StaggeredGridView Library
· A grid that supports elements of varying widths and heights. Includes horizontal and vertical orientation support, sections, ability to preload pages.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window StaggeredGridView-0.0.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.