TimeRangePicker
· A customizable, easy-to-use, and functional circular time range picker library for Android. Use this library to mimic Apple's iOS or Samsung's bedtime picker.
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 timerangepicker-1.0.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.