AWS Amplify Swift API 登录 iOS 移动应用程序

Posted 2023-03-10

【中文标题】AWS Amplify Swift API 登录 iOS 移动应用程序

【英文标题】：AWS Amplify Swift API login iOS Mobile App

【发布时间】：2020-05-04 08:43:14

【问题描述】：

我正在关注docs通过API实现登录，

class AWSUserPool 

    var userAuthenticationError: Error?

    AWSMobileClient.default().signIn(username: <param username>, password: <param password>)  (signInResult, error) in
        if let error = error  
            print("\(error.localizedDescription)")
            self.userAuthenticationError = error
         else if let signInResult = signInResult 
            switch (signInResult.signInState) 
            case .signedIn:
                print("User is signed in.")
            case .smsMFA:
                print("SMS message sent to \(signInResult.codeDetails!.destination!)")
            default:
                print("Sign In needs info which is not yet supported.")
            
        
    

我已经实例化了该类，并且在提供了正确的凭据后登录工作，我想向警报显示错误消息，但我可以打印可选的错误（未找到用户....）但我我无法将其分配给类变量。

import RxSwift

        let observable: Observable<Error?> = Observable<Error?>.just(self.awsUserPool?.userAuthenticationError)
        let disposeBag = DisposeBag()


        observable.subscribe  event in
           print(event)
        
        .disposed(by: disposeBag)

【参考方案1】：

我会首先围绕AWSMobileClient 编写一个反应式包装器，如下所示：

extension Reactive where Base: AWSMobileClient 
    func signIn(username: String, password: String) -> Observable<SignInResult> 
        return Observable.create  observer in
            self.base.signIn(username: username, password: password)  (signinResult, error) in
                if let signinResult = signinResult 
                    observer.onNext(signinResult)
                    observer.onCompleted()
                
                else 
                    observer.onError(error ?? RxError.unknown)
                
            
            return Disposables.create()
        
    

然后将错误放入 Observable 中，请执行以下操作：

class AWSUserPool 

    let userAuthenticationError: Observable<Error>
    private let disposeBag = DisposeBag()

    init(username: String, password: String) 
        let result = AWSMobileClient.default().rx.signIn(username: username, password: password)
            .materialize()

        result
            .compactMap  $0.element 
            .subscribe(onNext:  signinResult in
                switch signinResult.signInState 
                case .signedIn:
                    print("User is signed in.")
                case .smsMFA:
                    print("SMS message sent to \(signinResult.codeDetails!.destination!)")
                default:
                    print("Sign In needs info which is not yet supported.")
                
            )
            .disposed(by: disposeBag)
        userAuthenticationError = result.compactMap  $0.error 
    

不过，我可能不会打扰 AWSUserPool……这取决于你。