Not creating a List in flutter - list

Question

Here is my point: I have two pages. The first page has a textFormField and it's value I send to the second screen. In the second screen I want to create a list of what I received from the first page. But the problem is that the list is never created. It just shows the last element received.
import 'package:flutter/material.dart';
class PageTwo extends StatefulWidget {
final String descricao;
const PageTwo({Key key, this.descricao}) : super(key: key);
#override
_PageTwoState createState() => _PageTwoState();
}
class _PageTwoState extends State<PageTwo> {
final List<String> listDescricao = [];
#override
void initState() {
listDescricao.add(widget.descricao);
super.initState();
}
//List images items
Widget imgListItem() {
return ListView.builder(
itemCount: listDescricao.length,
itemBuilder: (BuildContext context, int index) {
return widget.descricao == null
? Container()
: Text(listDescricao[index]);
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
body: imgListItem(),
);
}
}
As required this is the PAGE ONE:
import 'package:flutter/material.dart';
class PageOne extends StatefulWidget {
#override
_PageOneState createState() => _PageOneState();
}
class _PageOneState extends State<PageOne> {
final GlobalKey<ScaffoldState> _scaffoldkey = new GlobalKey<ScaffoldState>();
final inputDescricaoController = TextEditingController();
//send image
doSend() async {
String descricao = inputDescricaoController.text ??= "";
Navigator.of(context).pushAndRemoveUntil(
MaterialPageRoute(
builder: (BuildContext context) => PageTwo(descricao: descricao)),
(Route<dynamic> route) => false);
}
#override
Widget build(BuildContext context) {
return Scaffold(
body: RaisedButton(
child: Column(
children: <Widget>[
TextField(
controller: inputDescricaoController,
),
Text(
'send',
),
],
),
onPressed: () async {
doSend();
},
),
);
}
}