What is the purpose of animation controller class in Flutter?

The Animation Controller class in Flutter is used to control and manage animations. It provides a way to start, stop, or pause an animation, and allows you to define the duration, speed, and direction of an animation.

The primary purpose of the Animation Controller class is to define an animation that can be used in your app’s user interface. The class provides methods for defining and manipulating animations, such as setting the duration and the curve used to control the animation’s progress.