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.
    );
  }
}

Source: stackoverflow.com

Similar codes

19 votes130 views3 answers
Dart update
Dart
0 vote100 views1 answer
Double to animation in flutter
Dart
0 vote99 views1 answer
Flutter Rename and change appname and bundle name
Dart
5 votes131 views2 answers
Load svg in imageprovider flutter
Dart
0 vote107 views2 answers
Consumer in dart
Dart
14 votes98 views2 answers
Dart try catch
Dart
-1 vote121 views1 answer
Flutter pub upgrade and save pubspec
Dart
1 vote110 views2 answers
Flutter remove character from string
Dart
0 vote103 views1 answer
Rectangualr fab in flutter
Dart
0 vote146 views1 answer
Flutter portrate only
Dart