Flutter Use Animation And Animation Controller | Curved Animation In Flutter | 25.2

A controller for animation.

This class lets you perform tasks such as:

Play an animation forward or in reverse, or stop an animation.
Set the animation to a specific value.
Define the upperBound and lowerBound values of an animation.
Create a fling animation effect using a physics simulation.
By default, an AnimationController linearly produces values that range from 0.0 to 1.0, during a given duration. The animation controller generates a new value whenever the device running your app is ready to display a new frame (typically, this rate is around 60 values per second).

Ticker providers
An AnimationController needs a TickerProvider, which is configured using the vsync argument on the constructor.

The TickerProvider interface describes a factory for Ticker objects. A Ticker is an object that knows how to register itself with the SchedulerBinding and fires a callback every frame. The AnimationController class uses a Ticker to step through the animation that it controls.

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