How To Filter Or Search Listview Using Flutter Android App

import 'package:flutter/material.dart';

void main(){
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  TextEditingController _textController = TextEditingController();

  final List<String> _listViewData = [
    "Flutter",
    "Laravel",
    "php",
    "Python",
    "wordPree",
    "Mysql",
    "Oracle",
    "HTML",
    "Css",
    "Bootstrap",
  ];

  List<String> _newData = [];

  _onChanged(String value) {
    setState(() {
      _newData = _listViewData
          .where((string) => string.toLowerCase().contains(value.toLowerCase()))
          .toList();
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.orange[800],
        title: Text('ListView Filter/Search'),
      ),
      body: Column(
        children: <Widget>[
          SizedBox(height: 15.0),
          Padding(
            padding: const EdgeInsets.all(8.0),
            child: TextField(

              controller: _textController,
              decoration: InputDecoration(
                enabledBorder: OutlineInputBorder(
                  borderRadius: BorderRadius.all(Radius.circular(12.0)),
                  borderSide: BorderSide(color: Colors.black26),
                ),
                focusedBorder: OutlineInputBorder(
                  borderRadius: BorderRadius.all(Radius.circular(12.0)),
                  borderSide: BorderSide(color: Colors.grey),
                ),
                contentPadding: EdgeInsets.all(15),
                hintText: 'Enter text here',
                hintStyle: TextStyle(color: Colors.black45, fontSize: 15)
              ),
              onChanged: _onChanged,
            ),
          ),
          SizedBox(height: 20.0),
          _newData != null && _newData.length != 0
              ? Expanded(
            child: ListView(
              padding: EdgeInsets.all(10.0),
              children: _newData.map((data) {
                return ListTile(title: Text(data));
              }).toList(),
            ),
          )
              : SizedBox(),
        ],
      ),
    );
  }
}