Products Cast Reference Class: SystemVolumeData cast.receiver.system.SystemVolumeData class static Represents the system volume data. Constructor SystemVolumeData new SystemVolumeData() Properties level number The level (from 0.0 to 1.0) of the system volume. muted boolean Whether the system volume is muted or not. 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 June 14, 2017.