TweenSequence<T> class

Enables creating an Animation whose value is defined by a sequence of Tweens.

Each TweenSequenceItem has a weight that defines its percentage of the animation's duration. Each tween defines the animation's value during the interval indicated by its weight.

For example, to define an animation that uses an easing curve to interpolate between 5.0 and 10.0 during the first 40% of the animation, remain at 10.0 for the next 20%, and then return to 10.0 for the final 40%:

final Animation<double> = TweenSequence(
  <TweenSequenceItem<double>>[
    TweenSequenceItem<double>(
      tween: Tween<double>(begin: 5.0, end: 10.0)
        .chain(CurveTween(curve: Curves.ease)),
      weight: 40.0,
    ),
    TweenSequenceItem<double>(
      tween: ConstantTween<double>(10.0),
      weight: 20.0,
    ),
    TweenSequenceItem<double>(
      tween: Tween<double>(begin: 10.0, end: 5.0)
        .chain(CurveTween(curve: Curves.ease)),
      weight: 40.0,
    ),
  ],
).animate(myAnimationController);