@override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SafeArea(
        child: SearchBar<Post>(
          searchBarPadding: EdgeInsets.symmetric(horizontal: 10),
          headerPadding: EdgeInsets.symmetric(horizontal: 10),
          listPadding: EdgeInsets.symmetric(horizontal: 10),
          onSearch: _getALlPosts,
          searchBarController: _searchBarController,
          placeHolder: Text("placeholder"),
          cancellationWidget: Text("Cancel"),
          emptyWidget: Text("empty"),
          indexedScaledTileBuilder: (int index) => ScaledTile.count(1, index.isEven ? 2 : 1),
          header: Row(
            children: <Widget>[
              RaisedButton(
                child: Text("sort"),
                onPressed: () {
                  _searchBarController.sortList((Post a, Post b) {
                    return a.body.compareTo(b.body);
                  });
                },
              ),
              RaisedButton(
                child: Text("Desort"),
                onPressed: () {
                  _searchBarController.removeSort();
                },
              ),
              RaisedButton(
                child: Text("Replay"),
                onPressed: () {
                  isReplay = !isReplay;
                  _searchBarController.replayLastSearch();
                },
              ),
            ],
          ),
          onCancelled: () {
            print("Cancelled triggered");
          },
          mainAxisSpacing: 10,
          crossAxisSpacing: 10,
          crossAxisCount: 2,
          onItemFound: (Post post, int index) {
            return Container(
              color: Colors.lightBlue,
              child: ListTile(
                title: Text(post.title),
                isThreeLine: true,
                subtitle: Text(post.body),
                onTap: () {
                  Navigator.of(context).push(MaterialPageRoute(builder: (context) => Detail()));
                },
              ),
            );
          },
        ),
      ),
    );
  }