Android Developers Docs Reference androidx.heifwriter Classes HeifWriter This class writes one or more still images (of the same dimensions) into a heif file. HeifWriter.Builder Builder class for constructing a HeifWriter object from specified parameters. Classes HeifWriter HeifWriter.Builder 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 January 23, 2019.