Please see wiki for more detail info HandlerManager Jtools A android tools Gradle: compile 'tw.jwzhuang.Jtools:jtools:1.0.1' Maven: <dependency> <groupId>tw.jwzhuang.Jtools</groupId> <artifactId>jtools</artifactId> <version>1.0.1</version> <type>pom</type> </dependency>