contactly-15

  void _searchPressed() {
    setState(() {
      if (this._searchIcon.icon == Icons.search) {
        this._searchIcon = new Icon(Icons.close);
        this._appBarTitle = new TextField(
          controller: _filter,
          style: new TextStyle(color: Colors.white),
          decoration: new InputDecoration(
            prefixIcon: new Icon(Icons.search, color: Colors.white),
            fillColor: Colors.white,
            hintText: 'Search by name',
            hintStyle: TextStyle(color: Colors.white),
          ),
        );
      } else {
        this._searchIcon = new Icon(Icons.search);
        this._appBarTitle = new Text(appTitle);
        _filter.clear();
      }
    });
  }