Akka. Android. NoSuchMethodException: <init>

Question

When I am running application that uses Akka on Android I receive the following exception:

04-29 16:13:06.235: E/AndroidRuntime(8968): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp/com.myapp.MyActivity}: java.lang.NoSuchMethodException: <init> [interface com.typesafe.config.Config, interface akka.event.LoggingAdapter, interface java.util.concurrent.ThreadFactory]

This exception is thrown during actor system creation:

Props props1 = Props.create(MyActor.class);
ActorSystem system = ActorSystem.create("MySystem");

I assumed that proguard removed a constructor, so I added the following line to my proguard.cfg:

-keep class com.typesafe.**  { *; }

but it didn't help.

What am I doing wrong?

Answer 1

One of your constructors with the following signature is not public or doesn't exist:

MyActivity (com.typesafe.config.Config, akka.event.LoggingAdapter, java.util.concurrent.ThreadFactory)

Answer 2

Expanding on mttdbrd's answer... For those confused how to actually get rid of this warning add the following to your proguard:

-keepclasseswithmembers class * {
    public <init>(com.typesafe.config.Config, akka.event.LoggingAdapter, java.util.concurrent.ThreadFactory);
}