Search Bar

 Search Bar - 3.0.0

Package :-  Pubspec.yaml

                    flutter_search_bar: ^3.0.0-dev.1

class ErrorSolves extends StatefulWidget {
  @override
  _ErrorSolvesState createState() => _ErrorSolvesState();
}

class _ErrorSolvesState extends State<ErrorSolves> {

  late SearchBar searchBar;
  final GlobalKey<ScaffoldState>_scaffoldKey=GlobalKey<ScaffoldState>();

  AppBar buildAppBar(BuildContext context){
    return AppBar(
      //title: Text("Search Bar"),
      actions: [searchBar.getSearchAction(context)],
    );
  }

  void onSubmitted(String value){
    setState((){
      var context = _scaffoldKey.currentContext;
      if (context == null) {
        return;
      }
      ScaffoldMessenger.maybeOf(context)
          ?.showSnackBar(new SnackBar(content: new Text('You wrote "$value"!')));
      //_scaffoldKey.currentState.showSnackBar(SnackBar(content: Text("you wrote $value")));
    });
  }

  _ErrorSolvesState(){
    searchBar=SearchBar(
      inBar: false,
      buildDefaultAppBar: buildAppBar,
      setState: setState,
      onSubmitted: onSubmitted,
      onCleared: (){
        print("cleared");
      },
      onClosed: (){
        print("closed");
      }
    );
  }

  @override
  Widget build(BuildContext context) {

    return Scaffold(
      appBar: searchBar.build(context),
      key: _scaffoldKey,
      body: ListView(
        children: <Widget>[

          Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[

              TextButton(
                child: Text("Don`t look at me! Press the search button!"),
                onPressed: (){
                  print("worked");
                }
              ),

            ],
          ),
        ],
      ),
    );

  }
}