Provides classes that handle tweened animations.
Android provides two mechanisms that you can use to create simple animations: tweened animation. in which you tell Android to perform a series of simple transformations (position, size, rotation, and so on) to the content of a View; and frame-by-frame animation. which loads a series of Drawable resources one after the other. Both animation types can be used in any View object to provide simple rotating timers, activity icons, and other useful UI elements.