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Reputation: 2614

DynamoDbMapperException: No method annotated?

In my android app, I use DynamoDb. I create a class, which is mapped with a table of database. App runs normally in debug. But if I export apk and run app, I get the DynamoDbMapperException:

Caused by: com.amazonaws.mobileconnectors.dynamodbv2.dynamodbmapper.DynamoDBMappingException: No method annotated with interface com.amazonaws.mobileconnectors.dynamodbv2.dynamodbmapper.DynamoDBHashKey for class class com.example.myclass.

I use Eclipse and proguard to export apk. I guess proguard causes the problem, because the apk without proguard works fine. Here is my Proguard config:

-keepattributes *Annotation*
-keep public class com.example.myclass

Please help me! I don't know how to solve the problem.

Upvotes: 1

Views: 1503

Answers (1)

Derek Fung
Derek Fung

Reputation: 8211

Are you using a DynamoDB table?

You need to have a hash key for the class, you should annotate the field with @DynamoDBHashKey, do you accidentally annotated it as @DynamoDBIndexHashKey? If so, you should change it back.

A similar reference can be found here

Android Amazon DynamoDb error in basic action

Edit: Try chaning 

-keep public class com.example.myclass

to

-keep public class com.example.myclass {
    *;
}

Upvotes: 3

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