flexibleSpace property

Widget? flexibleSpace
final

This widget is stacked behind the toolbar and the tab bar. It's height will be the same as the app bar's overall height.

A flexible space isn't actually flexible unless the GradientAppBar's container changes the GradientAppBar's size. A SliverGradientAppBar in a CustomScrollView changes the GradientAppBar's height when scrolled.

Typically a FlexibleSpaceBar. See FlexibleSpaceBar for details.

Implementation

final Widget? flexibleSpace;