Android developer portal with tools, libraries, and apps

Allows very smoothly animated and versatile addition and removal of ListView items [mostly] regardless of layout complexity, unlike traditional SwipeDismiss implementations.

A layout to transition between two views using a Floating Action Button as shown in many Material Design concepts.

If you have a need to implement a UI component which will act similar to toggle button or be like a view group with state checked/unchecked this is a right choice for you.