Android Snackbars
Snack bars provide lightweight input on an event. They show a brief message on mobile at the bottom of the page, and on larger devices at the bottom left. Above all, the snack bars appears on screen and only one can be viewed at a time.
After a timeout or user interaction elsewhere on the screen, they immediately disappear after interactions that summon up a new surface or operation. You can swipe snackbar off screen.
Snackbars can contain an action which is set via setAction(CharSequandroid.view.View.OnClickListener).
You can supply a Snackbar. Callback via addCallback(BaseCallback) to be notified when a snack bar has been shown or dismissed.