RestorableCupertinoTabController constructor Null safety
- {int initialIndex = 0}
Creates a RestorableCupertinoTabController to control the tab index of CupertinoTabScaffold and CupertinoTabBar.
The initialIndex
must not be null and defaults to 0. The value must be
greater than or equal to 0, and less than the total number of tabs.
Implementation
RestorableCupertinoTabController({ int initialIndex = 0 })
: assert(initialIndex != null),
assert(initialIndex >= 0),
_initialIndex = initialIndex;