Getting Error Couldn't load class java.lang.NoClassDefFoundError:

I am implementing P2PKIT in my xamarin android project, for that I have done following steps:

• I have created Library project in android studio to enable p2pkit and created JAR file.
• I have created Binding Library Project in visual studio and added created JAR file into Binding Library Project.
• Setting JAR file Build action as EmbededJar.
• Giving Reference of Binding Libarary Project into my Xamarin Android project

When running app in visual studio it is crashing and throwing Exception Couldn't load class java.lang.NoClassDefFoundError: ch/uepaa/p2pkit/P2PKitStatusListener

As per my observation, P2PKitStatusListener is not accessible in visual studio. How I can access P2PKitStatusListener in visual studio project?

Note: I used same JAR file inside android studio application and its working fine.