getRotationAnimation method
Animates the rotation of Scaffold.floatingActionButton.
The animation should both start and end with a value of 0.0 or 1.0.
The animation values are a fraction of a full circle, with 0.0 and 1.0 corresponding to 0 and 360 degrees, while 0.5 corresponds to 180 degrees.
For example, to create a rotation animation that rotates the FloatingActionButton through a full circle:
@override
Animation<double> getRotationAnimation({@required Animation<double> parent}) {
return Tween<double>(begin: 0.0, end: 1.0).animate(parent);
}
Implementation
Animation<double> getRotationAnimation({@required Animation<double> parent});