Questions tagged [dart]
Dart is a class-based, statically(& strongly)-typed programming language for building web and mobile applications. Dart compiles to modern JavaScript to run in the browser and compiles to native code to run on mobile platforms like Android and iOS. Dart also runs on the command-line for scripting and server-side apps.
94,568
questions
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2
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22
views
How to extract from a column or row, an list of their widgets?
I have a column, is it possible to extract from it the list of children that are in this widget?
final listWidget = [];
listWidget.add(
Column(children: [
SizedBox(),
...
- 23
0
votes
1
answer
23
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Can't Install Flutter on Windows
I'm trying to install Flutter using VS code and it shows this error:
What happened:
Firstly, I had Flutter installed and worked fine. All projects build fine, and everything is going well. I tried to ...
- 91
0
votes
1
answer
20
views
How to generate methods in `PerFieldToJson` using `json_serializable`?
Minimum reproducible code:
// foo.dart
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:cloud_firestore_odm/cloud_firestore_odm.dart';
import 'package:json_annotation/...
- 27.3k
0
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0
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11
views
Flutter Web not Showing error Message Correctly
This is my Flutter app.
void main() {
Future.delayed(Duration.zero, () {
throw "boom";
});
runApp(MaterialApp(home: Scaffold(body: Center(child: Text("Hello")))));
}
...
- 19.4k
0
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13
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I am running into an `Undefined symbol` issue with dart-ffi and Go
I am trying to use ffigen to develop a library that I can use to call a go package from dart code.
My current approach is to use the basic setup that you get from running the initial ffigen
flutter ...
0
votes
0
answers
16
views
Flutter , How to form a sentence from a words that broadcasted from a websocket
Im using a websocket to make a chatbot. This is a broadcast Stream
WebSocketHelper(@Named('webSocketUrl') String url)
: channel = IOWebSocketChannel.connect(url) {
_broadcastStream = ...
- 317
0
votes
0
answers
14
views
Unable to get real-time chat updates in Pusher Flutter
I've implemented a chat functionality on an app, however, I'm finding it difficult to get real-time chat updates, as well as updating UI with new messages. My Chat gets sent to the database but no ...
0
votes
0
answers
13
views
How to compile dart programs without Error: AOT compilation failed
When I run "dart compile exe D:\projects\dt\bin\dt.dart"
it shows:
Error: AOT compilation failed
PathAccessException: Cannot open file, path = 'd:\projects\dt\bin\dt.exe' (OS Error: Access ...
0
votes
1
answer
27
views
How to upload image using dart http
I'm trying to create a photo upload feature using dart http.
when I run the code but it fails to upload.
this is my image picker
pickImage(ImageSource source) async {
final XFile? image = await ...
- 29
0
votes
1
answer
20
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Why the state is not persistent over screens of stateNotifierProvider of riverpod in flutter?
I am trying to persist the state of a form globally but what i am getting is the default value when i am navigating to another screen in the same project?
i have found similar post here [https://...
0
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0
answers
27
views
In dart does creating an isolate means using another thread?
Dart is a single-threaded language, and it offers isolates to do multi-threaded processing. I'm confused; does creating isolates mean that I'm really using another thread?
- 387
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13
views
Flutter Plugin for Android not finding the "io" import (Kolin file highlighting broken) Android Studio
I'm trying to develop a android flutter plugin. The problem im encountering is that i cant't find a way to open up the android file that provides propper highlighting. The code in Kotlin works fine ...
- 1
1
vote
2
answers
27
views
How to efficiently manage state in a large-scale Flutter application?
I’m working on a large-scale Flutter application and I’m facing challenges with state management. I’ve tried using setState, but it quickly becomes unmanageable as the app grows. I’ve also ...
- 13
0
votes
1
answer
49
views
Duplicate Notification is coming for flutter local notification when the app is in background mode. How to solve?
I have a dashboard screen where in the initState I am initializing the Firebase notification and local notification. When the app is foregrounded it's getting the local notification and getting the ...
- 11
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0
answers
18
views
When I type flutter doctor it doesn't show me any thing, SDK version solving failed
when i want to pub get it show me this error , also when i wrote flutter doctor it does not show me any thing like itis loading or some thing
Resolving dependencies...
The current Dart SDK version is ...
- 1