放大 iOS 登录屏幕不呈现控件

Question

我正在 iOS 上与 AWS Amplify 合作，以利用开箱即用的用户身份验证屏幕，但不幸的是，它们并未完全呈现，如下所示。我正在使用 https://docs.aws.amazon.com/aws-mobile/latest/developerguide/add-aws-mobile-user-sign-in.html 的 Amplify 教程中的代码。我使用的是 XCode 10，我在 iOS 的 v12 和 v11.4 上尝试过许多设备模拟器，它们都表现出相同的行为。有没有其他人经历过这种情况？我的代码包含在下面：

播客文件

platform :ios, '12.0'

target 'TestApp1' do
  # Comment the next line if you're not using Swift and don't want to use dynamic frameworks
  use_frameworks!

  # Pods for TestApp1
  pod 'AWSCore', '~> 2.6.33'
  pod 'AWSPinpoint', '~> 2.6.33'
  pod 'AWSMobileClient', '~> 2.6.33'
  pod 'AWSUserPoolsSignIn', '~> 2.6.33'
  pod 'AWSAuthUI', '~> 2.6.33'

end

AppDelegate.swift

import AWSPinpoint
import AWSMobileClient

...

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // Create AWSMobileClient to connect with AWS
        return AWSMobileClient.sharedInstance().interceptApplication(application, didFinishLaunchingWithOptions: launchOptions)
    }

    func application(_ application: UIApplication, open url: URL,
                     sourceApplication: String?, annotation: Any) -> Bool {

        return AWSMobileClient.sharedInstance().interceptApplication(
            application, open: url,
            sourceApplication: sourceApplication,
            annotation: annotation)

    }

查看我尝试启动登录屏幕的代码

import AWSCore
import AWSMobileClient
import AWSAuthCore
import AWSAuthUI

...

override func viewDidLoad() {
    super.viewDidLoad()
    showSignIn()
}

func showSignIn() {
    if !AWSSignInManager.sharedInstance().isLoggedIn {
        AWSAuthUIViewController
            .presentViewController(with: self.navigationController!,
                                   configuration: nil,
                                   completionHandler: { (provider: AWSSignInProvider, error: Error?) in
                                    if error != nil {
                                        print("Error occurred: \(String(describing: error))")
                                    } else {
                                        print("Identity provider: \(provider.identityProviderName)")
                                    }
            })
    }
}

Answer 1

这个问题在 GitHub https://github.com/aws/aws-sdk-ios/issues/1082 上由一位名叫 rohandubal 的绅士回答了。问题是我的 awsconfiguration.json 文件没有 CognitoUserPool 的配置信息。

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