buildLeading method
A widget to display before the current query in the AppBar.
Typically an IconButton configured with a BackButtonIcon that exits the search with close. One can also use an AnimatedIcon driven by transitionAnimation, which animates from e.g. a hamburger menu to the back button as the search overlay fades in.
Returns null if no widget should be shown.
See also:
- AppBar.leading, the intended use for the return value of this method.
Implementation
@override
Widget? buildLeading(BuildContext context) {
return IconButton(
tooltip: 'Close',
onPressed: () => close(context, SearchResult(isCancelled: true)),
icon: const Icon(Icons.arrow_back_ios_new));
}