how to update listview in flutter
// Assuming you've extended the StatefulWidget, you must call setState
// everytime you change the state. Ex:
setState(() { propList.add('text'); });
// Quick Example
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) => MaterialApp(home: MyList());
}
class MyList extends StatefulWidget {
@override
_MyListState createState() => _MyListState();
}
class _MyListState extends State<MyList> {
List<String> propList = [];
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('My List'),
),
body: ListView.builder(
itemCount: propList.length,
scrollDirection: Axis.horizontal,
shrinkWrap: true,
itemBuilder: (context,index)=> Text(propList[index]),
),
floatingActionButton: FloatingActionButton(
onPressed: () => setState(() => propList.add('text')),
child: Icon(Icons.add),
), // This trailing comma makes auto-formatting nicer for build methods.
);
}
}