户已登录到用户池，以便我的应用程序能够正常工作吗

---

谢谢大家!

在深入研究AWS代码之后，我在AWSSignInViewController.m（移动集线器/cognito的默认身份验证过程中使用的视图控制器）中的pod AWSAuthUI中找到了我的答案

代码是：

- (void)handleUserPoolSignIn {
    Class awsUserPoolsUIOperations = NSClassFromString(USERPOOLS_UI_OPERATIONS);
    AWSUserPoolsUIOperations *userPoolsOperations = [[awsUserPoolsUIOperations alloc] initWithAuthUIConfiguration:self.config];
    [userPoolsOperations loginWithUserName:[self.tableDelegate getValueForCell:self.userNameRow forTableView:self.tableView]
                                  password:[self.tableDelegate getValueForCell:self.passwordRow forTableView:self.tableView]
                      navigationController:self.navigationController
                         completionHandler:self.completionHandler];
}

只涉及重要的部分。。。用斯威夫特

 userPoolsOperations.login(withUserName: "foo", password: "bar", navigationController: self.navigationController!, completionHandler: { (provider: Any?, error: Error?) in
            print(AWSSignInManager.sharedInstance().isLoggedIn) // true
            print(AWSSignInManager.init().isLoggedIn) // false
            print(AWSCognitoUserPoolsSignInProvider.init().isLoggedIn()) // false
            print(Constants.AWS.user?.isSignedIn) // nil
            })
        }

---

经验教训：通读AWS的代码是有帮助的，尽管它很糟糕

乔纳森的答案是一个很好的起点，但它需要将AWSAuthUI包含到您的项目中

更好的解决方案是直接实现AWSUserPoolsUIOperations.m中的函数。特别是，按下登录按钮时触发的功能应如下所示：

@IBAction func signInPressed(_ sender: AnyObject) {
    if (self.usernameTextField.text != nil && self.passwordTextField.text != nil) {

        self.userName = self.usernameTextField.text!
        self.password = self.passwordTextField.text!

        AWSCognitoUserPoolsSignInProvider.sharedInstance().setInteractiveAuthDelegate(self)

        AWSSignInManager.sharedInstance().login(
            signInProviderKey: AWSCognitoUserPoolsSignInProvider.sharedInstance().identityProviderName,
            completionHandler: { (provider: Any?, error: Error?) in
                print(AWSSignInManager.sharedInstance().isLoggedIn)
        })
   } else {
       let alertController = UIAlertController(title: "Missing information",
                                                message: "Please enter a valid user name and password",
                                                preferredStyle: .alert)
       let retryAction = UIAlertAction(title: "Retry", style: .default, handler: nil)
       alertController.addAction(retryAction)
   }
}

然后包括以下功能作为SignIn view控制器的扩展：

public func handleUserPoolSignInFlowStart() {
    let authDetails = AWSCognitoIdentityPasswordAuthenticationDetails(username: self.userName!, password: self.password!)
    self.passwordAuthenticationCompletion?.set(result: authDetails)
}

public func startPasswordAuthentication() -> AWSCognitoIdentityPasswordAuthentication {
    return self
}

public func getDetails(_ authenticationInput: AWSCognitoIdentityPasswordAuthenticationInput, passwordAuthenticationCompletionSource: AWSTaskCompletionSource<AWSCognitoIdentityPasswordAuthenticationDetails>) {
    self.passwordAuthenticationCompletion = passwordAuthenticationCompletionSource
}

public func didCompleteStepWithError(_ error: Error?) {
    DispatchQueue.main.async {
        if let error = error as NSError? {
            let alertController = UIAlertController(title: error.userInfo["__type"] as? String,
                                                    message: error.userInfo["message"] as? String,
                                                    preferredStyle: .alert)
            let retryAction = UIAlertAction(title: "Retry", style: .default, handler: nil)
            alertController.addAction(retryAction)

            self.present(alertController, animated: true, completion:  nil)
        } else {
            self.usernameTextField.text = nil
            self.dismiss(animated: true, completion: nil)
        }
    }
}

public func handleUserPoolSignInFlowStart（）{
让authDetails=AWSCognitoIdentityPasswordAuthenticationDetails（用户名：self.username！，密码：self.password！）
self.passwordAuthenticationCompletion？.set（结果：authDetails）
}
public func startPasswordAuthentication（）->AWSCognitoIdentityPasswordAuthentication{
回归自我
}
public func getDetails（authenticationInput:AWSCognitoIdentityPasswordAuthenticationInput，passwordAuthenticationCompletionSource:AWSTaskCompletionSource）{
self.passwordAuthenticationCompletion=passwordAuthenticationCompletionSource
}
公共函数didCompleteTestepWithError（error:error？）{
DispatchQueue.main.async{
如果let error=错误为N错误{
让alertController=UIAlertController（标题：error.userInfo[“\uuu type”]作为？字符串，
消息：错误。userInfo[“消息”]作为？字符串，
preferredStyle:。警报）
let retryAction=UIAlertAction（标题：“重试”，样式：。默认，处理程序：nil）
alertController.addAction（retryAction）
self.present（alertController，动画：true，完成：nil）
}否则{
self.usernameTextField.text=nil
self.disclose（动画：true，完成：nil）
}
}
}