DefaultTabController constructor

const DefaultTabController({
  1. Key? key,
  2. required int length,
  3. int initialIndex = 0,
  4. required Widget child,
  5. Duration? animationDuration,
})

Creates a default tab controller for the given child widget.

The length argument is typically greater than one. The length must match TabBar.tabs's and TabBarView.children's length.

Implementation

const DefaultTabController({
  super.key,
  required this.length,
  this.initialIndex = 0,
  required this.child,
  this.animationDuration,
}) : assert(length >= 0),
     assert(length == 0 || (initialIndex >= 0 && initialIndex < length));