Flutter AppBar with Round Bottom Corners

The round bottom corners are created using shape property with RoundedRectangleBorder as value.

class RoundAppBar extends StatelessWidget with PreferredSizeWidget{
  final double barHeight = 50;
  final String title;

  RoundAppBar({Key key, this.title}) : super(key: key);

  @override
  Size get preferredSize => Size.fromHeight(kToolbarHeight + barHeight);

  @override
  Widget build(BuildContext context) {
    return AppBar(
      title: Center(child: Text(title)),
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(
          bottom: Radius.circular(48.0),
        ),
      ),
      actions: [
        Icon(Icons.dehaze)
      ],
    );
  }
}

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