<configuration>

    <appender name="logcat" class="ch.qos.logback.classic.android.LogcatAppender">
        <tagEncoder>
            <pattern>%logger{12}</pattern>
        </tagEncoder>
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} [%-20thread] %-5level %logger{36} - %msg</pattern>
        </encoder>
    </appender>

    <root level="NONE">
        <appender-ref ref="logcat" />
    </root>

</configuration>