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 AppBar's container changes the AppBar's size. A SliverAppBar in a CustomScrollView changes the AppBar's height when scrolled.

Typically a FlexibleSpaceBar. See FlexibleSpaceBar for details.

Implementation

final Widget flexibleSpace