Usar o APKPure APP
Obter o APK da versão antiga de Floating Action Button para Android
Amostra para a biblioteca FloatingActionButton open-source.
Sample for the open-source library FloatingActionButton.
Android floating action button which reacts on the scrolling events. Becomes visible when an attached target is scrolled up and invisible when scrolled down.
Sources: https://github.com/makovkastar/FloatingActionButton