Floating Action Button

A circular button that floats above the user interface in Android apps, typically representing the primary action on a screen. Defined by Google's Material Design guidelines, FABs usually display a simple icon (such as a plus sign, pencil, or heart) without visible text labels. Because FABs rely entirely on icons to convey their function, they are particularly susceptible to accessibility barriers when developers fail to add content descriptions. Research has shown that over 90% of FABs in Android apps lack proper labels, making them among the least accessible interactive elements in mobile applications.