Products J2ObjC Reference android.os Classes AsyncTask<Params, Progress, Result> AsyncTask enables proper and easy use of the UI thread. SystemClock Core timekeeping facilities. Enums AsyncTask.Status Indicates the current status of the task. 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 May 4, 2017.