For questions relating to Flutter's FutureBuilder class. Use this tag in combination with the general [flutter] tag. If your question applies to Flutter more generally, use the [flutter] tag only.
Questions tagged [flutter-futurebuilder]
667 questions
0
votes
2 answers
Textwidget is null when waiting data in futurebuilder
So i have a problem with the futurebuilder.
first here is my code:
FutureBuilder(
future: DBProvider.db.getAllTasks(),
builder:(BuildContext context, AsyncSnapshot snapshot) {
if…
0
votes
1 answer
instance of 'X' even after using FutureBuilder Flutter
I have a flutter app that uses the [flutter_wordpress] package to make HTTP requests to WordPress REST API v2. Everything is great except for the fact that I get ''instance of Categoryeven after using theFutureBuilder`` widget
backend
import…
Hussein Al-Mosawi
- 1,464
- 3
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- 37
0
votes
0 answers
Get Api Works in Emulator but not in Real device Flutter
════════ Exception caught by widgets library ═══════════════════════════════════════════════════════
type 'StateError' is not a subtype of type 'String'
The relevant error-causing widget was:
FutureBuilder>…
Syed Muheeb
- 11
- 1
- 4
0
votes
1 answer
why futureBuilder callback is not calling after facebook logged in data in flutter?
I am newbie in flutter so please let me know if i am wrong.In my application i have to logged in using facebook so i took a RawMaterialButton and in onPressed function in used following code
child: RawMaterialButton(
onPressed:…
Emon
- 452
- 3
- 11
- 21
0
votes
1 answer
FutureBuilder doesn't update when updating the database
I was working in a simple notes app in flutter, this is my code.
i just made this example to preview the problem
This is the home page that navigate to a create page, and uses a futureBuilder to display the data from the database
import…
0
votes
1 answer
Flutter : How to use scope Model (or any state management package) with dynamic range slider? Edited
I have an app need to use scope model as a simplest state management (may be),I have a dynamic range slider (inside loop) which received it values from database ,I want when I move any slide to use scope model for updating the value of moved slider…
SM_Berwari
- 601
- 1
- 6
- 15
0
votes
1 answer
Getting data from an API in flutter
Tring to fetch data using API
My code
class _MyAppState extends State {
Future news;
@override
void initState() {
super.initState();
news = fetchNews();
}
@override
Widget build(BuildContext context) {
// TODO:…
Mohamed Abdulhalim
- 80
- 4
0
votes
2 answers
Flutter FutureBuilder rebuilds unnecessarily when navigate between screens
My FutureBuilder rebuilds unnecessarily when navigate between screens. Each time I have to get the download URL from the Firebase Storage and this results in extremely flickering. How can I prevent that the FutureBuilder rebuilds everytime I…
Vueer
- 1,432
- 3
- 21
- 57
0
votes
1 answer
flutter future change value when inside future builder
hello I'm new to flutter and building my first app , can I change a value in future function in builder based on a value change then reset it to the way it was when app is terminated ?
Archive.dart
class _ArchiveState extends State {
…
Nada Khaled
- 149
- 2
- 9
0
votes
2 answers
Why this future function is returning empty list flutter
I am new with flutter having issues with the future functions. I had a single await function on other screen and its returning list but when I use multiple await function in a single future function it returns an empty list and executes before many…
0
votes
1 answer
I want to add images path in SharedPreferences, but don't know to do
I write a function which return List of Image and used in ListView, but I also want to make file for each and every image and stored the that file path in SharedPreferences.
import 'package:image/image.dart' as imglib;
Future>…
Aditya Agarwal
- 1
- 2
0
votes
1 answer
The method '[]' was called on null. Flutter?
My futurebuilder is occure error above anyone have any solution The relevant error-causing widget was:
FutureBuilder…
Aakib Khan
- 19
- 5
0
votes
1 answer
Flutter DropDownButton using FutureBuilder to get JSON data
I am trying to add a list of string to a DropdwonButton coming from a future, but it is not working properly, I am new to flutter.
I wrote a FutureBuilder to get data from API (Lits of countries) it works just fine but when I add data to the…
Taha teber
- 20
- 7
0
votes
1 answer
REST GET is returning invalid arguments in Future Builder
I'm using a Rest API to call a GET method to fetch some Data. I'm doing this to load a profile to view inside my flutter body. I'm trying to assign these data to String variables inside the FutureBuilder method .
In the future builder , the…
Jason Waku
- 273
- 7
- 20
0
votes
1 answer
Exception caught by widgets library 'package:flutter/src/widgets/sliver.dart': Failed assertion: line 543 pos 15: 'children != null': is not true
My all future builder occure error How can i solve…
Aakib Khan
- 19
- 5