Android和AWS Cognito - 无法使用proguard解组错误响应

Question

我正在使用适用于Android的AWS cognito SDK,版本2.4.3.它在调试版本上运行得非常好,但在发布版本上,如果出现错误,我无法对异常进行正确的描述.相反,我明白了

com.amazonaws.AmazonClientException: Unable to unmarshall error response (<init> [class java.lang.String]). Response Code: 400, Response Text: Bad Request
    at com.amazonaws.http.AmazonHttpClient.a(Unknown Source)
    at com.amazonaws.http.AmazonHttpClient.b(Unknown Source)
    at com.amazonaws.http.AmazonHttpClient.a(Unknown Source)
    at com.amazonaws.services.cognitoidentityprovider.AmazonCognitoIdentityProviderClient.a(Unknown Source)
    at com.amazonaws.services.cognitoidentityprovider.AmazonCognitoIdentityProviderClient.a(Unknown Source)
    at com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserPool.a(Unknown Source)
    at com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserPool.a(Unknown Source)
    at com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserPool$1.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.NoSuchMethodException: <init> [class java.lang.String]
    at java.lang.Class.getConstructor(Class.java:531)
    at java.lang.Class.getConstructor(Class.java:495)
    at com.amazonaws.transform.AbstractErrorUnmarshaller.a(Unknown Source)
    at com.amazonaws.transform.JsonErrorUnmarshaller.b(Unknown Source)
    at com.amazonaws.services.cognitoidentityprovider.model.transform.InvalidParameterExceptionUnmarshaller.b(Unknown Source)
    at com.amazonaws.http.JsonErrorResponseHandler.a(Unknown Source)
    at com.amazonaws.http.JsonErrorResponseHandler.b(Unknown Source)
    at com.amazonaws.http.JsonErrorResponseHandler.a(Unknown Source)
    at com.amazonaws.http.AmazonHttpClient.a(Unknown Source) 
    at com.amazonaws.http.AmazonHttpClient.b(Unknown Source) 
    at com.amazonaws.http.AmazonHttpClient.a(Unknown Source) 
    at com.amazonaws.services.cognitoidentityprovider.AmazonCognitoIdentityProviderClient.a(Unknown Source) 
    at com.amazonaws.services.cognitoidentityprovider.AmazonCognitoIdentityProviderClient.a(Unknown Source) 
    at com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserPool.a(Unknown Source) 
    at com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserPool.a(Unknown Source) 
    at com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserPool$1.run(Unknown Source) 
    at java.lang.Thread.run(Thread.java:818) 

在调试版本上,我得到一个异常,详细说明错误.但是,在发布和调试中,如果所有字段都写得很好,则用户注册成功.我在发布时使用proguard,我正在使用此文件中的规则

任何有关此问题的帮助将不胜感激.

Answer 1

在尝试不同的Proguard设置之后,以下是AWS SDK存储库建议的最小配置,以使其工作

-keep class com.amazonaws.services.cognitoidentityprovider.** { *; }

它必须添加到 app/proguard-rules.pro