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

0 vote128 views1 answer
Dart void
Dart
13 votes134 views1 answer
Flutter column vertical direction
Dart
8 votes128 views1 answer
Listview inside column flutter
Dart
10 votes129 views1 answer
Dart string interpolation
Dart
6 votes132 views2 answers
Flutter flotingactionbutton with text
Dart
2 votes128 views2 answers
Flutter compare two list
Dart
14 votes116 views2 answers
Dart try-catch
Dart
2 votes112 views1 answer
Rounded borders for container in flutte
Dart
11 votes127 views2 answers
Flutter trigger show off keyboard
Dart
0 vote131 views1 answer
Toolbar image dart
Dart