Android Developers Docs Reference added in version 1.0.0 androidx.print Interfaces PrintHelper.OnPrintFinishCallback Callback for observing when a print operation is completed. Classes PrintHelper Helper for printing bitmaps. R Interfaces PrintHelper.OnPrintFinishCallback Classes PrintHelper R Content and code samples on this page are subject to the licenses described in the Content License. Java is a registered trademark of Oracle and/or its affiliates. Last updated July 3, 2018.