background abstract method

Widget? background()

Override this method to add background widget.

This widget returned by this method will be placed as background of that particular slide. Background is wrapped inside a SizedBox.expand widget so that it stretches to the whole.

If this method returns null, then the background widget will be empty i.e. there will be an empty SizedBox.expand instead.

Implementation

// @mustBeOverridden
Widget? background();