animated_rotation_button.dart

class AnimatedRotationButton extends StatefulWidget {
  final Widget child;
  final double angle;
  final Function onPressed;

  const AnimatedRotationButton({
    Key key,
    this.child,
    this.angle,
    this.onPressed,
  }) : super(key: key);

  @override
  State createState() => _AnimatedRotationButtonState();
}

class _AnimatedRotationButtonState extends State<AnimatedRotationButton> {
  @override
  Widget build(BuildContext context) {
    return Transform.rotate(
      angle: widget.angle,
      child: RaisedButton(
        color: Colors.blue,
        child: widget.child,
        onPressed: widget.onPressed,
      ),
    );
  }
}