I've got an alternative implementation of slf4j-android that you may be interested in: https://github.com/lp0/slf4j-android

It has various features and configurability (which makes it more of a logging framework than a simple adaptation layer) as the Android logging is quite basic.

It avoids the issue in #204 and caches calls to the native isLoggable() method.

Minimal configuration to specify a default logging tag is usually required to conform to existing Android conventions (using a minimal number of logger names).