Animation notifications

Animation object can have

Monitoring the progress of the animation shows an
example of

Animation examples

This section walks you through 5 animation examples.
Each section provides a link to the source code for that example.

Rendering animations

What's the point?

How to add basic animation to a widget using addListener() and
setState().

Every time the Animation generates a new number, the addListener()
function calls setState().

How to define an AnimationController with the required
vsync parameter.

Understanding the “..” syntax in “..addListener”,
also known as Dart’s cascade notation.

To make a class private, start its name with an underscore (_).