I\'m developing a printing app that uses a custom API to access the printer via USB, so I needed a custom Cordova plugin. I started developing it, it has been a very good challe
I see that you are pointing to a jar file in your config.xml. If you really want to keep using this jar file make sure that the path is correctly mapped in android platform folders and it matches the classpath.
If you want to do a simple test, you should declare your android source files one by one. So after the node config-file you should add several nodes like this one: