super.dispose();

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App source: animate4

Simultaneous animations

What's the point?

The Curves class defines an array of
commonly used curves that you can
use with a CurvedAnimation.

In this section, you’ll build on the example from
monitoring the progress of the animation
(animate3), which used AnimatedWidget
to animate in and out continuously. Consider the case
where you want to animate in and out while the
opacity animates from transparent to opaque.

Note:
  This example shows how to use multiple tweens on the same animation
  controller, where each tween manages a different effect in
  the animation. It is for illustrative purposes only.
  If you were tweening opacity and size in production code,
  you’d probably use FadeTransition and SizeTransition
  instead.