Android Developers Docs Reference android.support.test.jank Annotations GfxMonitor Annotation used to configure a gfx monitor. JankTest Annotation used to configure a jank test method. Classes JankTestBase Base test class for measuring Jank. Annotations GfxMonitor JankTest Classes JankTestBase Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated April 17, 2018.