In AWS iOS SDK, how do I handle FORCE_CHANGE_PASSWORD User Status

Question

I have followed the sample here

https://github.com/awslabs/aws-sdk-ios-samples/tree/master/CognitoYourUserPools-Sample

To integrate interactive cognito login

Answer 1

Sorted this now. Posting it here in case it helps anyone else.

First, you need to create a view controller that will allow the user to specify the new password. The ViewController should have a AWSTaskCompletionSource as a property:

var newPasswordCompletion: AWSTaskCompletionSource?

Following the pattern in the sample referred to in the question, I then implemented AWSCognitoIdentityNewPasswordRequired as an extension to the view controller as follows:

extension NewPasswordRequiredViewController: AWSCognitoIdentityNewPasswordRequired {
    func getNewPasswordDetails(_ newPasswordRequiredInput: AWSCognitoIdentityNewPasswordRequiredInput, newPasswordRequiredCompletionSource:
    AWSTaskCompletionSource) {                    
        self.newPasswordCompletion = newPasswordRequiredCompletionSource
    }

    func didCompleteNewPasswordStepWithError(_ error: Error?) {
        if let error = error as? NSError {
            // Handle error
        } else {
            // Handle success, in my case simply dismiss the view controller
            self.dismiss(animated: true, completion: nil)
        }
    }

}

Again following the design of the sample detailed in the question, add a function to the AWSCognitoIdentityInteractiveAuthenticationDelegate extension to AppDelegate:

extension AppDelegate: AWSCognitoIdentityInteractiveAuthenticationDelegate {
    func startPasswordAuthentication() -> AWSCognitoIdentityPasswordAuthentication {
        //Existing implementation
    }
    func startNewPasswordRequired() -> AWSCognitoIdentityNewPasswordRequired {
        // Your code to handle how the NewPasswordRequiredViewController is created / presented, the view controller should be returned
        return self.newPasswordRequiredViewController!
    }
}