Products Google APIs for Android Reference OnProgressListener public interface OnProgressListener A listener that is called periodically during execution of the ControllableTask. Public Method Summary abstract void onProgress(TProgress snapshot) Public Methods public abstract void onProgress (TProgress snapshot) 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 September 6, 2017.