ExpandableTextView Library
· Android library that allows developers to easily create an TextView which can expand/collapse just like the Google Play's app description.
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 expandableTextView-0.1.4.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.