Proguard obfuscation and generic methods

Question

I'm trying to obfuscate an Android App with ProGuard.

Here I have a class

public class Book implements DBbinded

And a generic method

private void storeDBObjects(ArrayList<? extends DBbinded> dbObjects)

The call of this method throws an java.lang.ClassCastException: java.util.LinkedHashMap after obfuscation. What should I write into proguard.properties to fix this?

Answer 1

I have just come across this problem and resolved it by specifying the 'Signature' attribute under the -keepattributes ProGuard argument.

-keepattributes SourceFile,LineNumberTable,Signature,*Annotation*

I do not believe it is a ProGuard bug. Hope that helps.