progress-fab
· Add a circular progress bar to any existing fab. Idea was to not create custom floating action button, but help to integrate existing circular progress with existing floating action button like described in material design guideline.
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 progress-fab-1.5.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.