This simple app turns your Android phone into a DropDownView Library Demo App.
To use this app the user just clicks the 'DropDownView Library Demo App' icon and they are taken right into the app. They are greeted with a title on top 'DropDownViewLibrary Demo'. Then a Header bar labeled 'Speaking Mandarin Chinese'. When the user clicks the header the footer expands down and shows the various information programed into the app. The information text is color coded to make readability easier for the user. Then when the user is done they just click the header again and the footer retracts back up into the header space.
External Library used: com.github.AnthonyFermin:DropDownView:1.0.1
Production App screen caps taken from App running on Nexus 6running Android 8.1 Oreo (API 27).