Empty CognitoSignUpOptions are required when using the Amplify.Auth.signUp()

[LeFrosch]

Only the username and password are marked with required for Amplify.Auth.signUp, but when I don’t pass an empty instance SignUpOptions I get the following error.

Invocation:

Future<bool> register(String email, String password) async {
  final result = await Amplify.Auth.signUp(
    username: email,
    assword: password,
  );

  return result.isSignUpComplete;
}

Error:

E/amplify:flutter:auth_cognito(23284): java.lang.Exception: AMPLIFY_REQUEST_MALFORMED
E/amplify:flutter:auth_cognito(23284): 	at com.amazonaws.amplify.amplify_auth_cognito.AuthCognito.onSignUp(AuthCognito.kt:218)
E/amplify:flutter:auth_cognito(23284): 	at com.amazonaws.amplify.amplify_auth_cognito.AuthCognito.onMethodCall(AuthCognito.kt:128)
E/amplify:flutter:auth_cognito(23284): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
E/amplify:flutter:auth_cognito(23284): 	at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:85)
E/amplify:flutter:auth_cognito(23284): 	at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:692)
E/amplify:flutter:auth_cognito(23284): 	at android.os.MessageQueue.nativePollOnce(Native Method)
E/amplify:flutter:auth_cognito(23284): 	at android.os.MessageQueue.next(MessageQueue.java:336)
E/amplify:flutter:auth_cognito(23284): 	at android.os.Looper.loop(Looper.java:174)
E/amplify:flutter:auth_cognito(23284): 	at android.app.ActivityThread.main(ActivityThread.java:7710)
E/amplify:flutter:auth_cognito(23284): 	at java.lang.reflect.Method.invoke(Native Method)
E/amplify:flutter:auth_cognito(23284): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:516)
E/amplify:flutter:auth_cognito(23284): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
I/flutter (23284): Unrecognized auth error returned from platform. See logs for details

I personally don’t think the error message conveys that the SignUpOptions are missing and additionally the options are not marked as required. To fix this error I created an empty map and passed it to the SignUpOptions, like that:

Future<bool> register(String email, String password) async {
  final result = await Amplify.Auth.signUp(
    username: email,
    password: password,
    options: CognitoSignUpOptions(userAttributes: <String, dynamic>{}),
  );

  return result.isSignUpComplete;
}

I don’t know if this is relevant but I configured the Cognito User Pool to use an email address as the username to sign up and sign in. Also I did not select any standard attributes.

Platform: Android
Device: OnePlus 7T (HD1903)
Android Version: 10
SDK Version: 29

Flutter Version: 1.22.5
Amplify Version: 0.0.1-dev.5

[Jordan-Nelson]

@LeFrosch thanks for opening this issue. This should be fixed as of version 0.2.1. signUp() does not require options (same behavior as you mentioned), but with 0.2.1, signUp should work without them for standard email based auth.