问题
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.
回答1:
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 {
*;
}
来源：https://stackoverflow.com/questions/32521563/dynamodbmapperexception-no-method-annotated