BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE

Option for setSystemBarsBehavior: Window would like to remain interactive when hiding navigation bars by calling hide or setInsetsAndAlpha.

When system bars are hidden in this mode, they can be revealed temporarily with system gestures, such as swiping from the edge of the screen where the bar is hidden from. These transient system bars will overlay app’s content, may have some degree of transparency, and will automatically hide after a short timeout.